[SCM] Packaging for Google Go branch, debian-sid, updated. debian/2011.04.27-2-5-ga31885b
Ondřej Surý
ondrej at sury.org
Tue May 3 23:48:44 UTC 2011
The following commit has been merged in the debian-sid branch:
commit 31372f089f2fa8aac6f4c0dca9c30d0c80a7e4df
Author: Ondřej Surý <ondrej at sury.org>
Date: Wed May 4 01:04:51 2011 +0200
Imported Upstream version 57
diff --git a/doc/all.css b/doc/all.css
index dd00d1a..e496388 100644
--- a/doc/all.css
+++ b/doc/all.css
@@ -139,9 +139,8 @@ h1#title {
padding: 0;
}
#content h2 {
- border-top: 1px solid #ddd;
- background: #E2E7F0;
- padding: 5px;
+ border-top: 2px solid #ddd;
+ padding: 8px 5px;
margin: 1.5em 0 0;
}
#content .subtitle {
diff --git a/doc/devel/index.html b/doc/devel/index.html
index b9b526b..ae405bf 100644
--- a/doc/devel/index.html
+++ b/doc/devel/index.html
@@ -2,7 +2,8 @@
<ul>
<li><a href="roadmap.html">Roadmap</a></li>
-<li><a href="release.html">Release History</a></li>
+<li><a href="release.html">Release history</a></li>
+<li><a href="weekly.html">Weekly snapshot history</a></li>
<li><a href="http://godashboard.appspot.com">Build and benchmark status</a></li>
</ul>
<ul>
diff --git a/doc/devel/release.html b/doc/devel/release.html
index 0b70f03..4799126 100644
--- a/doc/devel/release.html
+++ b/doc/devel/release.html
@@ -1,2935 +1,169 @@
<!-- Release History -->
-<h2 id="Releases">Release History</h2>
+<p>This page summarizes the changes between official stable releases of Go.
+Between releases we issue less stable
+<a href="http://blog.golang.org/2011/03/go-becomes-more-stable.html">weekly snapshots</a>.
+The <a href="weekly.html">weekly snapshot history</a> contains more detail,
+and the <a href="http://code.google.com/p/go/source/list">Mercurial change log</a>
+has full details.</p>
-<p>This page summarizes the changes between tagged releases of Go.
-For full details, see the <a href="http://code.google.com/p/go/source/list">Mercurial change log</a>.</p>
-
-<h3 id="2011-04-27">2011-04-27</h3>
+<p>To update to a specific release, use:</p>
<pre>
-This release includes revisions to the reflect package to make it more
-efficient, after last the weekly’s major API update. If your code uses reflect
-it may require further changes, not all of which can be made automatically by
-gofix. For the full details of the change, see
- http://codereview.appspot.com/4435042
-Also, the Typeof and NewValue functions have been renamed to TypeOf and ValueOf.
-
-Other changes:
-* 5c: make alignment rules match 5g, just like 6c matches 6g.
-* 8g, 8l: fix "set but not used" gcc error (thanks Fazlul Shahriar).
-* all-qemu.bash: remove DISABLE_NET_TESTS.
-* build: remove DISABLE_NET_TESTS.
-* builder: build multiple targets in parallel.
-* cgo: avoid "incompatible pointer type" warning (thanks Albert Strasheim).
-* codereview: add 'hg undo' command, various other fixes.
-* compress/flate: dictionary support.
-* compress/zlib: add FDICT flag in Reader/Writer (thanks Ross Light).
-* container/heap: fix circular dependency in test.
-* crypto/openpgp: better handling of keyrings.
-* crypto/rsa: support > 3 primes.
-* crypto/tls: add server-side OCSP stapling support.
-* crypto/x509: memorize chain building.
-* crypto: move certificate verification into x509.
-* dashboard: build most recent revision first.
-* doc: mention make version in install.html.
-* expvar: add Func for functions that return values that are JSON marshalable.
-* fmt: decrease recursion depth in tests to permit them to run under gccgo,
- tweak the doc for %U.
-* gc: allow complex types to be receiver types (thanks Robert Hencke),
- correct handling of unexported method names in embedded interfaces,
- explain why invalid receiver types are invalid,
- fix copy([]int, string) error message (thanks Quan Yong Zhai),
- fix 'invalid recursive type' error (thanks Lorenzo Stoakes),
- many bug fixes.
-* go spec: attempt at clarifying language for "append",
- for map types, mention indexing operations.
-* go/types: update for export data format change.
-* gob: fix handling of indirect receivers for GobDecoders,
- fix trivial bug in map marshaling,
- have errorf always prefix the message with "gob: ",
- test case for indirection to large field,
- use new Implements and AssignableTo methods in reflect,
- when decoding a string, allocate a string, not a []byte.
-* gobuilder: permit builders of the form goos-goarch-foo,
- respect MAKEFLAGS if provided (thanks Dave Cheney).
-* godoc: use "search" input type for search box (thanks Dmitry Chestnykh).
-* gofix: add support for reflect rename.
-* gofmt: add -d (diff) (thanks David Crawshaw),
- don't crash when rewriting nil interfaces in AST,
- exclude test case that doesn't compile w/o errors,
- gofmt test harness bug fix.
-* goinstall: support GOPATH; building and installing outside the Go tree,
- support building executable commands.
-* gopack: fix prefix bug,
- preserve safe flag when not adding unsafe objects to archive.
-* gotest: add timing, respect $GOARCH,
- generate gofmt-compliant code.
-* http/cgi: copy some PATH environment variables to child,
- improve Location response handling,
- pass some default environment variables.
-* http/fcgi: new package (thanks Evan Shaw).
-* http: add NewRequest helper,
- add MultipartForm, ParseMultipartForm, and FormFile to Request,
- be clear when failing to connect to a proxy,
- bug fixes and new tests,
- consume request bodies before replying,
- don't quote Set-Cookie Domain and Path (thanks Petar Maymounkov),
- fix IP confusion in TestServerTimeouts,
- handler timeout support,
- ServerConn, ClientConn: add real Close (thanks Petar Maymounkov),
- make Client redirect policy configurable,
- put a limit on POST size,
- reverse proxy handler.
-* image/jpeg: add an encoder,
- decode to a YCbCr image instead of an RGBA image.
-* ioutil: add Discard.
-* json: keep track of error offset in SyntaxError.
-* ld: defend against some broken object files,
- do not emit empty dwarf pe sections (thanks Alex Brainman),
- fix 6l -d on Mac, diagnose invalid use of -d,
- fix Plan 9 symbol table (thanks Anthony Martin),
- remove MachoLoad limit.
-* make: prevent rm provoking 'text file busy' errors (thanks Lorenzo Stoakes).
-* mime/multipart: add ReadForm for parsing multipart forms,
- limit line length to prevent abuse.
-* mime: RFC 2231 continuation / non-ASCII support,
- bunch more tests, few minor parsing fixes.
-* misc/goplay: fix Tab and Shift+Enter in Firefox (thanks Dmitry Chestnykh).
-* net: disable one more external network test,
- fix EAI_BADFLAGS error on freebsd (thanks Mikio Hara),
- fix ParseIP (thanks Quan Yong Zhai),
- fix dialgoogle_test.go (thanks Quan Yong Zhai),
- try /etc/hosts before loading DNS config (thanks Dmitry Chestnykh),
- use C library resolver on FreeBSD, Linux, OS X / amd64, 386.
-* os/user: new package to look up users.
-* os: Open with O_APPEND|O_CREATE to append on Windows (thanks Alex Brainman),
- fix race in ReadAt/WriteAt on Windows (thanks Alex Brainman),
- turn EPIPE exit into panic.
-* rc/env.bash: fix to build on windows under msys (thanks Joe Poirier).
-* reflect: allow Slice of arrays,
- fix Copy of arrays (thanks Gustavo Niemeyer),
- require package qualifiers to match during interface check,
- add Type.Implements, Type.AssignableTo, Value.CallSlice,
- make Set match Go.
-* rpc: allow the first argument of a method to be a value rather than a pointer,
- run benchmarks over HTTP as well as direct network connections.
-* run.bash: remove redundant rebuilds.
-* runtime/plan9: warning remediation for Plan 9 (thanks Lucio De Re),
-* runtime: many bug fixes,
- fix GOMAXPROCS vs garbage collection bug (thanks Dmitriy Vyukov),
- fix mkversion to output valid path separators (thanks Peter Mundy),
- more graceful out-of-memory crash,
- require package qualifiers to match during interface check,
- skip functions with no lines when building src line table,
- turn "too many EPIPE" into real SIGPIPE.
-* src/pkg: make package doc comments consistently start with "Package foo".
-* syscall: Madvise and Mprotect for Linux (thanks Albert Strasheim),
- Mlock, Munlock, Mlockall, Munlockall on Linux (thanks Albert Strasheim),
- add BPF support for darwin/386, darwin/amd64 (thanks Mikio Hara),
- correct Windows CreateProcess input parameters (thanks Alex Brainman),
- fix Ftruncate under linux/arm5 (thanks Dave Cheney),
- permit StartProcess to hide the executed program on windows (thanks Vincent Vanackere).
-* test/bench: update timings; moving to new machine.
-* time: support Irix 6 location for zoneinfo files.
-* tutorial: modernize the definition and use of Open,
- replace the forever loops with finite counts in sieve programs.
-* websocket: include *http.Request in websocket.Conn.
-* xml: Parser hook for non-UTF-8 charset converters.
+hg pull
+hg update release.r<i>NN</i>
</pre>
-<h3 id="2011-04-13">2011-04-13</h3>
-
-<pre>
-weekly.2011-04-13
-
-This weekly snapshot includes major changes to the reflect package and the
-os.Open function. Code that uses reflect or os.Open will require updating,
-which can be done mechanically using the gofix tool.
-
-The reflect package's Type and Value types have changed. Type is now an
-interface that implements all the possible type methods. Instead of a type
-switch on a reflect.Type t, switch on t.Kind(). Value is now a struct value
-that implements all the possible value methods. Instead of a type switch on a
-reflect.Value v, switch on v.Kind(). See the change for the full details:
- http://code.google.com/p/go/source/detail?r=843855f3c026
+<h2 id="r57">r57 (released 2011/05/03)</h2>
-The os package's Open function has been replaced by three functions:
- OpenFile(name, flag, perm) // same as old Open
- Open(name) // same as old Open(name, O_RDONLY, 0)
- Create(name) // same as old Open(name, O_RDWR|O_TRUNC|O_CREAT, 0666)
+<p>
+The r57 release corresponds to
+<code><a href="weekly.html#2011-04-27">weekly.2011-04-27</a></code>
+with additional bug fixes.
+This section highlights the most significant changes in this release.
+For a more detailed summary, see the
+The <a href="weekly.html#2011-04-27">weekly release notes</a>.
+For complete information, see the
+<a href="http://code.google.com/p/go/source/list?r=release-branch.r57">Mercurial change list</a>.
+</p>
-To update your code to use the new APIs, run "gofix path/to/code". Gofix can’t
+<p>The new <a href="/cmd/gofix">gofix</a> tool finds Go programs that use old APIs and rewrites them to use
+newer ones. After you update to a new Go release, gofix helps make the
+necessary changes to your programs. Gofix will handle the http, os, and syscall
+package changes described below, and we will update the program to keep up with
+future changes to the libraries.
+Gofix can’t
handle all situations perfectly, so read and test the changes it makes before
committing them.
+See <a href="http://blog.golang.org/2011/04/introducing-gofix.html">the gofix blog post</a> for more
+information.</p>
-Other changes:
-* archive/zip: add func OpenReader, type ReadCloser (thanks Dmitry Chestnykh).
-* asn1: Implement correct marshaling of length octets (thanks Luit van Drongelen).
-* big: don't crash when printing nil ints.
-* bufio: add ReadLine, to replace encoding/line.
-* build: make the build faster, quieter.
-* codereview: automatically port old diffs forward,
- drop Author: line on self-clpatch,
- recognize code URL without trailing slash.
-* crypto/block: remove deprecated package.
-* crypto/des: new package implementating DES and TDEA (thanks Yasuhiro Matsumoto).
-* crypto/ecdsa, crypto/rsa: use io.ReadFull to read from random source (thanks Dmitry Chestnykh).
-* crypto/rsa: add 3-prime support,
- add support for precomputing CRT values,
- flip the CRT code over so that it matches PKCS#1.
-* crypto/x509: expose complete DER data (thanks Mikkel Krautz).
-* doc: new "Functions" codewalk (thanks John DeNero).
-* doc/roadmap: add sections on tools, packages.
-* fmt: allow %U for unsigned integers.
-* gc: fixes and optimizations.
-* go/printer, gofmt: use blank to separate import rename from import path.
-* go/scanner: better TokenString output.
-* go/types: new Go type hierarchy implementation for AST.
-* godashboard: show packages at launchpad.net (thanks Gustavo Niemeyer).
-* gofix: add -diff, various fixes and helpers.
-* gotest: fix a bug in error handling,
- fixes for [^.]_test file pattern (thanks Peter Mundy),
- handle \r\n returned by gomake on Windows (thanks Alex Brainman).
-* gotype: use go/types GcImporter.
-* govet: make name-matching for printf etc. case-insensitive.
-* http: allow override of Content-Type for ServeFile,
- client gzip support,
- do not listen on 0.0.0.0 during test,
- flesh out server Expect handling + tests.
-* image/ycbcr: new package.
-* image: allow "?" wildcards when registering image formats.
-* io: fixes for Read with n > 0, os.EOF (thanks Robert Hencke).
-* ld: correct Plan 9 compiler warnings (thanks Lucio De Re),
- ELF header function declarations (thanks Lucio De Re),
- fix Mach-O X86_64_RELOC_SIGNED relocations (thanks Mikkel Krautz),
- fix Mach-O bss bug (thanks Mikkel Krautz),
- fix dwarf decoding of strings for struct's fieldnames (thanks Luuk van Dijk),
- fixes and optimizations (25% faster).
-* log: generalize getting and setting flags and prefix.
-* misc/cgo/life: enable build and test on Windows (thanks Alex Brainman).
-* misc/vim: add plugin with Fmt command (thanks Dmitry Chestnykh),
- update type highlighting for new reflect package.
-* net: disable multicast tests by default (thanks Dave Cheney),
- sort records returned by LookupMX (thanks Corey Thomasson).
-* openpgp: Fix improper := shadowing (thanks Gustavo Niemeyer).
-* os: rename Open to OpenFile, add new Open, Create,
- fix Readdir in Plan 9 (thanks Fazlul Shahriar).
-* os/inotify: use _test for test files, not _obj.
-* pkg/path: enable tests on Windows (thanks Alex Brainman).
-* reflect: new Type and Value API.
-* src/pkg/Makefile: trim per-directory make output except on failure.
-* syscall: Add DT_* and MADV_* constants on Linux (thanks Albert Strasheim),
- add Mmap, Munmap on Linux, FreeBSD, OS X,
- fix StartProcess in Plan 9 (thanks Fazlul Shahriar),
- fix Windows Signaled (thanks Alex Brainman).
-* test/bench: enable build and test on Windows (thanks Alex Brainman).
-</pre>
-
-<h3 id="2011-04-04">2011-04-04</h3>
-
-<pre>
-This release includes changes to the net package. Your code will require
-changes if it uses the Dial or LookupHost functions.
-
-The laddr argument has been removed from net.Dial, and the cname return value
-has been removed from net.LookupHost. The new net.LookupCNAME function can be
-used to find the canonical host for a given name. You can update your
-networking code with gofix.
-
-The gotest shell script has been replaced by a Go program, making testing
-significantly faster.
-
-Other changes:
-* asn1: extensions needed for parsing Kerberos.
-* bufio: Write and WriteString cleanup (thanks Evan Shaw).
-* bytes, strings: simplify Join (thanks Evan Shaw).
-* crypto/cipher: bad CTR IV length now triggers panic.
-* crypto/tls: extend NPN support to the client,
- added X509KeyPair function to parse a Certificate from memory.
-* crypto/x509: parse Extended Key Usage extension (thanks Mikkel Krautz).
-* debug/gosym: remove need for gotest to run preparatory commands.
-* fmt: implement precision (length of input) values for %q: %.20q.
-* go/parser: fix scoping for local type declarations (thanks Roger Peppe),
- package name must not be the blank identifier.
-* go/printer, gofmt: remove special case for multi-line raw strings.
-* gopack: add P flag to remove prefix from filename information.
-* gotest: add -test.timeout option,
- replace the shell script with the compiled program written in go,
- execute gomake properly on Windows (thanks Alex Brainman).
-* gotry: move into its own directory, separate from gotest.
-* gotype: support for more tests, added one new test.
-* http: add Transport.MaxIdleConnsPerHost,
- use upper case hex in URL escaping (thanks Matt Jones).
-* httptest: add NewTLSServer.
-* misc/kate: reorganize, remove closed() (thanks Evan Shaw).
-* misc/notepadplus: support for notepad++ (thanks Anthony Starks).
-* net: implement non-blocking connect (thanks Alexey Borzenkov).
-* os: fix MkdirAll("/thisdoesnotexist") (thanks Albert Strasheim),
- Plan 9 support (thanks Yuval Pavel Zholkover),
- add a few missing Plan 9 errors (thanks Andrey Mirtchovski),
- fix FileInfo.Name returned by Stat (thanks David Forsythe).
-* path/filepath.Glob: add an error return,
- don't drop known matches on error.
-* path/filepath: add support for Plan 9 (thanks Andrey Mirtchovski).
-* scanner: treat line comments like in Go.
-* syscall: Plan 9 support (thanks Yuval Pavel Zholkover),
- StartProcess Chroot and Credential (thanks Albert Strasheim),
- add BPF support for freebsd/386, freebsd/amd64 (thanks Mikio Hara),
- make [Raw]Syscall6 pass 6th arg on linux/386 (thanks Evan Shaw).
-</pre>
-
-<h3 id="2011-03-28">2011-03-28</h3>
-
-<pre>
-This weekly release includes improved support for testing.
-
-Memory and CPU profiling is now available via the gotest tool. Gotest will
-produce memory and CPU profiling data when invoked with the -test.memprofile
-and -test.cpuprofile flags. Run "godoc gotest" for details.
-
-We have also introduced a way for tests to run quickly when an exhaustive test
-is unnecessary. Gotest’s new -test.short flag in combination with the testing
-package’s new Short function allows you to write tests that can be run in
-normal or "short" mode; short mode is now used by all.bash to reduce
-installation time.
-The Makefiles know about the flag - you can just run "make testshort".
-
-Other changes:
-* .hgignore: Ignore all goinstalled packages (thanks Evan Shaw).
-* build: add all-qemu.bash, handful of arm fixes,
- add support for SWIG, and add two SWIG examples,
- diagnose Ubuntu's buggy copy of gold,
- handle broken awk in version.bash (thanks Dave Cheney),
- reenable clean.bash without gomake (thanks Gustavo Niemeyer).
-* cgo: fix index-out-of-bounds bug.
-* codereview: permit CLs of the form weekly.DATE
-* crypto/ecdsa: truncate hash values.
-* crypto/openpgp: add DSA signature support.
-* dashboard: remove old python/bash builder, update README.
-* doc: explain release and weekly tags in install.html.
-* exec: document dir option for Run (thanks Gustavo Niemeyer).
-* flag: document Nflag function (thanks Fazlul Shahriar).
-* gc: remove interim ... error which rejects valid code.
-* go/ast: implemented NewPackage,
- merge CaseClause and TypeCaseClause.
-* go/parser: fix memory leak by making a copy of token literals,
- resolve identifiers properly.
-* go/printer, gofmt: avoid exponential layout algorithm,
- gofmt: simplify struct formatting and respect line breaks.
-* go/scanner: to interpret line comments with Windows filenames (thanks Alex Brainman).
-* go/token: use array instead of map for token->string table.
-* gob: optimizations to reduce allocations,
- use pointers in bootstrapType so interfaces behave properly.
-* gobuilder: recognize CLs of the form weekly.DATE.
-* godefs: handle volatile.
-* godoc: add -template flag to specify custom templates,
- fix path problem for windows (thanks Yasuhiro Matsumoto).
-* gofix: httpserver - rewrite rw.SetHeader to rw.Header.Set.
-* gofmt: add profiling flag.
-* gopprof: fix bug: do not rotate 180 degrees for large scrolls,
- update list of memory allocation functions.
-* gotest: fix gofmt issue in generated _testmain.go.
-* http: add NewProxyClientConn,
- avoid crash when asked for multiple file ranges,
- don't chunk 304 responses,
- export Transport, add keep-alive support.
-* ld: return > 0 exit code on unsafe import.
-* misc/bbedit: remove closed keyword (thanks Anthony Starks).
-* misc/emacs: gofmt: don't clobber the current buffer on failure.
-* misc/vim: remove 'closed' as a builtin function.
-* net: add FileConn, FilePacketConn, FileListener (thanks Albert Strasheim),
- don't force epoll/kqueue to wake up in order to add new events,
- let OS-specific AddFD routine wake up polling thread,
- use preallocated buffer for epoll and kqueue/kevent.
-* path/filepath: add EvalSymlinks function,
- fix TestEvalSymlinks when run under symlinked GOROOT.
-* path: work for windows (thanks Yasuhiro Matsumoto).
-* rpc: increase server_test timeout (thanks Gustavo Niemeyer),
- optimizations to reduce allocations.
-* runtime: fix darwin/amd64 thread VM footprint (thanks Alexey Borzenkov),
- fix gdb support for goroutines,
- more stack split fixes,
- os-specific types and code for setitimer,
- update defs.h for freebsd-386 (thanks Devon H. O'Dell).
-* strings: Map: avoid allocation when string is unchanged.
-* syscall: GetsockoptInt (thanks Albert Strasheim),
- StartProcess fixes for windows (thanks Alex Brainman),
- permit non-blocking syscalls,
- rename from .sh to .pl, because these files are in Perl.
-* test: enable tests using v, ok := <-ch syntax (thanks Robert Hencke).
-* time: give a helpful message when we can't set the time zone for testing.
- isolate syscall reference in sys.go.
-</pre>
+<h3 id="r57.lang">Language</h3>
-<h3 id="2011-03-15">2011-03-15</h3>
+<p>
+<a href="/doc/go_spec.html#Receive_operator">Multiple assignment syntax</a> replaces the <code>closed</code> function.
+The syntax for channel
+receives allows an optional second assigned value, a boolean value
+indicating whether the channel is closed. This code:
+</p>
<pre>
-This week's release introduces a new release tagging scheme. We intend to
-continue with our weekly releases, but have renamed the existing tags from
-"release" to "weekly". The "release" tag will now be applied to one hand-picked
-stable release each month or two.
-
-The revision formerly tagged "release.2011-03-07.1" (now "weekly.2011-03-07.1")
-has been nominated our first stable release, and has been given the tag
-"release.r56". As we tag each stable release we will post an announcement to
-the new golang-announce mailing list:
- http://groups.google.com/group/golang-announce
-
-You can continue to keep your Go installation updated using "hg update
-release", but now you should only need to update once we tag a new stable
-release, which we will announce here. If you wish to stay at the leading edge,
-you should switch to the weekly tag with "hg update weekly".
-
-
-This weekly release includes significant changes to the language spec and the
-http, os, and syscall packages. Your code may need to be changed. It also
-introduces the new gofix tool.
-
-The closed function has been removed from the language. The syntax for channel
-receives has been changed to return an optional second value, a boolean value
-indicating whether the channel is closed. This code:
- v := <-ch
+ v := <-ch
if closed(ch) {
// channel is closed
}
-should now be written as:
- v, ok := <-ch
- if !ok {
- // channel is closed
- }
-
-It is now illegal to declare unused labels, just as it is illegal to declare
-unused local variables.
-
-The new gofix tool finds Go programs that use old APIs and rewrites them to use
-newer ones. After you update to a new Go release, gofix helps make the
-necessary changes to your programs. Gofix will handle the http, os, and syscall
-package changes described below, and we will update the program to keep up with
-future changes to the libraries.
-
-The Hijack and Flush methods have been removed from the http.ResponseWriter
-interface and are accessible via the new http.Hijacker and http.Flusher
-interfaces. The RemoteAddr and UsingTLS methods have been moved from
-http.ResponseWriter to http.Request.
-
-The http.ResponseWriter interface's SetHeader method has been replaced by a
-Header() method that returns the response's http.Header. Caller code needs to
-change. This code:
- rw.SetHeader("Content-Type", "text/plain")
-should now be written as:
- rw.Header().Set("Content-Type", "text/plain")
-The os and syscall packages' StartProcess functions now take their final three
-arguments as an *os.ProcAttr and *syscall.ProcAttr values, respectively. This
-code:
- os.StartProcess(bin, args, env, dir, fds)
-should now be written as:
- os.StartProcess(bin, args, &os.ProcAttr{Files: fds, Dir: dir, Env: env})
-
-The gob package will now encode and decode values of types that implement the
-gob.GobEncoder and gob.GobDecoder interfaces. This allows types with unexported
-fields to transmit self-consistent descriptions; one instance is big.Int and
-big.Rat.
-
-Other changes:
-* 5l, 6l, 8l: reduce binary size about 40% by omitting symbols for type, string, go.string.
-* 5l, 8l: output missing section symbols (thanks Anthony Martin).
-* 6l, 8l: fix gdb crash.
-* Make.cmd: also clean _test* (thanks Gustavo Niemeyer).
-* big: implemented custom Gob(En/De)coder for Int type.
-* build: remove duplicate dependency in Make.cmd (thanks Robert Hencke),
- run gotest in misc/cgo/test.
-* codereview.py: don't suggest change -d if user is not CL author (thanks Robert Hencke).
-* compress/lzw: benchmark a range of input sizes.
-* crypto/ecdsa: add package.
-* crypto/elliptic: add the N value of each curve.
-* crypto/openpgp: bug fixes and fix misnamed function.
-* crypto/tls: fix compile error (thanks Dave Cheney).
-* doc: Effective Go: some small cleanups,
- update FAQ. hello, world is now 1.1MB, down from 1.8MB,
- update codelab wiki to fix template.Execute argument order.
-* flag: visit the flags in sorted order, for nicer messages.
-* fmt: do not export EOF = -1.
-* fmt: make ScanState.Token more general (thanks Roger Peppe).
-* gc: diagnose unused labels,
- fix handling of return values named _,
- include all dependencies in export metadata,
- make unsafe.Pointer its own kind of type, instead of an equivalent to *any.
-* go/ast, go/parser: populate identifier scopes at parse time.
-* go/ast: add FileSet parameter to ast.Print and ast.Fprint.
-* go/parser: first constant in a constant declaration must have a value.
-* gob: efficiency and reliability fixes.
-* gofmt: remove -trace and -ast flags.
-* goinstall: handle $(GOOS) and $(GOARCH) in filenames,
- handle .c files with gc when cgo isn't used, and
- handle .s files with gc (thanks Gustavo Niemeyer).
-* gopack: omit time stamps, makes output deterministic.
-* gotype: commandline tool to typecheck go programs.
-* govet: handle '*' in print format strings.
-* hash: new FNV-1a implementation (thanks Pascal S. de Kloe).
-* http/cgi: child support (e.g. Go CGI under Apache).
-* http: adapt Cookie code to follow IETF draft (thanks Petar Maymounkov),
- add test for fixed HTTP/1.0 keep-alive issue,
- don't hit external network in client_test.go,
- fix transport crash when request URL is nil,
- rename interface Transport to RoundTripper,
- run tests even with DISABLE_NET_TESTS=1.
-* httptest: default the Recorder status code to 200 on a Write.
-* io/ioutil: clean-up of ReadAll and ReadFile.
-* ioutil: add NopCloser.
-* ld: preserve symbol sizes during data layout.
-* lib9, libmach: Change GOOS references to GOHOSTOS (thanks Evan Shaw).
-* libmach: correct string comparison to revive 6cov on darwin (thanks Dave Cheney).
-* misc/vim: Add indent script for Vim (thanks Ross Light).
-* net, os, syslog: fixes for Solaris support.
-* net: don't loop to drain wakeup pipe.
-* nm: document -S flag.
-* openpgp: add PublicKey KeyId string accessors.
-* rpc: optimizations, add benchmarks and memory profiling,
- use httptest.Server for tests (thanks Robert Hencke).
-* runtime: reduce lock contention via wakeup on scheduler unlock,
- scheduler, cgo reorganization,
- split non-debugging malloc interface out of debug.go into mem.go.
-* spec: clarify return statement rules.
-* strings: add IndexRune tests, ASCII fast path,
- better benchmark names; add BenchmarkIndex.
-* syscall: implement Mount and Unmount for linux,
- implement Reboot for linux.
-* time: fix Time.ZoneOffset documentation (thanks Peter Mundy).
-* tls: move PeerCertificates to ConnectionState.
-</pre>
-
-<h3 id="2011-03-07">2011-03-07 (r56)</h3>
-
-<pre>
-This release includes changes to the reflect and path packages.
-Code that uses reflect or path may need to be updated.
-
-The reflect package's Value.Addr method has been renamed to Value.UnsafeAddr.
-Code that uses the Addr method will have to call UnsafeAddr instead.
-
-The path package has been split into two packages: path and path/filepath.
-Package path manipulates slash-separated paths, regardless of operating system.
-Package filepath implements the local operating system's native file paths.
-OS-specific functioanlity in pacakge path, such as Walk, moved to filepath.
-
-Other changes:
-* build: fixes and simplifications (thanks Dave Cheney),
- move $GOBIN ahead of /bin, /usr/bin in build $PATH.
-* bzip2: speed up decompression.
-* cgo: fix dwarf type parsing (thanks Gustavo Niemeyer),
- put temporary source files in _obj (thanks Roger Peppe),
- fix bug involving 0-argument callbacks.
-* compress/lzw: optimizations.
-* doc: add FAQ about "implements",
- add FAQ about large binaries ,
- add FAQ about stack vs heap allocation,
- add internationalization to roadmap,
- describe platform-specific conventions in code.html.
-* fmt: allow recursive calls to Fscan etc (thanks Roger Peppe),
- make %#p suppress leading 0x.
-* gc, gopack: add some missing flags to the docs.
-* gc: fix init of packages named main (thanks Gustavo Niemeyer),
-* gob: make recursive map and slice types work, and other fixes.
- tentative support for GobEncoder/GobDecoder interfaces.
-* gobuilder: add -package flag to build external packages and -v for verbose.
-* gofmt: exclude test file that is not legal Go.
-* goinstall: protect against malicious filenames (thanks Roger Peppe).
-* goyacc: provide -p flag to set prefix for names, documentation update.
-* http: add cookie support (thanks Petar Maymounkov),
- allow handlers to send non-chunked responses,
- export ParseHTTPVersion,
- expose Client's Transport,
- use WriteProxy,
- rename ClientTransport to Transport.
-* http/cgi: new package.
-* http/httptest: new package.
-* image: add a decoding test for common file formats.
-* io/ioutil: add TempDir.
-* mime/multipart: Header changed from map to MIMEHeader
-* path/filepath: new OS-specific path support (thanks Gustavo Niemeyer).
-* reflect: add PtrTo, add Value.Addr (old Addr is now UnsafeAddr).
-* runtime: use kernel-supplied compare-and-swap on linux/arm.
-* spec: minor clarification of scope rule for functions.
-* sync/atomic: new package to expose atomic operations.
-* syscall: regenerate zerrors_freebsd_amd64.go (thanks Mikio Hara),
- work around FreeBSD execve kernel bug (thanks Devon H. O'Dell).
-* template: document the delimiters.
-* testing: run GC before each benchmark run (thanks Roger Peppe).
-* unsafe: fix the documentation.
-* websocket: use httptest.Server for tests (thanks Robert Hencke).
-* xml: permit nested directives (thanks Chris Dollin).
-</pre>
-
-<h3 id="2011-02-24">2011-02-24</h3>
-
-<pre>
-This release includes changes to the http package and a small language change.
-Your code will require changes if it manipulates http Headers or omits the
-condition in if statements.
-
-The new http.Header type replaces map[string]string in the Header and Trailer
-fields of http.Request and http.Response.
-A Header value can be manipulated via its Get, Set, Add, and Del methods.
-See http://golang.org/pkg/http/#Header
-
-The condition is now mandatory in if statements.
-Previously it would default to true, as in switch and for statements.
-This code is now illegal:
- if x := foo(); {
- // code that is always executed
- }
-The same effect can be achieved like this:
- if x := foo(); true {
- // code
- }
-Or, in a simpler form:
- {
- x := foo()
- // code
- }
-
-Other changes:
-* 6l: new -Hwindowsgui flag allows to build windows gui pe (thanks Alex Brainman),
- pe fixes (thanks Wei Guangjing).
-* 8l, 6l: allow for more os threads to be created on Windows (thanks Alex Brainman),
-* build: reduce the use of subshells in recursive make, and
- remove unused NaCl conditional from make.bash (thanks Dave Cheney).
-* codereview: fix clpatch with empty diffs (thanks Gustavo Niemeyer).
-* compress/bzip2: add package.
-* compress/lzw: implement a decoder.
-* crypto/openpgp: add package.
-* crypto/rand: add read buffer to speed up small requests (thanks Albert Strasheim).
-* crypto/rsa: left-pad OAEP results when needed.
-* crypto/tls: make protocol negotiation failure fatal.
-* fmt: stop giving characters to the Scan method of Scanner when we hit a newline in Scanln.
-* gc: interface error message fixes,
- make string const comparison unsigned (thanks Jeff R. Allen).
-* go spec: minor clarification on channel types.
-* go/ast, parser: condition in if statement is mandatory.
-* gob: compute information about a user's type once.
- protect against pure recursive types.
-* godoc: accept symbolic links as path names provided to -path,
- add robots.txt, log errors when reading filter files.
-* html: tokenize HTML comments.
-* http: add proxy support (thanks Yasuhiro Matsumoto),
- implement with net/textproto (thanks Petar Maymounkov),
- send full URL in proxy requests,
- introduce start of Client and ClientTransport.
-* image/png: support for more formats (thanks Mikael Tillenius).
-* json: only use alphanumeric tags,
- use base64 to encode []byte (thanks Roger Peppe).
-* ld: detect stack overflow due to NOSPLIT, drop rpath, support weak symbols.
-* misc/dashboard/builder: talk to hg with utf-8 encoding.
-* misc/dashboard: notify golang-dev on build failure.
-* net: *netFD.Read to return os.EOF on eof under windows (thanks Alex Brainman),
- add IPv4 multicast to UDPConn (thanks Dave Cheney),
- more accurate IPv4-in-IPv6 API test (thanks Mikio Hara),
- reject invalid net:proto network names (thanks Olivier Antoine).
-* netchan: allow use of arbitrary connections (thanks Roger Peppe).
-* os: add ENODATA and ENOTCONN (thanks Albert Strasheim).
-* reflect: add a couple of sentences explaining how Methods operate,
- add a secret method to ArrayOrSliceType to ensure it's only implemented by arrays and slices,
- add pointer word to CommonType (placeholder for future work).
-* runtime-gdb.py: gdb pretty printer for go strings properly handles length.
-* runtime: various bug fixes, more complete stack traces,
- record $GOROOT_FINAL for runtime.GOROOT.
-* spec: delete incorrect mention of selector working on pointer to interface type.
-* sync: add Cond (thanks Gustavo Niemeyer).
-* syscall: add MCL_* flags for mlockall (thanks Albert Strasheim),
- implement chmod() for win32 (thanks Yasuhiro Matsumoto).
-* test/bench: update timings for new GC.
-* testing: rename cmdline flags to avoid conflicts (thanks Gustavo Niemeyer).
-* textproto: introduce Header type (thanks Petar Maymounkov).
-* websocket: use new interface to access Header.
-</pre>
-
-<h3 id="2011-02-15">2011-02-15</h3>
-
-<pre>
-This release includes changes to the io, os, and template packages.
-You may need to update your code.
-
-The io.ReadByter and io.ReadRuner interface types have been renamed to
-io.ByteReader and io.RuneReader respectively.
-
-The os package's ForkExec function has been superseded by the new StartProcess
-function and an API built around the Process type:
- http://golang.org/pkg/os/#Process
-
-The order of arguments to template.Execute has been reversed to be consistent
-the notion of "destination first", as with io.Copy, fmt.Fprint, and others.
-
-Gotest now works for package main in directories using Make.cmd-based makefiles.
-
-The memory allocation runtime problems from the last release are not completely
-fixed. The virtual memory exhaustion problems encountered by people using
-ulimit -v have been fixed, but there remain known garbage collector problems
-when using GOMAXPROCS > 1.
-
-Other changes:
-* 5l: stopped generating 64-bit eor.
-* 8l: more work on plan9 support (thanks Yuval Pavel Zholkover).
-* archive/zip: handle files with data descriptors.
-* arm: working peep-hole optimizer.
-* asn1: marshal true as 255, not 1.
-* buffer.go: minor optimization, expanded comment.
-* build: drop syslog on DISABLE_NET_TESTS=1 (thanks Gustavo Niemeyer),
- allow clean.bash to work on fresh checkout,
- change "all tests pass" message to be more obvious,
- fix spaces in GOROOT (thanks Christopher Nielsen).
-* bytes: fix bug in buffer.ReadBytes (thanks Evan Shaw).
-* 5g: better int64 code,
- don't use MVN instruction.
-* cgo: don't run cgo when not compiling (thanks Gustavo Niemeyer),
- fix _cgo_run timestamp file order (thanks Gustavo Niemeyer),
- fix handling of signed enumerations (thanks Gustavo Niemeyer),
- os/arch dependent #cgo directives (thanks Gustavo Niemeyer),
- rename internal f to avoid conflict with possible C global named f.
-* codereview: fix hgpatch on windows (thanks Yasuhiro Matsumoto),
- record repository, base revision,
- use cmd.communicate (thanks Yasuhiro Matsumoto).
-* container/ring: replace Iter() with Do().
-* crypto/cipher: add resync open to OCFB mode.
-* crypto/openpgp/armor: bug fixes.
-* crypto/openpgp/packet: new subpackage.
-* crypto/tls: load a chain of certificates from a file,
- select best cipher suite, not worst.
-* crypto/x509: add support for name constraints.
-* debug/pe: ImportedSymbols fixes (thanks Wei Guangjing).
-* doc/code: update to reflect that package names need not be unique.
-* doc/codelab/wiki: a bunch of fixes (thanks Andrey Mirtchovski).
-* doc/install: update for new versions of Mercurial.
-* encoding/line: fix line returned after EOF.
-* flag: allow hexadecimal (0xFF) and octal (0377) input for integer flags.
-* fmt.Scan: scan binary-exponent floating format, 2.4p-3,
- hexadecimal (0xFF) and octal (0377) integers.
-* fmt: document %%; also %b for floating point.
-* gc, ld: detect stale or incompatible object files,
- package name main no longer reserved.
-* gc: correct receiver in method missing error (thanks Lorenzo Stoakes),
- correct rounding of denormal constants (thanks Eoghan Sherry),
- select receive bug fix.
-* go/printer, gofmt: smarter handling of multi-line raw strings.
-* go/printer: line comments must always end in a newline,
- remove notion of "Styler", remove HTML mode.
-* gob: allow Decode(nil) and have it just discard the next value.
-* godoc: use IsAbs to test for absolute paths (fix for win32) (thanks Yasuhiro Matsumoto),
- don't hide package lookup error if there's no command with the same name.
-* gotest: enable unit tests for main programs.
-* http: add Server type supporting timeouts,
- add pipelining to ClientConn, ServerConn (thanks Petar Maymounkov),
- handle unchunked, un-lengthed HTTP/1.1 responses.
-* io: add RuneReader.
-* json: correct Marshal documentation.
-* netchan: graceful handling of closed connection (thanks Graham Miller).
-* os: implement new Process API (thanks Alex Brainman).
-* regexp tests: make some benchmarks more meaningful.
-* regexp: add support for matching against text read from RuneReader interface.
-* rpc: make more tolerant of errors, properly discard values (thanks Roger Peppe).
-* runtime: detect failed thread creation on Windows,
- faster allocator, garbage collector,
- fix virtual memory exhaustion,
- implemented windows console ctrl handler (SIGINT) (thanks Hector Chu),
- more detailed panic traces, line number work,
- improved Windows callback handling (thanks Hector Chu).
-* spec: adjust notion of Assignability,
- allow import of packages named main,
- clarification re: method sets of newly declared pointer types,
- fix a few typos (thanks Anthony Martin),
- fix Typeof() return type (thanks Gustavo Niemeyer),
- move to Unicode 6.0.
-* sync: diagnose Unlock of unlocked Mutex,
- new Waitgroup type (thanks Gustavo Niemeyer).
-* syscall: add SetsockoptIpMreq (thanks Dave Cheney),
- add sockaddr_dl, sysctl with routing message support for darwin, freebsd (thanks Mikio Hara),
- do not use NULL for zero-length read, write,
- implement windows version of Fsync (thanks Alex Brainman),
- make ForkExec acquire the ForkLock under windows (thanks Hector Chu),
- make windows API return errno instead of bool (thanks Alex Brainman),
- remove obsolete socket IO control (thanks Mikio Hara).
-* template: add simple formatter chaining (thanks Kyle Consalus),
- allow a leading '*' to indirect through a pointer.
-* testing: include elapsed time in test output
-* windows: replace remaining __MINGW32__ instances with _WIN32 (thanks Joe Poirier).
-</pre>
-
-<h3 id="2011-02-01">2011-02-01</h3>
-
-<pre>
-This release includes significant changes to channel operations and minor
-changes to the log package. Your code will require modification if it uses
-channels in non-blocking communications or the log package's Exit functions.
-
-Non-blocking channel operations have been removed from the language.
-The equivalent operations have always been possible using a select statement
-with a default clause. If a default clause is present in a select, that clause
-will execute (only) if no other is ready, which allows one to avoid blocking on
-a communication.
-
-For example, the old non-blocking send operation,
-
- if ch <- v {
- // sent
- } else {
- // not sent
- }
-
-should be rewritten as,
-
- select {
- case ch <- v:
- // sent
- default:
- // not sent
- }
-
-Similarly, this receive,
-
- v, ok := <-ch
- if ok {
- // received
- } else {
- // not received
- }
-
-should be rewritten as,
-
- select {
- case v := <-ch:
- // received
- default:
- // not received
- }
-
-This change is a prelude to redefining the 'comma-ok' syntax for a receive.
-In a later release, a receive expression will return the received value and an
-optional boolean indicating whether the channel has been closed. These changes
-are being made in two stages to prevent this semantic change from silently
-breaking code that uses 'comma-ok' with receives.
-There are no plans to have a boolean expression form for sends.
-
-Sends to a closed channel will panic immediately. Previously, an unspecified
-number of sends would fail silently before causing a panic.
-
-The log package's Exit, Exitf, and Exitln functions have been renamed Fatal,
-Fatalf, and Fatalln respectively. This brings them in line with the naming of
-the testing package.
-
-The port to the "tiny" operating system has been removed. It is unmaintained
-and untested. It was a toy to show that Go can run on raw hardware and it
-served its purpose. The source code will of course remain in the repository
-history, so it could be brought back if needed later.
-
-This release also changes some of the internal structure of the memory
-allocator in preparation for other garbage collector changes.
-If you run into problems, please let us know.
-There is one known issue that we are aware of but have not debugged yet:
- http://code.google.com/p/go/issues/detail?id=1464&.
-
-Other changes in this release:
-* 5l: document -F, force it on old ARMs (software floating point emulation)
-* 6g: fix registerization of temporaries (thanks Eoghan Sherry),
- fix uint64(uintptr(unsafe.Pointer(&x))).
-* 6l: Relocate CMOV* instructions (thanks Gustavo Niemeyer),
- windows/amd64 port (thanks Wei Guangjing).
-* 8l: add PE dynexport, emit DWARF in Windows PE, and
- code generation fixes (thanks Wei Guangjing).
-* bufio: make Flush a no-op when the buffer is empty.
-* bytes: Add Buffer.ReadBytes, Buffer.ReadString (thanks Evan Shaw).
-* cc: mode to generate go-code for types and variables.
-* cgo: define CGO_CFLAGS and CGO_LDFLAGS in Go files (thanks Gustavo Niemeyer),
- windows/386 port (thanks Wei Guangjing).
-* codereview: fix windows (thanks Hector Chu),
- handle file patterns better,
- more ASCII vs. Unicode nonsense.
-* crypto/dsa: add support for DSA.
-* crypto/openpgp: add s2k.
-* crypto/rand: use defer to unlock mutex (thanks Anschel Schaffer-Cohen).
-* crypto/rsa: correct docstring for SignPKCS1v15.
-* crypto: add package, a common place to store identifiers for hash functions.
-* doc/codelab/wiki: update to work with template changes, add to run.bash.
-* doc/spec: clarify address operators.
-* ebnflint: exit with non-zero status on error.
-* encoding/base32: new package (thanks Miek Gieben).
-* encoding/line: make it an io.Reader too.
-* exec: use custom error for LookPath (thanks Gustavo Niemeyer).
-* fmt/doc: define width and precision for strings.
-* gc: clearer error for struct == struct,
- fix send precedence,
- handle invalid name in type switch,
- special case code for single-op blocking and non-blocking selects.
-* go/scanner: fix build (adjust scanner EOF linecount).
-* gob: better debugging, commentary,
- make nested interfaces work,
- report an error when encoding a non-empty struct with no public fields.
-* godoc: full text index for whitelisted non-Go files,
- show line numbers for non-go files (bug fix).
-* gofmt -r: match(...) arguments may be nil; add missing guards.
-* govet: add Panic to the list of functions.
-* http: add host patterns (thanks Jose Luis Vázquez González),
- follow relative redirect in Get.
-* json: handle capital floating point exponent (1E100) (thanks Pieter Droogendijk).
-* ld: add -I option to set ELF interpreter,
- more robust decoding of reflection type info in generating dwarf.
-* lib9: update to Unicode 6.0.0.
-* make.bash: stricter selinux test (don't complain unless it is enabled).
-* misc/vim: Import/Drop commands (thanks Gustavo Niemeyer),
- set 'syntax sync' to a large value (thanks Yasuhiro Matsumoto).
-* net: fix race condition in test,
- return cname in LookupHost.
-* netchan: avoid race condition in test,
- fixed documentation for import (thanks Anschel Schaffer-Cohen).
-* os: add ETIMEDOUT (thanks Albert Strasheim).
-* runtime: generate Go defs for C types,
- implementation of callback functions for windows (thanks Alex Brainman),
- make Walk web browser example work (thanks Hector Chu),
- make select fairer,
- prefer fixed stack allocator over general memory allocator,
- simpler heap map, memory allocation.
-* scanner: fix Position returned by Scan, Pos,
- don't read ahead in Init.
-* suffixarray: use binary search for both ends of Lookup (thanks Eric Eisner).
-* syscall: add missing network interface constants (thanks Mikio Hara).
-* template: treat map keys as zero, not non-existent (thanks Roger Peppe).
-* time: allow cancelling of After events (thanks Roger Peppe),
- support Solaris zoneinfo directory.
-* token/position: added SetLinesForContent.
-* unicode: update to unicode 6.0.0.
-* unsafe: add missing case to doc for Pointer.
-</pre>
-
-<h3 id="2011-01-20">2011-01-20</h3>
-
-<pre>
-This release removes the float and complex types from the language.
-
-The default type for a floating point literal is now float64, and
-the default type for a complex literal is now complex128.
-
-Existing code that uses float or complex must be rewritten to
-use explicitly sized types.
-
-The two-argument constructor cmplx is now spelled complex.
-</pre>
-
-<h3 id="2011-01-19">2011-01-19</h3>
-
-<pre>
-The 5g (ARM) compiler now has registerization enabled. If you discover it
-causes bugs, use 5g -N to disable the registerizer and please let us know.
-
-The xml package now allows the extraction of nested XML tags by specifying
-struct tags of the form "parent>child". See the XML documentation for an
-example: http://golang.org/pkg/xml/
-
-* 5a, 5l, 6a, 6l, 8a, 8l: handle out of memory, large allocations (thanks Jeff R. Allen).
-* 8l: pe changes (thanks Alex Brainman).
-* arm: fixes and improvements.
-* cc: fix vlong condition.
-* cgo: add complex float, complex double (thanks Sebastien Binet),
- in _cgo_main.c define all provided symbols as functions.
-* codereview: don't mail change lists with no files (thanks Ryan Hitchman).
-* crypto/cipher: add OFB mode.
-* expvar: add Float.
-* fmt: document %X of string, []byte.
-* gc, runtime: make range on channel safe for multiple goroutines.
-* gc: fix typed constant declarations (thanks Anthony Martin).
-* go spec: adjust language for constant typing.
-* go/scanner: Make Init take a *token.File instead of a *token.FileSet.
-* godoc: bring back "indexing in progress" message,
- don't double HTML-escape search result snippets,
- enable qualified identifiers ("math.Sin") as query strings again,
- peephole optimization for generated HTML,
- remove tab before formatted section.
-* gofmt, go/printer: do not insert extra line breaks where they may break the code.
-* http: fix Content-Range and Content-Length in response (thanks Clement Skau),
- fix scheme-relative URL parsing; add ParseRequestURL,
- handle HEAD requests correctly,
- support for relative URLs.
-* math: handle denormalized numbers in Frexp, Ilogb, Ldexp, and Logb (thanks Eoghan Sherry).
-* net, syscall: return source address in Recvmsg (thanks Albert Strasheim).
-* net: add LookupAddr (thanks Kyle Lemons),
- add unixpacket (thanks Albert Strasheim),
- avoid nil dereference if /etc/services can't be opened (thanks Corey Thomasson),
- implement windows timeout (thanks Wei Guangjing).
-* netchan: do not block sends; implement flow control (thanks Roger Peppe).
-* regexp: reject bare '?'. (thanks Ben Lynn)
-* runtime/cgo: don't define crosscall2 in dummy _cgo_main.c.
-* runtime/debug: new package for printing stack traces from a running goroutine.
-* runtime: add per-pause gc stats,
- fix arm reflect.call boundary case,
- print signal information during panic.
-* spec: specify that int and uint have the same size.
-* syscall: correct WSTOPPED on OS X,
- correct length of GNU/Linux abstract Unix domain sockaddr,
- correct length of SockaddrUnix.
-* tutorial: make stdin, stdout, stderr work on Windows.
-* windows: implement exception handling (thanks Hector Chu).
-</pre>
-
-<h3 id="2011-01-12">2011-01-12</h3>
-
-<pre>
-The json, gob, and template packages have changed, and code that uses them
-may need to be updated after this release. They will no longer read or write
-unexported struct fields. When marshalling a struct with json or gob the
-unexported fields will be silently ignored. Attempting to unmarshal json or
-gob data into an unexported field will generate an error. Accessing an
-unexported field from a template will cause the Execute function to return
-an error.
-
-Godoc now supports regular expression full text search, and this
-functionality is now available on golang.org.
-
-Other changes:
-* arm: initial cut at arm optimizer.
-* bytes.Buffer: Fix bug in UnreadByte.
-* cgo: export unsafe.Pointer as void*, fix enum const conflict,
- output alignment fix (thanks Gustavo Niemeyer).
-* crypto/block: mark as deprecated.
-* crypto/openpgp: add error and armor.
-* crypto: add twofish package (thanks Berengar Lehr).
-* doc/spec: remove Maxalign from spec.
-* encoding/line: new package for reading lines from an io.Reader.
-* go/ast: correct end position for Index and TypeAssert expressions.
-* gob: make (en|dec)code(Ui|I)nt methods rather than functions.
-* godefs: better handling of enums.
-* gofmt: don't attempt certain illegal rewrites,
- rewriter matches apply to expressions only.
-* goinstall: preliminary support for cgo packages (thanks Gustavo Niemeyer).
-* hg: add cgo/_cgo_* to .hgignore.
-* http: fix text displayed in Redirect.
-* ld: fix exported dynamic symbols on Mach-O,
- permit a Mach-O symbol to be exported in the dynamic symbol table.
-* log: add methods for exit and panic.
-* net: use closesocket api instead of CloseHandle on Windows (thanks Alex Brainman).
-* netchan: make fields exported for gob change.
-* os: add Sync to *File, wraps syscall.Fsync.
-* runtime/cgo: Add callbacks to support SWIG.
-* runtime: Restore scheduler stack position if cgo callback panics.
-* suffixarray: faster creation algorithm (thanks Eric Eisner).
-* syscall: fix mksysnum_linux.sh (thanks Anthony Martin).
-* time.NewTicker: panic for intervals <= 0.
-* time: add AfterFunc to call a function after a duration (thanks Roger Peppe),
- fix tick accuracy when using multiple Tickers (thanks Eoghan Sherry).</pre>
-
-<h3 id="2011-01-06">2011-01-06</h3>
-
-<pre>
-This release includes several fixes and changes:
-
-* build: Make.pkg: use installed runtime.h for cgo.
-* cgo: disallow use of C.errno.
-* crypto/cipher: fix OCFB,
- make NewCBCEncrypter return BlockMode.
-* doc: 6l: fix documentation of -L flag,
- add golanguage.ru to foreign-language doc list,
- effective go: explain the effect of repanicking better,
- update Effective Go for template API change,
- update contribution guidelines to prefix the change description.
-* encoding/binary: reject types with implementation-dependent sizes (thanks Patrick Gavlin).
-* exp/evalsimple fix handling of slices like s[:2] (thanks Sebastien Binet).
-* fmt: made format string handling more efficient,
- normalize processing of format string.
-* gc: return constant floats for parts of complex constants (thanks Anthony Martin),
- rewrite complex /= to l = l / r (thanks Patrick Gavlin),
- fix &^=.
-* go/ast: provide complete node text range info.
-* gob: generate a better error message in one confusing place.
-* godoc: fix godoc -src (thanks Icarus Sparry).
-* goinstall: add -clean flag (thanks Kyle Lemons),
- add checkout concept (thanks Caine Tighe),
- fix -u for bzr (thanks Gustavo Niemeyer).
-* http: permit empty Reason-Phrase in response Status-Line.
-* io: fix Copyn EOF handling.
-* net: fix close of Listener (thanks Michael Hoisie).
-* regexp: fix performance bug, make anchored searches fail fast,
- fix prefix bug.
-* runtime/cgo: fix stackguard on FreeBSD/amd64 (thanks Anthony Martin).
-* strconv: atof: added 'E' as valid token for exponent (thanks Stefan Nilsson),
- update ftoa comment for 'E' and 'G'.
-* strings: fix description of FieldsFunc (thanks Roger Peppe).
-* syscall: correct Linux Splice definition,
- make Access second argument consistently uint32.
-</pre>
-
-<h3 id="2010-12-22">2010-12-22</h3>
-
-<pre>
-A small release this week. The most significant change is that some
-outstanding cgo issues were resolved.
-
-* cgo: handle references to symbols in shared libraries.
-* crypto/elliptic: add serialisation and key pair generation.
-* crypto/hmac: add HMAC-SHA256 (thanks Anthony Martin).
-* crypto/tls: add ECDHE support ("Elliptic Curve Diffie Hellman Ephemeral"),
- add support code for generating handshake scripts for testing.
-* darwin, freebsd: ignore write failure (during print, panic).
-* exp/draw: remove Border function.
-* expvar: quote StringFunc output, same as String output.
-* hash/crc64: fix typo in Sum.
-* ld: allow relocations pointing at ELF .bss symbols, ignore stab symbols.
-* misc/cgo/life: fix, add to build.
-* regexp: add HasMeta, HasOperator, and String methods to Regexp.
-* suffixarray: implemented FindAllIndex regexp search.
-* test/bench: update numbers for regex-dna after speedup to regexp.
-* time: explain the formats a little better.
</pre>
-<h3 id="2010-12-15">2010-12-15</h3>
+<p>should now be written as:</p>
<pre>
-Package crypto/cipher has been started, to replace crypto/block.
-As part of the changes, rc4.Cipher's XORKeyStream method signature has changed from
- XORKeyStream(buf []byte)
-to
- XORKeyStream(dst, src []byte)
-to implement the cipher.Stream interface. If you use crypto/block, you'll need
-to switch to crypto/cipher once it is complete.
-
-Package smtp's StartTLS now takes a *tls.Config argument.
-
-Package reflect's ArrayCopy has been renamed to Copy. There are new functions
-Append and AppendSlice.
-
-The print/println bootstrapping functions now write to standard error.
-To write to standard output, use fmt.Print[ln].
-
-A new tool, govet, has been added to the Go distribution. Govet is a static
-checker for Go programs. At the moment, and for the forseeable future,
-it only checks arguments to print calls.
-
-The cgo tool for writing Go bindings for C code has changed so that it no
-longer uses stub .so files (like cgo_stdio.so). Cgo-based packages using the
-standard Makefiles should build without any changes. Any alternate build
-mechanisms will need to be updated.
-
-The C and Go compilers (6g, 6c, 8g, 8c, 5g, 5c) now align structs according to
-the maximum alignment of the fields they contain; previously they aligned
-structs to word boundaries. This may break non-cgo-based code that attempts to
-mix C and Go.
-
-NaCl support has been removed. The recent linker changes broke NaCl support
-a month ago, and there are no known users of it.
-If necessary, the NaCl code can be recovered from the repository history.
-
-* 5g/8g, 8l, ld, prof: fix output of 32-bit values (thanks Eoghan Sherry).
-* [68]l and runtime: GDB support for interfaces and goroutines.
-* 6l, 8l: support for linking ELF and Mach-O .o files.
-* all: simplify two-variable ranges with unused second variable (thanks Ryan Hitchman).
-* arm: updated soft float support.
-* codereview: keep quiet when not in use (thanks Eoghan Sherry).
-* compress/flate: implement Flush, equivalent to zlib's Z_SYNC_FLUSH.
-* crypto/tls: use rand.Reader in cert generation example (thanks Anthony Martin).
-* dashboard: fix project tag filter.
-* debug/elf, debug/macho: add ImportedLibraries, ImportedSymbols.
-* doc/go_mem: goroutine exit is not special.
-* event.go: another print glitch from gocheck.
-* gc: bug fixes,
- syntax error for incomplete chan type (thanks Ryan Hitchman).
-* go/ast: fix ast.Walk.
-* gob: document the byte count used in the encoding of values,
- fix bug sending zero-length top-level slices and maps,
- Register should use the original type, not the indirected one.
-* godashboard: support submitting projects with non-ascii names (thanks Ryan Hitchman)
-* godefs: guard against structs with pad fields
-* godoc: added textual search, to enable use -fulltext flag.
-* gofmt: simplify "x, _ = range y" to "x = range y".
-* gopack: allow ELF/Mach-O objects in .a files without clearing allobj.
-* go/token,scanner: fix comments so godoc aligns properly.
-* govet: on error continue to the next file (thanks Christopher Wedgwood).
-* html: improved parsing.
-* http: ServeFile handles Range header for partial requests.
-* json: check for invalid UTF-8.
-* ld: allow .o files with no symbols,
- reading of ELF object files,
- reading of Mach-O object files.
-* math: change float64 bias constant from 1022 to 1023 (thanks Eoghan Sherry),
- rename the MinFloat constant to SmallestNonzeroFloat.
-* nm: silently ignore .o files in .a files.
-* os: fix test of RemoveAll.
-* os/inotify: new package (thanks Balazs Lecz).
-* os: make MkdirAll work with symlinks (thanks Ryan Hitchman).
-* regexp: speed up by about 30%; also simplify code for brackets.
-* runtime/linux/386: set FPU to 64-bit precision.
-* runtime: remove paranoid mapping at 0.
-* suffixarray: add Bytes function.
-* syscall: add network interface constants for linux/386, linux/amd64 (thanks Mikio Hara).
-* syscall/windows: restrict access rights param of OpenProcess(),
- remove \r and \n from error messages (thanks Alex Brainman).
-* test/bench: fixes to timing.sh (thanks Anthony Martin).
-* time: fix bug in Ticker: shutdown using channel rather than memory.
-* token/position: provide FileSet.File, provide files iterator.
-* xml: disallow invalid Unicode code points (thanks Nigel Kerr).
-</pre>
-
-<h3 id="2010-12-08">2010-12-08</h3>
-
-<pre>
-This release includes some package changes. If you use the crypto/tls or
-go/parser packages your code may require changes.
-
-The crypto/tls package's Dial function now takes an additional *Config
-argument. Most uses will pass nil to get the same default behavior as before.
-See the documentation for details:
- http://golang.org/pkg/crypto/tls/#Config
- http://golang.org/pkg/crypto/tls/#Dial
-
-The go/parser package's ParseFile function now takes a *token.FileSet as its
-first argument. This is a pointer to a data structure used to store
-position information. If you don't care about position information you
-can pass "token.NewFileSet()". See the documentation for details:
- http://golang.org/pkg/go/parser/#ParseFile
-
-This release also splits the patent grant text out of the LICENSE file into a
-separate PATENTS file and changes it to be more like the WebM grant.
-These clarifications were made at the request of the Fedora project.
-
-Other changes:
-* [68]l: generate debug info for builtin structured types, prettyprinting in gdb.
-* 8l: add dynimport to import table in Windows PE (thanks Wei Guangjing).
-* 8l, runtime: fix Plan 9 386 build (thanks Yuval Pavel Zholkover).
-* all: fix broken calls to Printf etc.
-* bufio: make Reader.Read implement io.Reader semantics (thanks Roger Peppe).
-* build: allow archiver to be specified by HOST_AR (thanks Albert Strasheim).
-* bytes: add Buffer.UnreadRune, Buffer.UnreadByte (thanks Roger Peppe).
-* crypto/tls: fix build of certificate generation example (thanks Christian Himpel).
-* doc/install: describe GOHOSTOS and GOHOSTARCH.
-* errchk: accept multiple source files (thanks Eoghan Sherry).
-* exec.LookPath: return os.PathError instad of os.ENOENT (thanks Michael Hoisie)..
-* flag: fix format error in boolean error report,
- handle multiple calls to flag.Parse.
-* fmt: add %U format for standard Unicode representation of code point values.
-* gc: fix method offsets of anonymous interfaces (thanks Eoghan Sherry),
- skip undefined symbols in import . (thanks Eoghan Sherry).
-* go/scanner: remove Tokenize - was only used in tests
-* gobuilder: add buildroot command-line flag (thanks Devon H. O'Dell).
-* html: unescape numeric entities (thanks Ryan Hitchman).
-* http: Add EncodeQuery, helper for constructing query strings.
-* ld: fix dwarf decoding of 64-bit reflect values (thanks Eoghan Sherry).
-* math: improve accuracy of Exp2 (thanks Eoghan Sherry).
-* runtime: add Goroutines (thanks Keith Rarick).
-* sync: small naming fix for armv5 (thanks Dean Prichard).
-* syscall, net: Add Recvmsg and Sendmsg on Linux (thanks Albert Strasheim).
-* time: make After use fewer goroutines and host processes (thanks Roger Peppe).
-</pre>
-
-<h3 id="2010-12-02">2010-12-02</h3>
-
-<pre>
-Several package changes in this release may require you to update your code if
-you use the bytes, template, or utf8 packages. In all cases, any outdated code
-will fail to compile rather than behave erroneously.
-
-The bytes package has changed. Its Add and AddByte functions have been removed,
-as their functionality is provided by the recently-introduced built-in function
-"append". Any code that uses them will need to be changed:
-s = bytes.Add(s, b) -> s = append(s, b...)
-s = bytes.AddByte(b, c) -> s = append(s, b)
-s = bytes.Add(nil, c) -> append([]byte(nil), c)
-
-The template package has changed. Your code will need to be updated if it calls
-the HTMLFormatter or StringFormatter functions, or implements its own formatter
-functions. The function signature for formatter types has changed to:
- func(wr io.Writer, formatter string, data ...interface{})
-to allow multiple arguments to the formatter. No templates will need updating.
-See the change for examples:
- http://code.google.com/p/go/source/detail?r=2c2be793120e
-
-The template change permits the implementation of multi-word variable
-instantiation for formatters. Before one could say
- {field}
-or
- {field|formatter}
-Now one can also say
- {field1 field2 field3}
-or
- {field1 field2 field3|formatter}
-and the fields are passed as successive arguments to the formatter,
-by analogy to fmt.Print.
-
-The utf8 package has changed. The order of EncodeRune's arguments has been
-reversed to satisfy the convention of "destination first".
-Any code that uses EncodeRune will need to be updated.
-
-Other changes:
-* [68]l: correct dwarf location for globals and ranges for arrays.
-* big: fix (*Rat) SetFrac64(a, b) when b < 0 (thanks Eoghan Sherry).
-* compress/flate: fix typo in comment (thanks Mathieu Lonjaret).
-* crypto/elliptic: use a Jacobian transform for better performance.
-* doc/code.html: fix reference to "gomake build" (thanks Anschel Schaffer-Cohen).
-* doc/roadmap: update gdb status.
-* doc/spec: fixed some omissions and type errors.
-* doc: some typo fixes (thanks Peter Mundy).
-* exp/eval: build fix for parser.ParseFile API change (thanks Anschel Schaffer-Cohen).
-* fmt: Scan accepts Inf and NaN,
- allow "% X" as well as "% x".
-* go/printer: preserve newlines in func parameter lists (thanks Jamie Gennis).
-* http: consume request body before next request.
-* log: ensure writes are atomic (thanks Roger Peppe).
-* path: Windows support for Split (thanks Benny Siegert).
-* runtime: fix SysFree to really free memory on Windows (thanks Alex Brainman),
- parallel definitions in Go for all C structs.
-* sort: avoid overflow in pivot calculation,
- reduced stack depth to lg(n) in quickSort (thanks Stefan Nilsson).
-* strconv: Atof on Infs and NaNs.
-</pre>
-
-<h3 id="2010-11-23">2010-11-23</h3>
-
-<pre>
-This release includes a backwards-incompatible package change to the
-sort.Search function (introduced in the last release).
-See the change for details and examples of how you might change your code:
- http://code.google.com/p/go/source/detail?r=102866c369
-
-* build: automatically #define _64BIT in 6c.
-* cgo: print required space after parameter name in wrapper function.
-* crypto/cipher: new package to replace crypto/block (thanks Adam Langley).
-* crypto/elliptic: new package, implements elliptic curves over prime fields (thanks Adam Langley).
-* crypto/x509: policy OID support and fixes (thanks Adam Langley).
-* doc: add link to codewalks,
- fix recover() documentation (thanks Anschel Schaffer-Cohen),
- explain how to write Makefiles for commands.
-* exec: enable more tests on windows (thanks Alex Brainman).
-* gc: adjustable hash code in typecheck of composite literals
- (thanks to vskrap, Andrey Mirtchovski, and Eoghan Sherry).
-* gc: better error message for bad type in channel send (thanks Anthony Martin).
-* godoc: bug fix in relativePath,
- compute search index for all file systems under godoc's observation,
- use correct time stamp to indicate accuracy of search result.
-* index/suffixarray: use sort.Search.
-* net: add ReadFrom and WriteTo windows version (thanks Wei Guangjing).
-* reflect: remove unnecessary casts in Get methods.
-* rpc: add RegisterName to allow override of default type name.
-* runtime: free memory allocated by windows CommandLineToArgv (thanks Alex Brainman).
-* sort: simplify Search (thanks Roger Peppe).
-* strings: add LastIndexAny (thanks Benny Siegert).
-</pre>
-
-<h3 id="2010-11-10">2010-11-10</h3>
-
-<pre>
-The birthday release includes a new Search capability inside the sort package.
-It takes an unusual but very general and easy-to-use approach to searching
-arbitrary indexable sorted data. See the documentation for details:
- http://golang.org/pkg/sort/#Search
-
-The ARM port now uses the hardware floating point unit (VFP). It still has a
-few bugs, mostly around conversions between unsigned integer and floating-point
-values, but it's stabilizing.
-
-In addition, there have been many smaller fixes and updates:
-
-* 6l: generate dwarf variable names with disambiguating suffix.
-* container/list: make Remove return Value of removed element.
- makes it easier to remove first or last item.
-* crypto: add cast5 (default PGP cipher),
- switch block cipher methods to be destination first.
-* crypto/tls: use pool building for certificate checking
-* go/ast: change embedded token.Position fields to named fields
- (preparation for a different position representation)
-* net: provide public access to file descriptors (thanks Keith Rarick)
-* os: add Expand function to evaluate environment variables.
-* path: add Glob (thanks Benny Siegert)
-* runtime: memequal optimization (thanks Graham Miller)
- prefix all external symbols with "runtime·" to avoid
- conflicts linking with external C libraries.
-</pre>
-
-<h3 id="2010-11-02">2010-11-02</h3>
-
-<pre>
-This release includes a language change: the new built-in function, append.
-Append makes growing slices much simpler. See the spec for details:
- http://golang.org/doc/go_spec.html#Appending_and_copying_slices
-
-Other changes:
-* 8l: pe generation fixes (thanks Alex Brainman).
-* doc: Effective Go: append and a few words about "..." args.
-* build: fiddle with make variables.
-* codereview: fix sync and download in Python 2.7 (thanks Fazlul Shahriar).
-* debug/pe, cgo: add windows support (thanks Wei Guangjing <vcc.163 at gmail.com>).
-* go/ast: add Inspect function for easy AST inspection w/o a visitor.
-* go/printer: do not remove parens around composite literals starting with
- a type name in control clauses.
-* go/scanner: bug fixes, revisions, and more tests.
-* gob: several fixes and documentation updates.
-* godoc: bug fix (bug introduced with revision 3ee58453e961).
-* gotest: print empty benchmark list in a way that gofmt will leave alone.
-* http server: correctly respond with 304 NotModified (thanks Michael Hoisie).
-* kate: update list of builtins (thanks Evan Shaw).
-* libutf: update to Unicode 5.2.0 to match pkg/unicode (thanks Anthony Martin).
-* misc/bbedit: update list of builtins (thanks Anthony Starks).
-* misc/vim: update list of builtins.
-* mkrunetype: install a Makefile and tweak it slightly so it can be built.
-* netchan: fix locking bug.
-* pidigits: minor improvements (thanks Evan Shaw).
-* rpc: fix client deadlock bug.
-* src: use append where appropriate (often instead of vector).
-* strings: add Contains helper function (thanks Brad Fitzpatrick).
-* syscall: SIO constants for Linux (thanks Albert Strasheim),
- Stat(path) on windows (thanks Alex Brainman).
-* test/ken/convert.go: add conversion torture test.
-* testing: add Benchmark (thanks Roger Peppe).
-</pre>
-
-<h3 id="2010-10-27">2010-10-27</h3>
-
-<pre>
-*** This release changes the encoding used by package gob.
- If you store gobs on disk, see below. ***
-
-The ARM port (5g) now passes all tests. The optimizer is not yet enabled, and
-floating point arithmetic is performed entirely in software. Work is underway
-to address both of these deficiencies.
-
-The syntax for arrays, slices, and maps of composite literals has been
-simplified. Within a composite literal of array, slice, or map type, elements
-that are themselves composite literals may elide the type if it is identical to
-the outer literal's element type. For example, these expressions:
- [][]int{[]int{1, 2, 3}, []int{4, 5}}
- map[string]Point{"x": Point{1.5, -3.5}, "y": Point{0, 0}}
-can be simplified to:
- [][]int{{1, 2, 3}, {4, 5}}
- map[string]Point{"x": {1.5, -3.5}, "y": {0, 0}}
-Gofmt can make these simplifications mechanically when invoked with the
-new -s flag.
-
-The built-in copy function can now copy bytes from a string value to a []byte.
-Code like this (for []byte b and string s):
- for i := 0; i < len(s); i++ {
- b[i] = s[i]
+ v, ok := <-ch
+ if !ok {
+ // channel is closed
}
-can be rewritten as:
- copy(b, s)
-
-The gob package can now encode and decode interface values containing types
-registered ahead of time with the new Register function. These changes required
-a backwards-incompatible change to the wire format. Data written with the old
-version of the package will not be readable with the new one, and vice versa.
-(Steps were made in this change to make sure this doesn't happen again.)
-We don't know of anyone using gobs to create permanent data, but if you do this
-and need help converting, please let us know, and do not update to this release
-yet. We will help you convert your data.
-
-Other changes:
-* 5g, 6g, 8g: generate code for string index instead of calling function.
-* 5l, 6l, 8l: introduce sub-symbols.
-* 6l/8l: global and local variables and type info.
-* Make.inc: delete unnecessary -fno-inline flag to quietgcc.
-* arm: precise float64 software floating point, bug fixes.
-* big: arm assembly, faster software mulWW, divWW.
-* build: only print "You need to add foo to PATH" when needed.
-* container/list: fix Remove bug and use pointer to self as identifier.
-* doc: show page title in browser title bar,
- update roadmap.
-* encoding/binary: give LittleEndian, BigEndian specific types.
-* go/parser: consume auto-inserted semi when calling ParseExpr().
-* gobuilder: pass GOHOSTOS and GOHOSTARCH to build,
- write build and benchmarking logs to disk.
-* goinstall: display helpful message when encountering a cgo package,
- fix test for multiple package names (thanks Fazlul Shahriar).
-* gotest: generate correct gofmt-formatted _testmain.go.
-* image/png: speed up paletted encoding ~25% (thanks Brad Fitzpatrick).
-* misc: update python scripts to specify python2 as python3 is now "python".
-* net: fix comment on Dial to mention unix/unixgram.
-* rpc: expose Server type to allow multiple RPC Server instances.
-* runtime: print unknown types in panic.
-* spec: append built-in (not yet implemented).
-* src: gofmt -s -w src misc.
- update code to use copy-from-string.
-* test/bench: update numbers.
-* websocket: fix short Read.
</pre>
-<h3 id="2010-10-20">2010-10-20</h3>
-
-<pre>
-This release removes the log package's deprecated functions.
-Code that has not been updated to use the new interface will break.
-See the previous release notes for details:
- http://golang.org/doc/devel/release.html#2010-10-13
-
-Also included are major improvements to the linker. It is now faster,
-uses less memory, and more parallelizable (but not yet parallel).
-
-The nntp package has been removed from the standard library.
-Its new home is the nntp-go project at Google Code:
- http://code.google.com/p/nntp-go
-You can install it with goinstall:
- goinstall nntp-go.googlecode.com/hg/nntp
-And import it in your code like so:
- import "nntp-go.googlecode.com/hg/nntp"
-
-Other changes:
-* 6g: avoid too-large immediate constants.
-* 8l, runtime: initial support for Plan 9 (thanks Yuval Pavel Zholkover).
-* 6l, 8l: more improvements on exporting debug information (DWARF).
-* arm: code gen fixes. Most tests now pass, except for floating point code.
-* big: add random number generation (thanks Florian Uekermann).
-* gc: keep track of real actual type of identifiers,
- report that shift must be unsigned integer,
- select receive with implicit conversion.
-* goplay: fix to run under windows (thanks Yasuhiro Matsumoto).
-* http: do not close connection after sending HTTP/1.0 request.
-* netchan: add new method Hangup to terminate transmission on a channel.
-* os: change TestForkExec so it can run on windows (thanks Yasuhiro Matsumoto).
-* runtime: don't let select split stack.
-* syscall/arm: correct 64-bit system call arguments.
-</pre>
-
-<h3 id="2010-10-13">2010-10-13</h3>
-
-<pre>
-This release includes changes to the log package, the removal of exp/iterable,
-two new tools (gotry and goplay), one small language change, and many other
-changes and fixes. If you use the log or iterable packages, you need to make
-changes to your code.
-
-The log package has changed. Loggers now have only one output, and output to
-standard error by default. The names have also changed, although the old names
-are still supported. They will be deleted in the next release, though, so it
-would be good to update now if you can. For most purposes all you need to do
-is make these substitutions:
- log.Stderr -> log.Println or log.Print
- log.Stderrf -> log.Printf
- log.Crash -> log.Panicln or log.Panic
- log.Crashf -> log.Panicf
- log.Exit -> log.Exitln or log.Exit
- log.Exitf -> log.Exitf (no change)
-Calls to log.New() must drop the second argument.
-Also, custom loggers with exit or panic properties will need to be reworked.
-For full details, see the change description:
- http://code.google.com/p/go/source/detail?r=d8a3c7563d
-
-The language change is that uses of pointers to interface values no longer
-automatically dereference the pointer. A pointer to an interface value is more
-often a beginner's bug than correct code.
-
-The package exp/iterable has been removed. It was an interesting experiment,
-but it encourages writing inefficient code and has outlived its utility.
-
-The new tools:
-* gotry: an exercise in reflection and an unusual tool. Run 'gotry' for details.
-* goplay: a stand-alone version of the Go Playground. See misc/goplay.
-
-Other changes:
-* 6l: Mach-O fixes, and fix to work with OS X nm/otool (thanks Jim McGrath).
-* [568]a: correct line numbers for statements.
-* arm: code generation and runtime fixes,
- adjust recover for new reflect.call,
- enable 6 more tests after net fix.
-* big: fix panic and round correctly in Rat.FloatString (thanks Anthony Martin).
-* build: Make.cmd: remove $(OFILES) (thanks Eric Clark),
- Make.pkg: remove .so before installing new one,
- add GOHOSTOS and GOHOSTARCH environment variables.
-* crypto/tls: better error messages for certificate issues,
- make SetReadTimeout work.
-* doc: add Sydney University video,
- add The Expressiveness of Go talk.
-* exp/draw/x11: support X11 vendors other than "The X.Org Foundation".
-* expvar: add (*Int).Set (thanks Sam Thorogood).
-* fmt: add Errorf helper function,
- allow %d on []byte.
-* gc: O(1) string comparison when lengths differ,
- various bug fixes.
-* http: return the correct error if a header line is too long.
-* image: add image.Tiled type, the Go equivalent of Plan 9's repl bit.
-* ld: be less picky about bad line number info.
-* misc/cgo/life: fix for new slice rules (thanks Graham Miller).
-* net: allow _ in DNS names.
-* netchan: export before import when testing, and
- zero out request to ensure correct gob decoding. (thanks Roger Peppe).
-* os: make tests work on windows (thanks Alex Brainman).
-* runtime: bug fix: serialize mcache allocation,
- correct iteration of large map values,
- faster strequal, memequal (thanks Graham Miller),
- fix argument dump in traceback,
- fix tiny build.
-* smtp: new package (thanks Evan Shaw).
-* syscall: add sockaddr_ll support for linux/386, linux/amd64 (thanks Mikio Hara),
- add ucred structure for SCM_CREDENTIALS over UNIX sockets. (thanks Albert Strasheim).
-* syscall: implement WaitStatus and Wait4() for windows (thanks Wei Guangjing).
-* time: add After.
-* websocket: enable tests on windows (thanks Alex Brainman).
-</pre>
-
-<h3 id="2010-09-29">2010-09-29</h3>
-
-<pre>
-This release includes some minor language changes and some significant package
-changes. You may need to change your code if you use ...T parameters or the
-http package.
-
-The semantics and syntax of forwarding ...T parameters have changed.
- func message(f string, s ...interface{}) { fmt.Printf(f, s) }
-Here, s has type []interface{} and contains the parameters passed to message.
-Before this language change, the compiler recognized when a function call
-passed a ... parameter to another ... parameter of the same type, and just
-passed it as though it was a list of arguments. But this meant that you
-couldn't control whether to pass the slice as a single argument and you
-couldn't pass a regular slice as a ... parameter, which can be handy. This
-change gives you that control at the cost of a few characters in the call.
-If you want the promotion to ..., append ... to the argument:
- func message(f string, s ...interface{}) { fmt.Printf(f, s...) }
-Without the ..., s would be passed to Printf as a single argument of type
-[]interface{}. The bad news is you might need to fix up some of your code,
-but the compiler will detect the situation and warn you.
-
-Also, the http.Handler and http.HandlerFunc types have changed. Where http
-handler functions previously accepted an *http.Conn, they now take an interface
-type http.ResponseWriter. ResponseWriter implements the same methods as *Conn,
-so in most cases the only change required will be changing the type signature
-of your handler function's first parameter. See:
- http://golang.org/pkg/http/#Handler
-
-The utf8 package has a new type, String, that provides efficient indexing
-into utf8 strings by rune (previously an expensive conversion to []int
-was required). See:
- http://golang.org/pkg/utf8/#String
-
-The compiler will now automatically insert a semicolon at the end of a file if
-one is not found. This effect of this is that Go source files are no longer
-required to have a trailing newline.
-
-Other changes:
-* 6prof: more accurate usage message.
-* archive/zip: new package for reading Zip files.
-* arm: fix code generation, 10 more package tests pass.
-* asn1: make interface consistent with json.
-* bufio.UnreadRune: fix bug at EOF.
-* build: clear custom variables like GREP_OPTIONS,
- silence warnings generated by ubuntu gcc,
- use full path when compiling libraries.
-* bytes, strings: change lastIndexFunc to use DecodeLastRune (thanks Roger Peppe).
-* doc: add to and consolidate non-english doc references,
- consolidate FAQs into a single file, go_faq.html,
- updates for new http interface.
-* fmt/Printf: document and tweak error messages produced for bad formats.
-* gc: allow select case expr = <-c,
- eliminate duplicates in method table,
- fix reflect table method receiver,
- improve error message for x \= 0.
-* go/scanner: treat EOF like a newline for purposes of semicolon insertion.
-* gofmt: stability improvements.
-* gotest: leave _testmain.go for "make clean" to clean up.
-* http: correct escaping of different parts of URL,
- support HTTP/1.0 Keep-Alive.
-* json: do not write to unexported fields.
-* libcgo: don't build for NaCl,
- set g, m in thread local storage for windows 386 (thanks Wei Guangjing).
-* math: Fix off-by-one error in Ilogb and Logb. (thanks Charles L. Dorian).
-* misc/dashboard/builder: remove build files after benchmarking.
-* nacl: update instructions for new SDK.
-* net: enable v4-over-v6 on ip sockets,
- fix crash in DialIP.
-* os: check for valid arguments in windows Readdir (thanks Peter Mundy).
-* runtime: add mmap of null page just in case,
- correct stats in SysFree,
- fix unwindstack crash.
-* syscall: add IPPROTO_IPV6 and IPV6_V6ONLY const to fix nacl and windows build,
- add inotify on Linux (thanks Balazs Lecz),
- fix socketpair in syscall_bsd,
- fix windows value of IPV6_V6ONLY (thanks Alex Brainman),
- implement windows version of Utimes (thanks Alex Brainman),
- make mkall.sh work for nacl.
-* test: Add test that causes incorrect error from gccgo.
-* utf8: add DecodeLastRune and DecodeLastRuneInString (thanks Roger Peppe).
-* xml: Allow entities inside CDATA tags (thanks Dan Sinclair).
-</pre>
-
-<h3 id="2010-09-22">2010-09-22</h3>
-
-<pre>
-This release includes new package functionality, and many bug fixes and changes.
-It also improves support for the arm and nacl platforms.
-
-* 5l: avoid fixed buffers in list.
-* 6l, 8l: clean up ELF code, fix NaCl.
-* 6l/8l: emit DWARF frame info.
-* Make.inc: make GOOS detection work on windows (thanks Alex Brainman).
-* build: fixes for native arn build,
- make all.bash run on Ubuntu ARM.
-* cgo: bug fixes,
- show preamble gcc errors (thanks Eric Clark).
-* crypto/x509, crypto/tls: improve root matching and observe CA flag.
-* crypto: Fix certificate validation.
-* doc: variable-width layout.
-* env.bash: fix building in directory with spaces in the path (thanks Alex Brainman).
-* exp/4s, exp/nacl/av: sync to recent exp/draw changes.
-* exp/draw/x11: mouse location is a signed integer.
-* exp/nacl/av: update color to max out at 1<<16-1 instead of 1<<32-1.
-* fmt: support '*' for width or precision (thanks Anthony Martin).
-* gc: improvements to static initialization,
- make sure path names are canonical.
-* gob: make robust when decoding a struct with non-struct data.
-* gobuilder: add -cmd for user-specified build command,
- add -rev= flag to build specific revision and exit,
- fix bug that caused old revisions to be rebuilt.
-* godoc: change default filter file name to "",
- don't use quadratic algorithm to filter paths,
- show "Last update" info for directory listings.
-* http: new redirect test,
- URLEscape now escapes all reserved characters as per the RFC.
-* nacl: fix zero-length writes.
-* net/dict: parse response correctly (thanks Fazlul Shahriar).
-* netchan: add a cross-connect test,
- handle closing of channels,
- provide a method (Importer.Errors()) to recover protocol errors.
-* os: make Open() O_APPEND flag work on windows (thanks Alex Brainman),
- make RemoveAll() work on windows (thanks Alex Brainman).
-* pkg/Makefile: disable netchan test to fix windows build (thanks Alex Brainman).
-* regexp: delete Iter methods.
-* runtime: better panic for send to nil channel.
-* strings: fix minor bug in LastIndexFunc (thanks Roger Peppe).
-* suffixarray: a package for creating suffixarray-based indexes.
-* syscall: Use vsyscall for syscall.Gettimeofday and .Time on linux amd64.
-* test: fix NaCl build.
-* windows: fix netchan test by using 127.0.0.1.
-</pre>
-
-<h3 id="2010-09-15">2010-09-15</h3>
-
-<pre>
-This release includes a language change: the lower bound of a subslice may
-now be omitted, in which case the value will default to 0.
-For example, s[0:10] may now be written as s[:10], and s[0:] as s[:].
-
-The release also includes important bug fixes for the ARM architecture,
-as well as the following fixes and changes:
-
-* 5g: register allocation bugs
-* 6c, 8c: show line numbers in -S output
-* 6g, 6l, 8g, 8l: move read-only data to text segment
-* 6l, 8l: make etext accurate; introduce rodata, erodata.
-* arm: fix build bugs.
- make libcgo build during OS X cross-compile
- remove reference to deleted file syntax/slice.go
- use the correct stat syscalls
- work around reg allocator bug in 5g
-* bufio: add UnreadRune.
-* build: avoid bad environment interactions
- fix build for tiny
- generate, clean .exe files on Windows (thanks Joe Poirier)
- test for _WIN32, not _MINGW32 (thanks Joe Poirier)
- work with GNU Make 3.82 (thanks Jukka-Pekka Kekkonen)
-* cgo: add typedef for uintptr in generated headers
- silence warning for C call returning const pointer
-* codereview: convert email address to lower case before checking CONTRIBUTORS
-* crypto/tls: don't return an error from Close()
-* doc/tutorial: update for slice changes.
-* exec: separate LookPath implementations for unix/windows (thanks Joe Poirier)
-* exp/draw/x11: allow clean shutdown when the user closes the window.
-* exp/draw: clip destination rectangle to the image bounds.
- fast path for drawing overlapping image.RGBAs.
- fix double-counting of pt.Min for the src and mask points.
- reintroduce the MouseEvent.Nsec timestamp.
- rename Context to Window, and add a Close method.
-* exp/debug: preliminary support for 'copy' function (thanks Sebastien Binet)
-* fmt.Fscan: use UnreadRune to preserve data across calls.
-* gc: better printing of named constants, func literals in errors
- many bug fixes
- fix line number printing with //line directives
- fix symbol table generation on windows (thanks Alex Brainman)
- implement comparison rule from spec change 33abb649cb63
- implement new slice spec (thanks Scott Lawrence)
- make string x + y + z + ... + w efficient
- more accurate line numbers for ATEXT
- remove &[10]int -> []int conversion
-* go-mode.el: fix highlighting for 'chan' type (thanks Scott Lawrence)
-* godoc: better support for directory trees for user-supplied paths
- use correct delay time (bug fix)
-* gofmt, go/printer: update internal estimated position correctly
-* goinstall: warn when package name starts with http:// (thanks Scott Lawrence)
-* http: check https certificate against host name
- do not cache CanonicalHeaderKey (thanks Jukka-Pekka Kekkonen)
-* image: change a ColorImage's minimum point from (0, 0) to (-1e9, -1e9).
- introduce Intersect and Union rectangle methods.
-* ld: handle quoted spaces in package path (thanks Dan Sinclair)
-* libcgo: fix NaCl build.
-* libmach: fix build on arm host
- fix new thread race with Linux
-* math: make portable Tan(Pi/2) return NaN
-* misc/dashboard/builder: gobuilder, a continuous build client
-* net: disable tests for functions not available on windows (thanks Alex Brainman)
-* netchan: make -1 unlimited, as advertised.
-* os, exec: rename argv0 to name
-* path: add IsAbs (thanks Ivan Krasin)
-* runtime: fix bug in tracebacks
- fix crash trace on amd64
- fix windows build (thanks Alex Brainman)
- use manual stack for garbage collection
-* spec: add examples for slices with omitted index expressions.
- allow omission of low slice bound (thanks Scott Lawrence)
-* syscall: fix windows Gettimeofday (thanks Alex Brainman)
-* test(arm): disable zerodivide.go because compilation fails.
-* test(windows): disable tests that cause the build to fail (thanks Joe Poirier)
-* test/garbage/parser: sync with recent parser changes
-* test: Add test for //line
- Make gccgo believe that the variables can change.
- Recognize gccgo error messages.
- Reduce race conditions in chan/nonblock.go.
- Run garbage collector before testing malloc numbers.
-* websocket: Add support for secure WebSockets (thanks Jukka-Pekka Kekkonen)
-* windows: disable unimplemented tests (thanks Joe Poirier)
-</pre>
-
-<h3 id="2010-09-06">2010-09-06</h3>
-
-<pre>
-This release includes the syntactic modernization of more than 100 files in /test,
-and these additions, changes, and fixes:
-* 6l/8l: emit DWARF in macho.
-* 8g: use FCHS, not FMUL, for minus float.
-* 8l: emit DWARF in ELF,
- suppress emitting DWARF in Windows PE (thanks Alex Brainman).
-* big: added RatString, some simplifications.
-* build: create bin and pkg directories as needed; drop from hg,
- delete Make.386 Make.amd64 Make.arm (obsoleted by Make.inc),
- fix cgo with -j2,
- let pkg/Makefile coordinate building of Go commands,
- never use quietgcc in Make.pkg,
- remove more references to GOBIN and GOROOT (thanks Christian Himpel).
-* codereview: Fix uploading for Mercurial 1.6.3 (thanks Evan Shaw),
- consistent indent, cut dead code,
- fix hang on standard hg commands,
- print status when tasks take longer than 30 seconds,
- really disable codereview when not available,
- upload files in parallel (5x improvement on large CLs).
-* crypto/hmac: make Sum idempotent (thanks Jukka-Pekka Kekkonen).
-* doc: add links to more German docs,
- add round-robin flag to io2010 balance example,
- fix a bug in the example in Constants subsection (thanks James Fysh),
- various changes for validating HTML (thanks Scott Lawrence).
-* fmt: delete erroneous sentence about return value for Sprint*.
-* gc: appease bison version running on FreeBSD builder,
- fix spurious syntax error.
-* go/doc: use correct escaper for URL.
-* go/printer: align ImportPaths in ImportDecls (thanks Scott Lawrence).
-* go/typechecker: 2nd step towards augmenting AST with full type information.
-* gofmt: permit omission of first index in slice expression.
-* goinstall: added -a flag to mean "all remote packages" (thanks Scott Lawrence),
- assume go binaries are in path (following new convention),
- use https for Google Code checkouts.
-* gotest: allow make test of cgo packages (without make install).
-* http: add Date to server, Last-Modified and If-Modified-Since to file server,
- add PostForm function to post url-encoded key/value data,
- obscure passwords in return value of URL.String (thanks Scott Lawrence).
-* image: introduce Config type and DecodeConfig function.
-* libcgo: update Makefile to use Make.inc.
-* list: update comment to state that the zero value is ready to use.
-* math: amd64 version of Sincos (thanks Charles L. Dorian).
-* misc/bash: add *.go completion for gofmt (thanks Scott Lawrence).
-* misc/emacs: make _ a word symbol (thanks Scott Lawrence).
-* misc: add zsh completion (using compctl),
- syntax highlighting for Fraise.app (OS X) (thanks Vincent Ambo).
-* net/textproto: Handle multi-line responses (thanks Evan Shaw).
-* net: add LookupMX (thanks Corey Thomasson).
-* netchan: Fix race condition in test,
- rather than 0, make -1 mean infinite (a la strings.Split et al),
- use acknowledgements on export send.
- new methods Sync and Drain for clean teardown.
-* regexp: interpret all Go characer escapes \a \b \f \n \r \t \v.
-* rpc: fix bug that caused private methods to attempt to be registered.
-* runtime: Correct commonType.kind values to match compiler,
- add GOOS, GOARCH; fix FuncLine,
- special case copy, equal for one-word interface values (thanks Kyle Consalus).
-* scanner: fix incorrect reporting of error in Next (thanks Kyle Consalus).
-* spec: clarify that arrays must be addressable to be sliceable.
-* template: fix space handling around actions.
-* test/solitaire: an exercise in backtracking and string conversions.
-* test: Recognize gccgo error messages and other fixes.
-* time: do not crash in String on nil Time.
-* tutorial: regenerate HTML to pick up change to progs/file.go.
-* websocket: fix missing Sec-WebSocket-Protocol on server response (thanks Jukka-Pekka Kekkonen).
-</pre>
-
-<h3 id="2010-08-25">2010-08-25</h3>
-
-<pre>
-This release includes changes to the build system that will likely require you
-to make changes to your environment variables and Makefiles.
-
-All environment variables are now optional:
- - $GOOS and $GOARCH are now optional; their values should now be inferred
- automatically by the build system,
- - $GOROOT is now optional, but if you choose not to set it you must run
- 'gomake' instead of 'make' or 'gmake' when developing Go programs
- using the conventional Makefiles,
- - $GOBIN remains optional and now defaults to $GOROOT/bin;
- if you wish to use this new default, make sure it is in your $PATH
- and that you have removed the existing binaries from $HOME/bin.
-
-As a result of these changes, the Go Makefiles have changed. If your Makefiles
-inherit from the Go Makefiles, you must change this line:
- include ../../Make.$(GOARCH)
-to this:
- include ../../Make.inc
-
-This release also removes the deprecated functions in regexp and the
-once package. Any code that still uses them will break.
-See the notes from the last release for details:
- http://golang.org/doc/devel/release.html#2010-08-11
-
-Other changes:
-* 6g: better registerization for slices, strings, interface values
-* 6l: line number information in DWARF format
-* build: $GOBIN defaults to $GOROOT/bin,
- no required environment variables
-* cgo: add C.GoStringN (thanks Eric Clark).
-* codereview: fix issues with leading tabs in CL descriptions,
- do not send "Abandoned" mail if the CL has not been mailed.
-* crypto/ocsp: add missing Makefile.
-* crypto/tls: client certificate support (thanks Mikkel Krautz).
-* doc: update gccgo information for recent changes.
- fix errors in Effective Go.
-* fmt/print: give %p priority, analogous to %T,
- honor Formatter in Print, Println.
-* gc: fix parenthesization check.
-* go/ast: facility for printing AST nodes,
- first step towards augmenting AST with full type information.
-* go/printer: do not modify tabwriter.Escape'd text.
-* gofmt: do not modify multi-line string literals,
- print AST nodes by setting -ast flag.
-* http: fix typo in http.Request documentation (thanks Scott Lawrence)
- parse query string always, not just in GET
-* image/png: support 16-bit color.
-* io: ReadAtLeast now errors if min > len(buf).
-* jsonrpc: use `error: null` for success, not `error: ""`.
-* libmach: implement register fetch for 32-bit x86 kernel.
-* net: make IPv6 String method standards-compliant (thanks Mikio Hara).
-* os: FileInfo.Permission() now returns uint32 (thanks Scott Lawrence),
- implement env using native Windows API (thanks Alex Brainman).
-* reflect: allow PtrValue.PointTo(nil).
-* runtime: correct line numbers for .goc files,
- fix another stack split bug,
- fix freebsd/386 mmap.
-* syscall: regenerate syscall/z* files for linux/386, linux/amd64, linux/arm.
-* tabwriter: Introduce a new flag StripEscape.
-* template: fix handling of space around actions,
- vars preceded by white space parse correctly (thanks Roger Peppe).
-* test: add test case that crashes gccgo.
-* time: parse no longer requires minutes for time zone (thanks Jan H. Hosang)
-* yacc: fix bounds check in error recovery.
-</pre>
-
-<h3 id="2010-08-11">2010-08-11</h3>
-
-<pre>
-This release introduces some package changes. You may need to change your
-code if you use the once, regexp, image, or exp/draw packages.
-
-The type Once has been added to the sync package. The new sync.Once will
-supersede the functionality provided by the once package. We intend to remove
-the once package after this release. See:
- http://golang.org/pkg/sync/#Once
-All instances of once in the standard library have been replaced with
-sync.Once. Reviewing these changes may help you modify your existing code.
-The relevant changeset:
- http://code.google.com/p/go/source/detail?r=fa2c43595119
-
-A new set of methods has been added to the regular expression package, regexp.
-These provide a uniformly named approach to discovering the matches of an
-expression within a piece of text; see the package documentation for details:
- http://golang.org/pkg/regexp/
-These new methods will, in a later release, replace the old methods for
-matching substrings. The following methods are deprecated:
- Execute (use FindSubmatchIndex)
- ExecuteString (use FindStringSubmatchIndex)
- MatchStrings(use FindStringSubmatch)
- MatchSlices (use FindSubmatch)
- AllMatches (use FindAll; note that n<0 means 'all matches'; was n<=0)
- AllMatchesString (use FindAllString; note that n<0 means 'all matches'; was n<=0)
-(Plus there are ten new methods you didn't know you wanted.)
-Please update your code to use the new routines before the next release.
-
-An image.Image now has a Bounds rectangle, where previously it ranged
-from (0, 0) to (Width, Height). Loops that previously looked like:
- for y := 0; y < img.Height(); y++ {
- for x := 0; x < img.Width(); x++ {
- // Do something with img.At(x, y)
- }
- }
-should instead be:
- b := img.Bounds()
- for y := b.Min.Y; y < b.Max.Y; y++ {
- for x := b.Min.X; x < b.Max.X; x++ {
- // Do something with img.At(x, y)
- }
- }
-The Point and Rectangle types have also moved from exp/draw to image.
-
-Other changes:
-* arm: bugfixes and syscall (thanks Kai Backman).
-* asn1: fix incorrect encoding of signed integers (thanks Nicholas Waples).
-* big: fixes to bitwise functions (thanks Evan Shaw).
-* bytes: add IndexRune, FieldsFunc and To*Special (thanks Christian Himpel).
-* encoding/binary: add complex (thanks Roger Peppe).
-* exp/iterable: add UintArray (thanks Anschel Schaffer-Cohen).
-* godoc: report Status 404 if a pkg or file is not found.
-* gofmt: better reporting for unexpected semicolon errors.
-* html: new package, an HTML tokenizer.
-* image: change image representation from slice-of-slices to linear buffer,
- introduce Decode and RegisterFormat,
- introduce Transparent and Opaque,
- replace Width and Height by Bounds, add the Point and Rect types.
-* libbio: fix Bprint to address 6g issues with large data structures.
-* math: fix amd64 Hypot (thanks Charles L. Dorian).
-* net/textproto: new package, with example net/dict.
-* os: fix ForkExec() handling of envv == nil (thanks Alex Brainman).
-* png: grayscale support (thanks Mathieu Lonjaret).
-* regexp: document that backslashes are the escape character.
-* rpc: catch errors from ReadResponseBody.
-* runtime: memory free fix (thanks Alex Brainman).
-* template: add ParseFile method to template.Template.
-* test/peano: use directly recursive type def.
-</pre>
-
-<h3 id="2010-08-04">2010-08-04</h3>
-
-<pre>
-This release includes a change to os.Open (and co.). The file permission
-argument has been changed to a uint32. Your code may require changes - a simple
-conversion operation at most.
-
-Other changes:
-* amd64: use segment memory for thread-local storage.
-* arm: add gdb support to android launcher script,
- bugfixes (stack clobbering, indices),
- disable another flaky test,
- remove old qemu dependency from gotest.
-* bufio: introduce Peek.
-* bytes: added test case for explode with blank string (thanks Scott Lawrence).
-* cgo: correct multiple return value function invocations (thanks Christian Himpel).
-* crypto/x509: unwrap Subject Key Identifier (thanks Adam Langley).
-* gc: index bounds tests and other fixes.
-* gofmt/go/parser: strengthen syntax checks.
-* goinstall: check for error from exec.*Cmd.Wait() (thanks Alex Brainman).
-* image/png: use image-specific methods for checking opacity.
-* image: introduce Gray and Gray16 types,
- remove the named colors except for Black and White.
-* json: object members must have a value (thanks Anthony Martin).
-* misc/vim: highlight misspelled words only in comments (thanks Christian Himpel).
-* os: Null device (thanks Peter Mundy).
-* runtime: do not fall through in SIGBUS/SIGSEGV.
-* strings: fix Split("", "", -1) (thanks Scott Lawrence).
-* syscall: make go errors not clash with windows errors (thanks Alex Brainman).
-* test/run: diff old new,
-* websocket: correct challenge response (thanks Tarmigan Casebolt),
- fix bug involving spaces in header keys (thanks Bill Neubauer).
-</pre>
-
-<h3 id="2010-07-29">2010-07-29</h3>
-
-<pre>
-* 5g: more soft float support and several bugfixes.
-* asn1: Enumerated, Flag and GeneralizedTime support.
-* build: clean.bash to check that GOOS and GOARCH are set.
-* bytes: add IndexFunc and LastIndexFunc (thanks Fazlul Shahriar),
- add Title.
-* cgo: If CC is set in environment, use it rather than "gcc",
- use new command line syntax: -- separates cgo flags from gcc flags.
-* codereview: avoid crash if no config,
- don't run gofmt with an empty file list,
- make 'hg submit' work with Mercurial 1.6.
-* crypto/ocsp: add package to parse OCSP responses.
-* crypto/tls: add client-side SNI support and PeerCertificates.
-* exp/bignum: delete package - functionality subsumed by package big.
-* fmt.Print: fix bug in placement of spaces introduced when ...T went in.
-* fmt.Scanf: handle trailing spaces.
-* gc: fix smaller-than-pointer-sized receivers in interfaces,
- floating point precision/normalization fixes,
- graceful exit on seg fault,
- import dot shadowing bug,
- many fixes including better handling of invalid input,
- print error detail about failure to open import.
-* gccgo_install.html: add description of the port to RTEMS (thanks Vinu Rajashekhar).
-* gobs: fix bug in singleton arrays.
-* godoc: display synopses for all packages that have some kind of documentation..
-* gofmt: fix some linebreak issues.
-* http: add https client support (thanks Fazlul Shahriar),
- write body when content length unknown (thanks James Whitehead).
-* io: MultiReader and MultiWriter (thanks Brad Fitzpatrick),
- fix another race condition in Pipes.
-* ld: many fixes including better handling of invalid input.
-* libmach: correct handling of .5 files with D_REGREG addresses.
-* linux/386: use Xen-friendly ELF TLS instruction sequence.
-* mime: add AddExtensionType (thanks Yuusei Kuwana).
-* misc/vim: syntax file recognizes constants like 1e9 (thanks Petar Maymounkov).
-* net: TCPConn.SetNoDelay, back by popular demand.
-* net(windows): fix crashing Read/Write when passed empty slice on (thanks Alex Brainman),
- implement LookupHost/Port/SRV (thanks Wei Guangjing),
- properly handle EOF in (*netFD).Read() (thanks Alex Brainman).
-* runtime: fix bug introduced in revision 4a01b8d28570 (thanks Alex Brainman),
- rename cgo2c, *.cgo to goc2c, *.goc (thanks Peter Mundy).
-* scanner: better comment.
-* strings: add Title.
-* syscall: add ForkExec, Syscall12 on Windows (thanks Daniel Theophanes),
- improve windows errno handling (thanks Alex Brainman).
-* syscall(windows): fix FormatMessage (thanks Peter Mundy),
- implement Pipe() (thanks Wei Guangjing).
-* time: fix parsing of minutes in time zones.
-* utf16(windows): fix cyclic dependency when testing (thanks Peter Mundy).
-</pre>
-
-<h3 id="2010-07-14">2010-07-14</h3>
-
-<pre>
-This release includes a package change. In container/vector, the Iter method
-has been removed from the Vector, IntVector, and StringVector types. Also, the
-Data method has been renamed to Copy to better express its actual behavior.
-Now that Vector is just a slice, any for loops ranging over v.Iter() or
-v.Data() can be changed to range over v instead.
-
-Other changes:
-* big: Improvements to Rat.SetString (thanks Evan Shaw),
- add sign, abs, Rat.IsInt.
-* cgo: various bug fixes.
-* codereview: Fix for Mercurial >= 1.6 (thanks Evan Shaw).
-* crypto/rand: add Windows implementation (thanks Peter Mundy).
-* crypto/tls: make HTTPS servers easier,
- add client OCSP stapling support.
-* exp/eval: converted from bignum to big (thanks Evan Shaw).
-* gc: implement new len spec, range bug fix, optimization.
-* go/parser: require that '...' parameters are followed by a type.
-* http: fix ParseURL to handle //relative_path properly.
-* io: fix SectionReader Seek to seek backwards (thanks Peter Mundy).
-* json: Add HTMLEscape (thanks Micah Stetson).
-* ld: bug fixes.
-* math: amd64 version of log (thanks Charles L. Dorian).
-* mime/multipart: new package to parse multipart MIME messages
- and HTTP multipart/form-data support.
-* os: use TempFile with default TempDir for test files (thanks Peter Mundy).
-* runtime/tiny: add docs for additional VMs, fix build (thanks Markus Duft).
-* runtime: better error for send/recv on nil channel.
-* spec: clarification of channel close(),
- lock down some details about channels and select,
- restrict when len(x) is constant,
- specify len/cap for nil slices, maps, and channels.
-* windows: append .exe to binary names (thanks Joe Poirier).
-</pre>
-
-<h3 id="2010-07-01">2010-07-01</h3>
-
-<pre>
-This release includes some package changes that may require changes to
-client code.
-
-The Split function in the bytes and strings packages has been changed.
-The count argument, which limits the size of the return, previously treated
-zero as unbounded. It now treats 0 as 0, and will return an empty slice.
-To request unbounded results, use -1 (or some other negative value).
-The new Replace functions in bytes and strings share this behavior.
-This may require you change your existing code.
-
-The gob package now allows the transmission of non-struct values at the
-top-level. As a result, the rpc and netchan packages have fewer restrictions
-on the types they can handle. For example, netchan can now share a chan int.
-
-The release also includes a Code Walk: "Share Memory By Communicating".
-It describes an idiomatic Go program that uses goroutines and channels:
- http://golang.org/doc/codewalk/sharemem/
-
-There is now a Projects page on the Go Dashboard that lists Go programs,
-tools, and libraries:
- http://godashboard.appspot.com/project
-
-Other changes:
-* 6a, 6l: bug fixes.
-* bytes, strings: add Replace.
-* cgo: use slash-free relative paths for .so references.
-* cmath: correct IsNaN for argument cmplx(Inf, NaN) (thanks Charles L. Dorian).
-* codereview: allow multiple email addresses in CONTRIBUTORS.
-* doc/codewalk: add Share Memory By Communicating.
-* exp/draw/x11: implement the mapping from keycodes to keysyms.
-* fmt: Printf: fix bug in handling of %#v, allow other verbs for slices
- Scan: fix handling of EOFs.
-* gc: bug fixes and optimizations.
-* gob: add DecodeValue and EncodeValue,
- add support for complex numbers.
-* goinstall: support for Bazaar+Launchpad (thanks Gustavo Niemeyer).
-* io/ioutil: add TempFile for Windows (thanks Peter Mundy).
-* ld: add -u flag to check safe bits; discard old -u, -x flags.
-* math: amd64 versions of Exp and Fabs (thanks Charles L. Dorian).
-* misc/vim: always override filetype detection for .go files.
-* net: add support for DNS SRV requests (thanks Kirklin McDonald),
- initial attempt to implement Windows version (thanks Alex Brainman).
-* netchan: allow chan of basic types now that gob can handle such,
- eliminate the need for a pointer value in Import and Export.
-* os/signal: only catch all signals if os/signal package imported.
-* regexp: bug fix: need to track whether match begins with fixed prefix.
-* rpc: allow non-struct args and reply (they must still be pointers).
-* runtime: bug fixes and reorganization.
-* strconv: fix bugs in floating-point and base 2 conversions
-* syscall: add syscall_bsd.go to zsycall_freebsd_386.go (thanks Peter Mundy),
- add socketpair (thanks Ivan Krasin).
-* time: implement time zones for Windows (thanks Alex Brainman).
-* x509: support non-self-signed certs.
-</pre>
-
-<h3 id="2010-06-21">2010-06-21</h3>
-
-<pre>
-This release includes a language change. The "..." function parameter form is
-gone; "...T" remains. Typically, "...interface{}" can be used instead of "...".
-
-The implementation of Printf has changed in a way that subtly affects its
-handling of the fmt.Stringer interface. You may need to make changes to your
-code. For details, see:
- https://groups.google.com/group/golang-nuts/msg/6fffba90a3e3dc06
-
-The reflect package has been changed. If you have code that uses reflect,
-it will need to be updated. For details, see:
- https://groups.google.com/group/golang-nuts/msg/7a93d07c590e7beb
-
-Other changes:
-* 8l: correct test for sp == top of stack in 8l -K code.
-* asn1: allow '*' in PrintableString.
-* bytes.Buffer.ReadFrom: fix bug.
-* codereview: avoid exception in match (thanks Paolo Giarrusso).
-* complex divide: match C99 implementation.
-* exp/draw: small draw.drawGlyphOver optimization.
-* fmt: Print*: reimplement to switch on type first,
- Scanf: improve error message when input does not match format.
-* gc: better error messages for interface failures, conversions, undefined symbols.
-* go/scanner: report illegal escape sequences.
-* gob: substitute slice for map.
-* goinstall: process dependencies for package main (thanks Roger Peppe).
-* gopack: add S flag to force marking a package as safe,
- simplify go metadata code.
-* html: sync testdata/webkit to match WebKit tip.
-* http: reply to Expect 100-continue requests automatically (thanks Brad Fitzpatrick).
-* image: add an Alpha16 type.
-* ld: pad Go symbol table out to page boundary (fixes cgo crash).
-* misc/vim: reorganize plugin to be easier to use (thanks James Whitehead).
-* path: add Base, analogous to Unix basename.
-* pkg/Makefile: allow DISABLE_NET_TESTS=1 to disable network tests.
-* reflect: add Kind, Type.Bits, remove Int8Type, Int8Value, etc.
-* runtime: additional Windows support (thanks Alex Brainman),
- correct fault for 16-bit divide on Leopard,
- fix 386 signal handler bug.
-* strconv: add AtofN, FtoaN.
-* string: add IndexFunc and LastIndexFunc (thanks Roger Peppe).
-* syslog: use local network for tests.
-</pre>
-
-<h3 id="2010-06-09">2010-06-09</h3>
-
-<pre>
-This release contains many fixes and improvements, including several
-clarifications and consolidations to the Language Specification.
-
-The type checking rules around assignments and conversions are simpler but more
-restrictive: assignments no longer convert implicitly from *[10]int to []int
-(write x[0:] instead of &x), and conversions can no longer change the names of
-types inside composite types.
-
-The fmt package now includes flexible type-driven (fmt.Scan) and
-format-driven (fmt.Scanf) scanners for all basic types.
-
-* big: bug fix for Quo aliasing problem.
-* bufio: change ReadSlice to match description.
-* cgo: bug fixes.
-* doc: add Google I/O talk and programs,
- codereview + Mercurial Queues info (thanks Peter Williams).
-* exp/draw: Draw fast paths for the Over operator,
- add Rectangle.Eq and Point.In, fix Rectangle.Clip (thanks Roger Peppe).
-* fmt: Scan fixes and improvements.
-* gc: backslash newline is not a legal escape sequence in strings,
- better error message when ~ operator is found,
- fix export of complex types,
- new typechecking rules.
-* go/parser: correct position of empty statement ';'.
-* gofmt: fix test script.
-* goinstall: use 'git pull' instead of 'git checkout' (thanks Michael Hoisie).
-* http: add Head function for making HTTP HEAD requests,
- handle status 304 correctly.
-* image: add Opaque method to the image types.
- make Color.RGBA return 16 bit color instead of 32 bit color.
-* io/ioutil: add TempFile.
-* math: Pow special cases and additional tests (thanks Charles L. Dorian).
-* netchan: improve closing and shutdown.
-* os: implement os.FileInfo.*time_ns for windows (thanks Alex Brainman).
-* os/signal: correct the regexp for finding Unix signal names (thanks Vinu Rajashekhar).
-* regexp: optimizations (thanks Kyle Consalus).
-* runtime: fix printing -Inf (thanks Evan Shaw),
- finish pchw -> tiny, added gettime for tiny (thanks Daniel Theophanes).
-* spec: clean-ups and consolidation.
-* syscall: additional Windows compatibility fixes (thanks Alex Brainman).
-* test/bench: added regex-dna-parallel.go (thanks Kyle Consalus).
-* vector: type-specific Do functions now take f(type) (thanks Michael Hoisie).
-</pre>
-
-<h3 id="2010-05-27">2010-05-27</h3>
-
-<pre>
-A sizeable release, including standard library improvements and a slew of
-compiler bug fixes. The three-week interval was largely caused by the team
-preparing for Google I/O.
-
-* big: add Rat type (thanks Evan Shaw),
- new features, much performance tuning, cleanups, and more tests.
-* bignum: deprecate by moving into exp directory.
-* build: allow MAKEFLAGS to be set outside the build scripts (thanks Christopher Wedgwood).
-* bytes: add Trim, TrimLeft, TrimRight, and generic functions (thanks Michael Hoisie).
-* cgo: fix to permit cgo callbacks from init code.
-* cmath: update range of Phase and Polar due to signed zero (thanks Charles L. Dorian).
-* codereview: work better with mq (thanks Peter Williams).
-* compress: renamings
- NewDeflater -> NewWriter
- NewInflater -> NewReader
- Deflater -> Compressor
- Inflater -> Decompressor
-* exp/draw/x11: respect $XAUTHORITY,
- treat $DISPLAY the same way x-go-bindings does.
-* exp/draw: fast path for glyph images, other optimizations,
- fix Rectangle.Canon (thanks Roger Peppe).
-* fmt: Scan, Scanln: Start of a simple scanning API in the fmt package,
- fix Printf crash when given an extra nil argument (thanks Roger Peppe).
-* gc: better error when computing remainder of non-int (thanks Evan Shaw),
- disallow middot in Go programs,
- distinguish array, slice literal in error messages,
- fix shift/reduce conflict in go.y export syntax,
- fix unsafe.Sizeof on ideal constants,
- handle use of builtin function outside function call,
- many other bug fixes.
-* gob: add support for maps,
- add test for indirect maps, slices, arrays.
-* godoc: collect package comments from all package files.
-* gofmt: don't lose mandatory semicolons,
- exclude test w/ illegal syntax from test cases,
- fix printing of labels.
-* http: prevent crash if remote server is not responding with "HTTP/".
-* json: accept escaped slash in string scanner (thanks Michael Hoisie),
- fix array -> non-array decoding.
-* libmach: skip __nl_symbol_ptr section on OS X.
-* math: amd64 versions of Fdim, Fmax, Fmin,
- signed zero Sqrt special case (thanks Charles L. Dorian).
-* misc/kate: convert isn't a built in function (thanks Evan Shaw).
-* net: implement BindToDevice,
- implement raw sockets (thanks Christopher Wedgwood).
-* netFD: fix race between Close and Read/Write (thanks Michael Hoisie).
-* os: add Chtimes function (thanks Brad Fitzpatrick).
-* pkg/Makefile: add netchan to standard package list.
-* runtime: GOMAXPROCS returns previous value,
- allow large map values,
- avoid allocation for fixed strings,
- correct tracebacks for nascent goroutines, even closures,
- free old hashmap pieces during resizing.
-* spec: added imaginary literal to semicolon rules (was missing),
- fix and clarify syntax of conversions,
- simplify section on channel types,
- other minor tweaks.
-* strconv: Btoui64 optimizations (thanks Kyle Consalus).
-* strings: use copy instead of for loop in Map (thanks Kyle Consalus).
-* syscall: implement BindToDevice (thanks Christopher Wedgwood),
- add Utimes on Darwin/FreeBSD, add Futimes everywhere,
- regenerate syscalls for some platforms.
-* template: regularize name lookups of interfaces, pointers, and methods.
-</pre>
-
-<h3 id="2010-05-04">2010-05-04</h3>
-
-<pre>
-In this release we renamed the Windows OS target from 'mingw' to 'windows'.
-If you are currently building for 'mingw' you should set GOOS=windows instead.
-
-* 5l, 6l, 8l, runtime: make -s binaries work.
-* 5l, 6l, 8l: change ELF header so that strip doesn't destroy binary.
-* 8l: fix absolute path detection on Windows.
-* big: new functions, optimizations, and cleanups,
- add bitwise methods for Int (thanks Evan Shaw).
-* bytes: Change IndexAny to look for UTF-8 encoded characters.
-* darwin: bsdthread_create can fail; print good error.
-* fmt: %T missing print <nil> for nil (thanks Christopher Wedgwood).
-* gc: many fixes.
-* misc/cgo/gmp: fix bug in SetString.
-* net: fix resolv.conf EOF without newline bug (thanks Christopher Wedgwood).
-* spec: some small clarifications (no language changes).
-* syscall: add EWOULDBLOCK to sycall_nacl.go,
- force O_LARGEFILE in Linux open system call,
- handle EOF on pipe - special case on Windows (thanks Alex Brainman),
- mingw Sleep (thanks Joe Poirier).
-* test/bench: import new fasta C reference, update Go, optimizations.
-* test: test of static initialization (fails).
-* vector: use correct capacity in call to make.
-* xml: allow text segments to end at EOF.
-</pre>
-
-<h3 id="2010-04-27">2010-04-27</h3>
-
-<pre>
-This release includes a new Codelab that illustrates the construction of a
-simple wiki web application:
- http://golang.org/doc/codelab/wiki/
-
-It also includes a Codewalk framework for documenting code. See:
- http://golang.org/doc/codewalk/
-
-Other changes:
-* 6g: fix need for parens around array index expression.
-* 6l, 8l: include ELF header in PT_LOAD mapping for text segment.
-* arm: add android runner script,
- support for printing floats.
-* big: implemented Karatsuba multiplication,
- many fixes and improvements (thanks Evan Shaw).
-* bytes: add Next method to Buffer, simplify Read,
- shuffle implementation, making WriteByte 50% faster.
-* crypto/tls: simpler implementation of record layer.
-* exp/eval: fixes (thanks Evan Shaw).
-* flag: eliminate unnecessary structs.
-* gc: better windows support,
- cmplx typecheck bug fix,
- more specific error for statements at top level.
-* go/parser: don't require unnecessary parens.
-* godoc: exclude duplicate entries (thanks Andrei Vieru),
- use int64 for timestamps (thanks Christopher Wedgwood).
-* gofmt: fine-tune stripping of parentheses,
-* json: Marshal, Unmarshal using new scanner,
- preserve field name case by default,
- scanner, Compact, Indent, and tests,
- support for streaming.
-* libmach: disassemble MOVLQZX correctly.
-* math: more special cases for signed zero (thanks Charles L. Dorian).
-* net: add Pipe,
- fix bugs in packStructValue (thanks Michael Hoisie),
- introduce net.Error interface.
-* os: FileInfo: regularize the types of some fields,
- create sys_bsd.go (thanks Giles Lean),
- mingw bug fixes (thanks Alex Brainman).
-* reflect: add FieldByNameFunc (thanks Raif S. Naffah),
- implement Set(nil), SetValue(nil) for PtrValue and MapValue.
-* regexp: allow escaping of any punctuation.
-* rpc/jsonrpc: support for jsonrpc wire encoding.
-* rpc: abstract client and server encodings,
- add Close() method to rpc.Client.
-* runtime: closures, defer bug fix for Native Client,
- rename cgo2c, *.cgo to goc2c, *.goc to avoid confusion with real cgo.
- several other fixes.
-* scanner: implement Peek() to look at the next char w/o advancing.
-* strings: add ReadRune to Reader, add FieldsFunc (thanks Kyle Consalus).
-* syscall: match linux Setsid function signature to darwin,
- mingw bug fixes (thanks Alex Brainman).
-* template: fix handling of pointer inside interface.
-* test/bench: add fannkuch-parallel.go (thanks Kyle Consalus),
- pidigits ~10% performance win by using adds instead of shifts.
-* time: remove incorrect time.ISO8601 and add time.RFC3339 (thanks Micah Stetson).
-* utf16: add DecodeRune, EncodeRune.
-* xml: add support for XML marshalling embedded structs (thanks Raif S. Naffah),
- new "innerxml" tag to collect inner XML.
-</pre>
-
-<h3 id="2010-04-13">2010-04-13</h3>
-
-<pre>
-This release contains many changes:
-
-* 8l: add DOS stub to PE binaries (thanks Evan Shaw).
-* cgo: add //export.
-* cmath: new complex math library (thanks Charles L. Dorian).
-* docs: update to match current coding style (thanks Christopher Wedgwood).
-* exp/eval: fix example and add target to Makefile (thanks Evan Shaw).
-* fmt: change behaviour of format verb %b to match %x when negative (thanks Andrei Vieru).
-* gc: compile s == "" as len(s) == 0,
- distinguish fatal compiler bug from error+exit,
- fix alignment on non-amd64,
- good syntax error for defer func() {} - missing fina (),
- implement panic and recover,
- zero unnamed return values on entry if func has defer.
-* goyacc: change to be reentrant (thanks Roger Peppe).
-* io/ioutil: fix bug in ReadFile when Open succeeds but Stat fails.
-* kate: update for recent language changes (thanks Evan Shaw).
-* libcgo: initial mingw port work - builds but untested (thanks Joe Poirier).
-* math: new functions and special cases (thanks Charles L. Dorian)
-* net: use chan bool instead of chan *netFD to avoid cycle.
-* netchan: allow client to send as well as receive.
-* nntp: new package, NNTP client (thanks Conrad Meyer).
-* os: rename os.Dir to os.FileInfo.
-* rpc: don't log normal EOF,
- fix ServeConn to block as documented.
-* runtime: many bug fixes, better ARM support.
-* strings: add IndexRune, Trim, TrimLeft, TrimRight, etc (thanks Michael Hoisie).
-* syscall: implement some mingw syscalls required by os (thanks Alex Brainman).
-* test/bench: add k-nucleotide-parallel (thanks Kyle Consalus).
-* Unicode: add support for Turkish case mapping.
-* xgb: move from the main repository to http://code.google.com/p/x-go-binding/
-</pre>
-
-<h3 id="2010-03-30">2010-03-30</h3>
-
-<pre>
-This release contains three language changes:
-
-1. Accessing a non-existent key in a map is no longer a run-time error.
-It now evaluates to the zero value for that type. For example:
- x := myMap[i] is now equivalent to: x, _ := myMap[i]
-
-2. It is now legal to take the address of a function's return value.
-The return values are copied back to the caller only after deferred
-functions have run.
-
-3. The functions panic and recover, intended for reporting and recovering from
-failure, have been added to the spec:
- http://golang.org/doc/go_spec.html#Handling_panics
-In a related change, panicln is gone, and panic is now a single-argument
-function. Panic and recover are recognized by the gc compilers but the new
-behavior is not yet implemented.
-
-The ARM build is broken in this release; ARM users should stay at release.2010-03-22.
-
-Other changes:
-* bytes, strings: add IndexAny.
-* cc/ld: Add support for #pragma dynexport,
- Rename dynld to dynimport throughout. Cgo users will need to rerun cgo.
-* expvar: default publishings for cmdline, memstats
-* flag: add user-defined flag types.
-* gc: usual bug fixes
-* go/ast: generalized ast filtering.
-* go/printer: avoid reflect in print.
-* godefs: fix handling of negative constants.
-* godoc: export pprof debug information, exported variables,
- support for filtering of command-line output in -src mode,
- use http GET for remote search instead of rpc.
-* gofmt: don't convert multi-line functions into one-liners,
- preserve newlines in multiline selector expressions (thanks Risto Jaakko Saarelma).
-* goinstall: include command name in error reporting (thanks Andrey Mirtchovski)
-* http: add HandleFunc as shortcut to Handle(path, HandlerFunc(func))
-* make: use actual dependency for install
-* math: add J1, Y1, Jn, Yn, J0, Y0 (Bessel functions) (thanks Charles L. Dorian)
-* prof: add pprof from google-perftools
-* regexp: don't return non-nil *Regexp if there is an error.
-* runtime: add Callers,
- add malloc sampling, pprof interface,
- add memory profiling, more statistics to runtime.MemStats,
- implement missing destroylock() (thanks Alex Brainman),
- more malloc statistics,
- run all finalizers in a single goroutine,
- Goexit runs deferred calls.
-* strconv: add Atob and Btoa,
- Unquote could wrongly return a nil error on error (thanks Roger Peppe).
-* syscall: add IPV6 constants,
- add syscall_bsd.go for Darwin and other *BSDs (thanks Giles Lean),
- implement SetsockoptString (thanks Christopher Wedgwood).
-* websocket: implement new protocol (thanks Fumitoshi Ukai).
-* xgb: fix request length and request size (thanks Firmansyah Adiputra).
-* xml: add CopyToken (thanks Kyle Consalus),
- add line numbers to syntax errors (thanks Kyle Consalus),
- use io.ReadByter in place of local readByter (thanks Raif S. Naffah).
-</pre>
-
-<h3 id="2010-03-22">2010-03-22</h3>
-
-<pre>
-With this release we announce the launch of the Go Blog:
- http://blog.golang.org/
-The first post is a brief update covering what has happened since the launch.
-
-This release contains some new packages and functionality, and many fixes:
-* 6g/8g: fix issues with complex data types, other bug fixes.
-* Makefiles: refactored to make writing external Makefiles easier.
-* crypto/rand: new package.
-* godoc: implemented command-line search via RPC,
- improved comment formatting: recognize URLs.
-* gofmt: more consistent formatting of const/var decls.
-* http: add Error helper function,
- add ParseQuery (thanks Petar Maymounkov),
- change RawPath to mean raw path, not raw everything-after-scheme.
-* image/jpeg: fix typos.
-* json: add MarshalIndent (accepts user-specified indent string).
-* math: add Gamma function (thanks Charles L. Dorian).
-* misc/bbedit: support for cmplx, real, imag (thanks Anthony Starks).
-* misc/vim: add new complex types, functions and literals.
-* net: fix IPMask.String not to crash on all-0xff mask.
-* os: drop File finalizer after normal Close.
-* runtime: add GOROOT and Version,
- lock finalizer table accesses.
-* sha512: add sha384 (truncated version) (thanks Conrad Meyer).
-* syscall: add const ARCH, analogous to OS.
-* syscall: further additions to mingw port (thanks Alex Brainman).
-* template: fixed html formatter []byte input bug.
-* utf16: new package.
-* version.bash: cope with ancient Mercurial.
-* websocket: use URL.RawPath to construct WebSocket-Location: header.
-</pre>
-
-<h3 id="2010-03-15">2010-03-15</h3>
-
-<pre>
-This release includes a language change: support for complex numbers.
- http://golang.org/doc/go_spec.html#Imaginary_literals
- http://golang.org/doc/go_spec.html#Complex_numbers
-There is no library support as yet.
-
-This release also includes the goinstall command-line tool.
- http://golang.org/cmd/goinstall/
- http://groups.google.com/group/golang-nuts/t/f091704771128e32
-
-* 5g/6g/8g: fix double function call in slice.
-* arm: cleanup build warnings. (thanks Dean Prichard)
-* big: fix mistakes with probablyPrime.
-* bufio: add WriteRune.
-* bytes: add ReadRune and WriteRune to bytes.Buffer.
-* cc: stack split bug fix.
-* crypto: add SHA-224 to sha256, add sha512 package. (thanks Conrad Meyer)
-* crypto/ripemd160: new package. (thanks Raif S. Naffah)
-* crypto/rsa: don't use safe primes.
-* gc: avoid fixed length buffer cleanbuf. (thanks Dean Prichard)
- better compilation of floating point +=
- fix crash on complicated arg to make slice.
- remove duplicate errors, give better error for I.(T)
-* godoc: support for multiple packages in a directory, other fixes.
-* gofmt: bug fixes.
-* hash: add Sum64 interface.
-* hash/crc32: add Update function.
-* hash/crc64: new package implementing 64-bit CRC.
-* math: add ilogb, logb, remainder. (thanks Charles L. Dorian)
-* regexp: add ReplaceAllFunc, ReplaceAllStringFunc.
-* runtime: clock garbage collection on bytes allocated, not pages in use.
-* strings: make Split(s, "", n) faster. (thanks Spring Mc)
-* syscall: minimal mingw version of syscall. (thanks Alex Brainman)
-* template: add ParseFile, MustParseFile.
-</pre>
-
-<h3 id="2010-03-04">2010-03-04</h3>
-
-<pre>
-There is one language change: the ability to convert a string to []byte or
-[]int. This deprecates the strings.Bytes and strings.Runes functions.
-You can convert your existing sources using these gofmt commands:
- gofmt -r 'strings.Bytes(x) -> []byte(x)' -w file-or-directory-list
- gofmt -r 'strings.Runes(x) -> []int(x)' -w file-or-directory-list
-After running these you might need to delete unused imports of the "strings"
-package.
-
-Other changes and fixes:
-* 6l/8l/5l: add -r option
-* 8g: make a[byte(x)] truncate x
-* codereview.py: fix for compatibility with hg >=1.4.3
-* crypto/blowfish: new package (thanks Raif S. Naffah)
-* dashboard: more performance tuning
-* fmt: use String method in %q to get the value to quote.
-* gofmt: several cosmetic changes
-* http: fix handling of Connection: close, bug in http.Post
-* net: correct DNS configuration,
- fix network timeout boundary condition,
- put [ ] around IPv6 addresses for Dial.
-* path: add Match,
- fix bug in Match with non-greedy stars (thanks Kevin Ballard)
-* strings: delete Bytes, Runes (see above)
-* tests: an Eratosthenesque concurrent prime sieve (thanks Anh Hai Trinh)
-</pre>
-
-<h3 id="2010-02-23">2010-02-23</h3>
-
-<pre>
-This release is mainly bug fixes and a little new code.
-There are no language changes.
-
-6g/5g/8g: bug fixes
-8a/8l: Added FCMOVcc instructions (thanks Evan Shaw and Charles Dorian)
-crypto/x509: support certificate creation
-dashboard: caching to avoid datastore queries
-exec: add dir argument to Run
-godoc: bug fixes and code cleanups
-http: continued implementation and bug fixes (thanks Petar Maymounkov)
-json: fix quoted strings in Marshal (thanks Sergei Skorobogatov)
-math: more functions, test cases, and benchmarks (thanks Charles L. Dorian)
-misc/bbedit: treat predeclared identifiers as "keywords" (thanks Anthony Starks)
-net: disable UDP server test (flaky on various architectures)
-runtime: work around Linux kernel bug in futex,
- pchw is now tiny
-sync: fix to work on armv5 (thanks Dean Prichard)
-websocket: fix binary frame size decoding (thanks Timo Savola)
-xml: allow unquoted attribute values in non-Strict mode (thanks Amrut Joshi)
- treat bool as value in Unmarshal (thanks Michael Hoisie)
-</pre>
-
-<h3 id="2010-02-17">2010-02-17</h3>
-
-<pre>
-There are two small language changes:
-* NUL bytes may be rejected in souce files, and the tools do reject them.
-* Conversions from string to []int and []byte are defined but not yet implemented.
-
-Other changes and fixes:
-* 5a/6a/8a/5c/6c/8c: remove fixed-size arrays for -I and -D options (thanks Dean Prichard)
-* 5c/6c/8c/5l/6l/8l: add -V flag to display version number
-* 5c/6c/8c: use "cpp" not "/bin/cpp" for external preprocessor (thanks Giles Lean)
-* 8a/8l: Added CMOVcc instructions (thanks Evan Shaw)
-* 8l: pe executable building code changed to include import table for kernel32.dll functions (thanks Alex Brainman)
-* 5g/6g/8g: bug fixes
-* asn1: bug fixes and additions (incl marshalling)
-* build: fix build for Native Client, Linux/ARM
-* dashboard: show benchmarks, add garbage collector benchmarks
-* encoding/pem: add marshalling support
-* exp/draw: fast paths for a nil mask
-* godoc: support for directories outside $GOROOT
-* http: sort header keys when writing Response or Request to wire (thanks Petar Maymounkov)
-* math: special cases and new functions (thanks Charles Dorian)
-* mime: new package, used in http (thanks Michael Hoisie)
-* net: dns bug fix - use random request id
-* os: finalize File, to close fd.
-* path: make Join variadic (thanks Stephen Weinberg)
-* regexp: optimization bug fix
-* runtime: misc fixes and optimizations
-* syscall: make signature of Umask on OS X, FreeBSD match Linux. (thanks Giles Lean)
-</pre>
-
-<h3 id="2010-02-04">2010-02-04</h3>
-
-<pre>
-There is one language change: support for ...T parameters:
- http://golang.org/doc/go_spec.html#Function_types
-
-You can now check build status on various platforms at the Go Dashboard:
- http://godashboard.appspot.com
-
-* 5l/6l/8l: several minor fixes
-* 5a/6a/8a/5l/6l/8l: avoid overflow of symb buffer (thanks Dean Prichard)
-* compress/gzip: gzip deflater (i.e., writer)
-* debug/proc: add mingw specific build stubs (thanks Joe Poirier)
-* exp/draw: separate the source-point and mask-point in Draw
-* fmt: handle nils safely in Printf
-* gccgo: error messages now match those of gc
-* godoc: several fixes
-* http: bug fixes, revision of Request/Response (thanks Petar Maymounkov)
-* image: new image.A type to represent anti-aliased font glyphs
- add named colors (e.g. image.Blue), suitable for exp/draw
-* io: fixed bugs in Pipe
-* malloc: merge into package runtime
-* math: fix tests on FreeBSD (thanks Devon H. O'Dell)
- add functions; update tests and special cases (thanks Charles L. Dorian)
-* os/signal: send SIGCHLDs to Incoming (thanks Chris Wedgwood)
-* reflect: add StringHeader to reflect
-* runtime: add SetFinalizer
-* time: Sleep through interruptions (thanks Chris Wedgwood)
- add RFC822 formats
- experimental implemenation of Ticker using two goroutines for all tickers
-* xml: allow underscores in XML element names (thanks Michael Hoisie)
- allow any scalar type in xml.Unmarshal
-</pre>
-
-<h3 id="2010-01-27">2010-01-27</h3>
-
-<pre>
-There are two small language changes: the meaning of chan <- chan int
-is now defined, and functions returning functions do not need to
-parenthesize the result type.
-
-There is one significant implementation change: the compilers can
-handle multiple packages using the same name in a single binary.
-In the gc compilers, this comes at the cost of ensuring that you
-always import a particular package using a consistent import path.
-In the gccgo compiler, the cost is that you must use the -fgo-prefix
-flag to pass a unique prefix (like the eventual import path).
-
-5a/6a/8a: avoid use of fixed-size buffers (thanks Dean Prichard)
-5g, 6g, 8g: many minor bug fixes
-bufio: give Writer.WriteString same signature as bytes.Buffer.WriteString.
-container/list: PushFrontList, PushBackList (thanks Jan Hosang)
-godoc: trim spaces from search query (thanks Christopher Wedgwood)
-hash: document that Sum does not change state, fix crypto hashes
-http: bug fixes, revision of Request/Response (thanks Petar Maymounkov)
-math: more handling of IEEE 754 special cases (thanks Charles Dorian)
-misc/dashboard: new build dashboard
-net: allow UDP broadcast,
- use /etc/hosts to resolve names (thanks Yves Junqueira, Michael Hoisie)
-netchan: beginnings of new package for connecting channels across a network
-os: allow FQDN in Hostname test (thanks Icarus Sparry)
-reflect: garbage collection bug in Call
-runtime: demo of Go on raw (emulated) hw in runtime/pchw,
- performance fix on OS X
-spec: clarify meaning of chan <- chan int,
- func() func() int is allowed now,
- define ... T (not yet implemented)
-template: can use interface values
-time: fix for +0000 time zone,
- more robust tick.Stop.
-xgb: support for authenticated connections (thanks Firmansyah Adiputra)
-xml: add Escape (thanks Stephen Weinberg)
-</pre>
-
-<h3 id="2010-01-13">2010-01-13</h3>
-
-<pre>
-This release is mainly bug fixes with a little new code.
-There are no language changes.
-
-build: $GOBIN should no longer be required in $PATH (thanks Devon H. O'Dell),
- new package target "make bench" to run benchmarks
-8g: faster float -> uint64 conversion (thanks Evan Shaw)
-5g, 6g, 8g:
- clean opnames.h to avoid stale errors (thanks Yongjian Xu),
- a handful of small compiler fixes
-5g, 6g, 8g, 5l, 6l, 8l: ignore $GOARCH, which is implied by name of tool
-6prof: support for writing input files for google-perftools's pprof
-asn1: fix a few structure-handling bugs
-cgo: many bug fixes (thanks Devon H. O'Dell)
-codereview: repeated "hg mail" sends "please take another look"
-gob: reserve ids for future expansion
-godoc: distinguish HTML generation from plain text HTML escaping (thanks Roger Peppe)
-gofmt: minor bug fixes, removed -oldprinter flag
-http: add CanonicalPath (thanks Ivan Krasin),
- avoid header duplication in Response.Write,
- correctly escape/unescape URL sections
-io: new interface ReadByter
-json: better error, pointer handling in Marshal (thanks Ivan Krasin)
-libmach: disassembly of FUCOMI, etc (thanks Evan Shaw)
-math: special cases for most functions and 386 hardware Sqrt (thanks Charles Dorian)
-misc/dashboard: beginning of a build dashboard at godashboard.appspot.com.
-misc/emacs: handling of new semicolon rules (thanks Austin Clements),
- empty buffer bug fix (thanks Kevin Ballard)
-misc/kate: highlighting improvements (tahnks Evan Shaw)
-os/signal: add signal names: signal.SIGHUP, etc (thanks David Symonds)
-runtime: preliminary Windows support (thanks Hector Chu),
- preemption polling to reduce garbage collector pauses
-scanner: new lightweight scanner package
-template: bug fix involving spaces before a delimited block
-test/bench: updated timings
-time: new Format, Parse functions
-</pre>
-
-<h3 id="2010-01-05">2010-01-05</h3>
-
-<pre>
-This release is mainly bug fixes. There are no language changes.
-
-6prof: now works on 386
-8a, 8l: add FCOMI, FCOMIP, FUCOMI, and FUCOMIP (thanks Evan Shaw)
-big: fix ProbablyPrime on small numbers
-container/vector: faster []-based implementation (thanks Jan Mercl)
-crypto/tls: extensions and Next Protocol Negotiation
-gob: one encoding bug fix, one decoding bug fix
-image/jpeg: support for RST markers
-image/png: support for transparent paletted images
-misc/xcode: improved support (thanks Ken Friedenbach)
-net: return nil Conn on error from Dial (thanks Roger Peppe)
-regexp: add Regexp.NumSubexp (thanks Peter Froehlich)
-syscall: add Nanosleep on FreeBSD (thanks Devon H. O'Dell)
-template: can use map in .repeated section
-
-There is now a public road map, in the repository and online
-at <a href="http://golang.org/doc/devel/roadmap.html">http://golang.org/doc/devel/roadmap.html</a>.
-</pre>
-
-<h3 id="2009-12-22">2009-12-22</h3>
-
-<pre>
-Since the last release there has been one large syntactic change to
-the language, already discussed extensively on this list: semicolons
-are now implied between statement-ending tokens and newline characters.
-See http://groups.google.com/group/golang-nuts/t/5ee32b588d10f2e9 for
-details.
-
-By default, gofmt now parses and prints the new lighter weight syntax.
-To convert programs written in the old syntax, you can use:
-
- gofmt -oldparser -w *.go
-
-Since everything was being reformatted anyway, we took the opportunity to
-change the way gofmt does alignment. Now gofmt uses tabs at the start
-of a line for basic code alignment, but it uses spaces for alignment of
-interior columns. Thus, in an editor with a fixed-width font, you can
-choose your own tab size to change the indentation, and no matter what
-tab size you choose, columns will be aligned properly.
-
-
-In addition to the syntax and formatting changes, there have been many
-smaller fixes and updates:
-
-6g,8g,5g: many bug fixes, better registerization,
- build process fix involving mkbuiltin (thanks Yongjian Xu),
- method expressions for concrete types
-8l: support for Windows PE files (thanks Hector Chu)
-bytes: more efficient Buffer handling
-bytes, strings: new function Fields (thanks Andrey Mirtchovski)
-cgo: handling of enums (thanks Moriyoshi Koizumi),
- handling of structs with bit fields, multiple files (thanks Devon H. O'Dell),
- installation of .so to non-standard locations
-crypto/sha256: new package for SHA 256 (thanks Andy Davis)
-encoding/binary: support for slices of fixed-size values (thanks Maxim Ushakov)
-exp/vector: experimental alternate vector representation (thanks Jan Mercl)
-fmt: %p for chan, map, slice types
-gob: a couple more bug fixes
-http: support for basic authentication (thanks Ivan Krasin)
-image/jpeg: basic JPEG decoder
-math: correct handling of Inf and NaN in Pow (thanks Charles Dorian)
-misc/bash: completion file for bash (thanks Alex Ray)
-os/signal: support for handling Unix signals (thanks David Symonds)
-rand: Zipf-distributed random values (thanks William Josephson)
-syscall: correct error return bug on 32-bit machines (thanks Christopher Wedgwood)
-syslog: new package for writing to Unix syslog daemon (thanks Yves Junqueira)
-template: will automatically invoke niladic methods
-time: new ISO8601 format generator (thanks Ben Olive)
-xgb: converted generator to new syntax (thanks Tor Andersson)
-xml: better mapping of tag names to Go identifiers (thanks Kei Son),
- better handling of unexpected EOF (thanks Arvindh Rajesh Tamilmani)
-</pre>
-
-<h3 id="2009-12-09">2009-12-09</h3>
-
-<pre>
-Since the last release there are two changes to the language:
-
-* new builtin copy(dst, src) copies n = min(len(dst), len(src))
- elements to dst from src and returns n. It works correctly
- even if dst and src overlap. bytes.Copy is gone.
- Convert your programs using:
- gofmt -w -r 'bytes.Copy(d, s) -> copy(d, s)' *.go
-
-* new syntax x[lo:] is shorthand for x[lo:len(x)].
- Convert your programs using:
- gofmt -w -r 'a[b:len(a)] -> a[b:]' *.go
-
-In addition, there have been many smaller fixes and updates:
-
-* 6g/8g/5g: many bug fixes
-* 8g: fix 386 floating point stack bug (thanks Charles Dorian)
-* all.bash: now works even when $GOROOT has spaces (thanks Sergio Luis O. B. Correia),
- starting to make build work with mingw (thanks Hector Chu),
- FreeBSD support (thanks Devon O'Dell)
-* big: much faster on 386.
-* bytes: new function IndexByte, implemented in assembly
- new function Runes (thanks Peter Froehlich),
- performance tuning in bytes.Buffer.
-* codereview: various bugs fixed
-* container/vector: New is gone; just declare a Vector instead.
- call Resize to set len and cap.
-* cgo: many bug fixes (thanks Eden Li)
-* crypto: added MD4 (thanks Chris Lennert),
- added XTEA (thanks Adrian O'Grady).
-* crypto/tls: basic client
-* exp/iterable: new functions (thanks Michael Elkins)
-* exp/nacl: native client tree builds again
-* fmt: preliminary performance tuning
-* go/ast: more powerful Visitor (thanks Roger Peppe)
-* gob: a few bug fixes
-* gofmt: better handling of standard input, error reporting (thanks Fazlul Shahriar)
- new -r flag for rewriting programs
-* gotest: support for Benchmark functions (thanks Trevor Strohman)
-* io: ReadFile, WriteFile, ReadDir now in separate package io/ioutil.
-* json: new Marshal function (thanks Michael Hoisie),
- better white space handling (thanks Andrew Skiba),
- decoding into native data structures (thanks Sergey Gromov),
- handling of nil interface values (thanks Ross Light).
-* math: correct handling of sin/cos of large angles
-* net: better handling of Close (thanks Devon O'Dell and Christopher Wedgwood)
- support for UDP broadcast (thanks Jonathan Wills),
- support for empty packets
-* rand: top-level functions now safe to call from multiple goroutines
-(thanks Roger Peppe).
-* regexp: a few easy optimizations
-* rpc: better error handling, a few bug fixes
-* runtime: better signal handling on OS X, malloc fixes,
- global channel lock is gone.
-* sync: RWMutex now allows concurrent readers (thanks Péter Szabó)
-* template: can use maps as data (thanks James Meneghello)
-* unicode: updated to Unicode 5.2.
-* websocket: new package (thanks Fumitoshi Ukai)
-* xgb: preliminary X Go Bindings (thanks Tor Andersson)
-* xml: fixed crash (thanks Vish Subramanian)
-* misc: bbedit config (thanks Anthony Starks),
- kate config (thanks Evan Shaw)
-</pre>
+<p><a href="/doc/go_spec.html#Label_scopes">Unused labels are now illegal</a>, just as unused local variables are.</p>
+
+<h3 id="r57.pkg">Packages</h3>
+
+<p>
+<a href="/pkg/gob/">Package gob</a> will now encode and decode values of types that implement the
+<a href="/pkg/gob/#GobEncoder">GobEncoder</a> and
+<a href="/pkg/gob/#GobDecoder">GobDecoder</a> interfaces. This allows types with unexported
+fields to transmit self-consistent descriptions; examples include
+<a href="/pkg/big/#Int.GobDecode">big.Int</a> and <a href="/pkg/big/#Rat.GobDecode">big.Rat</a>.
+</p>
+
+<p>
+<a href="/pkg/http/">Package http</a> has been redesigned.
+For clients, there are new
+<a href="/pkg/http/#Client">Client</a> and <a href="/pkg/http/#Transport">Transport</a>
+abstractions that give more control over HTTP details such as headers sent
+and redirections followed. These abstractions make it easy to implement
+custom clients that add functionality such as <a href="http://code.google.com/p/goauth2/source/browse/oauth/oauth.go">OAuth2</a>.
+For servers, <a href="/pkg/http/#ResponseWriter">ResponseWriter</a>
+has dropped its non-essential methods.
+The Hijack and Flush methods are no longer required;
+code can test for them by checking whether a specific value implements
+<a href="/pkg/http/#Hijacker">Hijacker</a> or <a href="/pkg/http/#Flusher">Flusher</a>.
+The RemoteAddr and UsingTLS methods are replaced by <a href="/pkg/http/#Request">Request</a>'s
+RemoteAddr and TLS fields.
+The SetHeader method is replaced by a Header method;
+its result, of type <a href="/pkg/http/#Header">Header</a>,
+implements Set and other methods.
+</p>
+
+<p>
+<a href="/pkg/net/">Package net</a>
+drops the <code>laddr</code> argument from <a href="/pkg/net/#Conn.Dial">Dial</a>
+and drops the <code>cname</code> return value
+from <a href="/pkg/net/#LookupHost">LookupHost</a>.
+The implementation now uses <a href="/cmd/cgo/">cgo</a> to implement
+network name lookups using the C library getaddrinfo(3)
+function when possible. This ensures that Go and C programs
+resolve names the same way and also avoids the OS X
+application-level firewall.
+</p>
+
+<p>
+<a href="/pkg/os/">Package os</a>
+introduces simplified <a href="/pkg/os/#File.Open">Open</a>
+and <a href="/pkg/os/#File.Create">Create</a> functions.
+The original Open is now available as <a href="/pkg/os/#File.OpenFile">OpenFile</a>.
+The final three arguments to <a href="/pkg/os/#Process.StartProcess">StartProcess</a>
+have been replaced by a pointer to a <a href="/pkg/os/#ProcAttr">ProcAttr</a>.
+</p>
+
+<p>
+<a href="/pkg/reflect/">Package reflect</a> has been redesigned.
+<a href="/pkg/reflect/#Type">Type</a> is now an interface that implements
+all the possible type methods.
+Instead of a type switch on a Type <code>t</code>, switch on <code>t.Kind()</code>.
+<a href="/pkg/reflect/#Value">Value</a> is now a struct value that
+implements all the possible value methods.
+Instead of a type switch on a Value <code>v</code>, switch on <code>v.Kind()</code>.
+Typeof and NewValue are now called <a href="/pkg/reflect/#Type.TypeOf">TypeOf</a> and <a href="/pkg/reflect/#Value.ValueOf">ValueOf</a>
+To create a writable Value, use <code>New(t).Elem()</code> instead of <code>Zero(t)</code>.
+See <a href="http://code.google.com/p/go/source/detail?r=843855f3c026">the change description</a>
+for the full details.
+The new API allows a more efficient implementation of Value
+that avoids many of the allocations required by the previous API.
+</p>
+
+<p>
+Remember that gofix will handle the bulk of the rewrites
+necessary for these changes to package APIs.
+</p>
+
+<h3 id="r57.tool">Tools</h3>
+
+<p><a href="/cmd/gofix/">Gofix</a>, a new command, is described above.</p>
+
+<p>
+<a href="/cmd/gotest/">Gotest</a> is now a Go program instead of a shell script.
+The new <code>-test.short</code> flag in combination with package testing's Short function
+allows you to write tests that can be run in normal or “short” mode;
+all.bash runs tests in short mode to reduce installation time.
+The Makefiles know about the flag: use <code>make testshort</code>.
+</p>
+
+<p>
+The run-time support now implements CPU and memory profiling.
+Gotest's new
+<a href="/cmd/gotest/"><code>-test.cpuprofile</code> and
+<code>-test.memprofile</code> flags</a> make it easy to
+profile tests.
+To add profiling to your web server, see the <a href="/pkg/http/pprof/">http/pprof</a>
+documentation.
+For other uses, see the <a href="/pkg/runtime/pprof/">runtime/pprof</a> documentation.
+</p>
+
+<h2 id="r56">r56 (released 2011/03/16)</h2>
+
+<p>
+The r56 release was the first stable release and corresponds to
+<code><a href="weekly.html#2011-03-07">weekly.2011-03-07.1</a></code>.
+The numbering starts at 56 because before this release,
+what we now consider weekly snapshots were called releases.
+</p>
diff --git a/doc/devel/roadmap.html b/doc/devel/roadmap.html
index a73ec63..343203c 100644
--- a/doc/devel/roadmap.html
+++ b/doc/devel/roadmap.html
@@ -45,11 +45,7 @@ Debugger.
<li>
App Engine support.
<li>
-Improved CGO including some mechanism for calling back from C to Go.
-<li>
Improved implementation documentation.
-<li>
-Faster, allocation-light reflection.
</ul>
<h4 id="Gc_roadmap">
@@ -91,8 +87,6 @@ Packages roadmap</h4>
<ul>
<li>
-Faster, allocation-light reflection.
-<li>
Faster, RE2-like regular expressions.
<li>
Comprehensive support for international text.
@@ -134,4 +128,8 @@ Package manager (goinstall).
A means of recovering from a panic (recover).
<li>
5g: Better floating point support.
+<li>
+Improved CGO including some mechanism for calling back from C to Go.
+<li>
+Faster, allocation-light reflection.
</ul>
diff --git a/doc/devel/release.html b/doc/devel/weekly.html
similarity index 97%
copy from doc/devel/release.html
copy to doc/devel/weekly.html
index 0b70f03..5cb002f 100644
--- a/doc/devel/release.html
+++ b/doc/devel/weekly.html
@@ -1,15 +1,24 @@
-<!-- Release History -->
+<!-- Weekly Snapshot History -->
-<h2 id="Releases">Release History</h2>
-
-<p>This page summarizes the changes between tagged releases of Go.
+<p>This page summarizes the changes between tagged weekly snapshots of Go.
For full details, see the <a href="http://code.google.com/p/go/source/list">Mercurial change log</a>.</p>
-<h3 id="2011-04-27">2011-04-27</h3>
+<p>Weekly snapshots occur often and may not be stable.
+If stability of API and code is more important than having the
+latest features, use the <a href="release.html">official releases</a> instead.</p>
+
+<p>To update to a specific snapshot, use:</p>
+
+<pre>
+hg pull
+hg update weekly.<i>YYYY-MM-DD</i>
+</pre>
+
+<h2 id="2011-04-27">2011-04-27 (<a href="release.html#r57">base for r57</a>)</h2>
<pre>
This release includes revisions to the reflect package to make it more
-efficient, after last the weekly’s major API update. If your code uses reflect
+efficient, after the last weekly’s major API update. If your code uses reflect
it may require further changes, not all of which can be made automatically by
gofix. For the full details of the change, see
http://codereview.appspot.com/4435042
@@ -138,7 +147,7 @@ Other changes:
* xml: Parser hook for non-UTF-8 charset converters.
</pre>
-<h3 id="2011-04-13">2011-04-13</h3>
+<h2 id="2011-04-13">2011-04-13</h2>
<pre>
weekly.2011-04-13
@@ -226,7 +235,7 @@ Other changes:
* test/bench: enable build and test on Windows (thanks Alex Brainman).
</pre>
-<h3 id="2011-04-04">2011-04-04</h3>
+<h2 id="2011-04-04">2011-04-04</h2>
<pre>
This release includes changes to the net package. Your code will require
@@ -279,7 +288,7 @@ Other changes:
make [Raw]Syscall6 pass 6th arg on linux/386 (thanks Evan Shaw).
</pre>
-<h3 id="2011-03-28">2011-03-28</h3>
+<h2 id="2011-03-28">2011-03-28</h2>
<pre>
This weekly release includes improved support for testing.
@@ -357,12 +366,12 @@ Other changes:
StartProcess fixes for windows (thanks Alex Brainman),
permit non-blocking syscalls,
rename from .sh to .pl, because these files are in Perl.
-* test: enable tests using v, ok := <-ch syntax (thanks Robert Hencke).
+* test: enable tests using v, ok := <-ch syntax (thanks Robert Hencke).
* time: give a helpful message when we can't set the time zone for testing.
isolate syscall reference in sys.go.
</pre>
-<h3 id="2011-03-15">2011-03-15</h3>
+<h2 id="2011-03-15">2011-03-15</h2>
<pre>
This week's release introduces a new release tagging scheme. We intend to
@@ -389,12 +398,12 @@ introduces the new gofix tool.
The closed function has been removed from the language. The syntax for channel
receives has been changed to return an optional second value, a boolean value
indicating whether the channel is closed. This code:
- v := <-ch
+ v := <-ch
if closed(ch) {
// channel is closed
}
should now be written as:
- v, ok := <-ch
+ v, ok := <-ch
if !ok {
// channel is closed
}
@@ -499,7 +508,7 @@ Other changes:
* tls: move PeerCertificates to ConnectionState.
</pre>
-<h3 id="2011-03-07">2011-03-07 (r56)</h3>
+<h2 id="2011-03-07">2011-03-07 (<a href="release.html#r56">base for r56</a>)</h2>
<pre>
This release includes changes to the reflect and path packages.
@@ -561,7 +570,7 @@ Other changes:
* xml: permit nested directives (thanks Chris Dollin).
</pre>
-<h3 id="2011-02-24">2011-02-24</h3>
+<h2 id="2011-02-24">2011-02-24</h2>
<pre>
This release includes changes to the http package and a small language change.
@@ -644,7 +653,7 @@ Other changes:
* websocket: use new interface to access Header.
</pre>
-<h3 id="2011-02-15">2011-02-15</h3>
+<h2 id="2011-02-15">2011-02-15</h2>
<pre>
This release includes changes to the io, os, and template packages.
@@ -754,7 +763,7 @@ Other changes:
* windows: replace remaining __MINGW32__ instances with _WIN32 (thanks Joe Poirier).
</pre>
-<h3 id="2011-02-01">2011-02-01</h3>
+<h2 id="2011-02-01">2011-02-01</h2>
<pre>
This release includes significant changes to channel operations and minor
@@ -769,7 +778,7 @@ a communication.
For example, the old non-blocking send operation,
- if ch <- v {
+ if ch <- v {
// sent
} else {
// not sent
@@ -778,7 +787,7 @@ For example, the old non-blocking send operation,
should be rewritten as,
select {
- case ch <- v:
+ case ch <- v:
// sent
default:
// not sent
@@ -786,7 +795,7 @@ should be rewritten as,
Similarly, this receive,
- v, ok := <-ch
+ v, ok := <-ch
if ok {
// received
} else {
@@ -796,7 +805,7 @@ Similarly, this receive,
should be rewritten as,
select {
- case v := <-ch:
+ case v := <-ch:
// received
default:
// not received
@@ -899,7 +908,7 @@ Other changes in this release:
* unsafe: add missing case to doc for Pointer.
</pre>
-<h3 id="2011-01-20">2011-01-20</h3>
+<h2 id="2011-01-20">2011-01-20</h2>
<pre>
This release removes the float and complex types from the language.
@@ -913,7 +922,7 @@ use explicitly sized types.
The two-argument constructor cmplx is now spelled complex.
</pre>
-<h3 id="2011-01-19">2011-01-19</h3>
+<h2 id="2011-01-19">2011-01-19</h2>
<pre>
The 5g (ARM) compiler now has registerization enabled. If you discover it
@@ -968,7 +977,7 @@ example: http://golang.org/pkg/xml/
* windows: implement exception handling (thanks Hector Chu).
</pre>
-<h3 id="2011-01-12">2011-01-12</h3>
+<h2 id="2011-01-12">2011-01-12</h2>
<pre>
The json, gob, and template packages have changed, and code that uses them
@@ -1010,11 +1019,11 @@ Other changes:
* runtime: Restore scheduler stack position if cgo callback panics.
* suffixarray: faster creation algorithm (thanks Eric Eisner).
* syscall: fix mksysnum_linux.sh (thanks Anthony Martin).
-* time.NewTicker: panic for intervals <= 0.
+* time.NewTicker: panic for intervals <= 0.
* time: add AfterFunc to call a function after a duration (thanks Roger Peppe),
fix tick accuracy when using multiple Tickers (thanks Eoghan Sherry).</pre>
-<h3 id="2011-01-06">2011-01-06</h3>
+<h2 id="2011-01-06">2011-01-06</h2>
<pre>
This release includes several fixes and changes:
@@ -1054,7 +1063,7 @@ This release includes several fixes and changes:
make Access second argument consistently uint32.
</pre>
-<h3 id="2010-12-22">2010-12-22</h3>
+<h2 id="2010-12-22">2010-12-22</h2>
<pre>
A small release this week. The most significant change is that some
@@ -1077,7 +1086,7 @@ outstanding cgo issues were resolved.
* time: explain the formats a little better.
</pre>
-<h3 id="2010-12-15">2010-12-15</h3>
+<h2 id="2010-12-15">2010-12-15</h2>
<pre>
Package crypto/cipher has been started, to replace crypto/block.
@@ -1164,7 +1173,7 @@ If necessary, the NaCl code can be recovered from the repository history.
* xml: disallow invalid Unicode code points (thanks Nigel Kerr).
</pre>
-<h3 id="2010-12-08">2010-12-08</h3>
+<h2 id="2010-12-08">2010-12-08</h2>
<pre>
This release includes some package changes. If you use the crypto/tls or
@@ -1215,7 +1224,7 @@ Other changes:
* time: make After use fewer goroutines and host processes (thanks Roger Peppe).
</pre>
-<h3 id="2010-12-02">2010-12-02</h3>
+<h2 id="2010-12-02">2010-12-02</h2>
<pre>
Several package changes in this release may require you to update your code if
@@ -1255,7 +1264,7 @@ Any code that uses EncodeRune will need to be updated.
Other changes:
* [68]l: correct dwarf location for globals and ranges for arrays.
-* big: fix (*Rat) SetFrac64(a, b) when b < 0 (thanks Eoghan Sherry).
+* big: fix (*Rat) SetFrac64(a, b) when b < 0 (thanks Eoghan Sherry).
* compress/flate: fix typo in comment (thanks Mathieu Lonjaret).
* crypto/elliptic: use a Jacobian transform for better performance.
* doc/code.html: fix reference to "gomake build" (thanks Anschel Schaffer-Cohen).
@@ -1276,7 +1285,7 @@ Other changes:
* strconv: Atof on Infs and NaNs.
</pre>
-<h3 id="2010-11-23">2010-11-23</h3>
+<h2 id="2010-11-23">2010-11-23</h2>
<pre>
This release includes a backwards-incompatible package change to the
@@ -1308,7 +1317,7 @@ See the change for details and examples of how you might change your code:
* strings: add LastIndexAny (thanks Benny Siegert).
</pre>
-<h3 id="2010-11-10">2010-11-10</h3>
+<h2 id="2010-11-10">2010-11-10</h2>
<pre>
The birthday release includes a new Search capability inside the sort package.
@@ -1338,7 +1347,7 @@ In addition, there have been many smaller fixes and updates:
conflicts linking with external C libraries.
</pre>
-<h3 id="2010-11-02">2010-11-02</h3>
+<h2 id="2010-11-02">2010-11-02</h2>
<pre>
This release includes a language change: the new built-in function, append.
@@ -1350,7 +1359,7 @@ Other changes:
* doc: Effective Go: append and a few words about "..." args.
* build: fiddle with make variables.
* codereview: fix sync and download in Python 2.7 (thanks Fazlul Shahriar).
-* debug/pe, cgo: add windows support (thanks Wei Guangjing <vcc.163 at gmail.com>).
+* debug/pe, cgo: add windows support (thanks Wei Guangjing).
* go/ast: add Inspect function for easy AST inspection w/o a visitor.
* go/printer: do not remove parens around composite literals starting with
a type name in control clauses.
@@ -1375,7 +1384,7 @@ Other changes:
* testing: add Benchmark (thanks Roger Peppe).
</pre>
-<h3 id="2010-10-27">2010-10-27</h3>
+<h2 id="2010-10-27">2010-10-27</h2>
<pre>
*** This release changes the encoding used by package gob.
@@ -1399,7 +1408,7 @@ new -s flag.
The built-in copy function can now copy bytes from a string value to a []byte.
Code like this (for []byte b and string s):
- for i := 0; i < len(s); i++ {
+ for i := 0; i < len(s); i++ {
b[i] = s[i]
}
can be rewritten as:
@@ -1444,7 +1453,7 @@ Other changes:
* websocket: fix short Read.
</pre>
-<h3 id="2010-10-20">2010-10-20</h3>
+<h2 id="2010-10-20">2010-10-20</h2>
<pre>
This release removes the log package's deprecated functions.
@@ -1480,7 +1489,7 @@ Other changes:
* syscall/arm: correct 64-bit system call arguments.
</pre>
-<h3 id="2010-10-13">2010-10-13</h3>
+<h2 id="2010-10-13">2010-10-13</h2>
<pre>
This release includes changes to the log package, the removal of exp/iterable,
@@ -1556,7 +1565,7 @@ Other changes:
* websocket: enable tests on windows (thanks Alex Brainman).
</pre>
-<h3 id="2010-09-29">2010-09-29</h3>
+<h2 id="2010-09-29">2010-09-29</h2>
<pre>
This release includes some minor language changes and some significant package
@@ -1608,7 +1617,7 @@ Other changes:
consolidate FAQs into a single file, go_faq.html,
updates for new http interface.
* fmt/Printf: document and tweak error messages produced for bad formats.
-* gc: allow select case expr = <-c,
+* gc: allow select case expr = <-c,
eliminate duplicates in method table,
fix reflect table method receiver,
improve error message for x \= 0.
@@ -1640,7 +1649,7 @@ Other changes:
* xml: Allow entities inside CDATA tags (thanks Dan Sinclair).
</pre>
-<h3 id="2010-09-22">2010-09-22</h3>
+<h2 id="2010-09-22">2010-09-22</h2>
<pre>
This release includes new package functionality, and many bug fixes and changes.
@@ -1660,7 +1669,7 @@ It also improves support for the arm and nacl platforms.
* env.bash: fix building in directory with spaces in the path (thanks Alex Brainman).
* exp/4s, exp/nacl/av: sync to recent exp/draw changes.
* exp/draw/x11: mouse location is a signed integer.
-* exp/nacl/av: update color to max out at 1<<16-1 instead of 1<<32-1.
+* exp/nacl/av: update color to max out at 1<<16-1 instead of 1<<32-1.
* fmt: support '*' for width or precision (thanks Anthony Martin).
* gc: improvements to static initialization,
make sure path names are canonical.
@@ -1690,7 +1699,7 @@ It also improves support for the arm and nacl platforms.
* windows: fix netchan test by using 127.0.0.1.
</pre>
-<h3 id="2010-09-15">2010-09-15</h3>
+<h2 id="2010-09-15">2010-09-15</h2>
<pre>
This release includes a language change: the lower bound of a subslice may
@@ -1776,7 +1785,7 @@ as well as the following fixes and changes:
* windows: disable unimplemented tests (thanks Joe Poirier)
</pre>
-<h3 id="2010-09-06">2010-09-06</h3>
+<h2 id="2010-09-06">2010-09-06</h2>
<pre>
This release includes the syntactic modernization of more than 100 files in /test,
@@ -1846,7 +1855,7 @@ and these additions, changes, and fixes:
* websocket: fix missing Sec-WebSocket-Protocol on server response (thanks Jukka-Pekka Kekkonen).
</pre>
-<h3 id="2010-08-25">2010-08-25</h3>
+<h2 id="2010-08-25">2010-08-25</h2>
<pre>
This release includes changes to the build system that will likely require you
@@ -1915,7 +1924,7 @@ Other changes:
* yacc: fix bounds check in error recovery.
</pre>
-<h3 id="2010-08-11">2010-08-11</h3>
+<h2 id="2010-08-11">2010-08-11</h2>
<pre>
This release introduces some package changes. You may need to change your
@@ -1940,22 +1949,22 @@ matching substrings. The following methods are deprecated:
ExecuteString (use FindStringSubmatchIndex)
MatchStrings(use FindStringSubmatch)
MatchSlices (use FindSubmatch)
- AllMatches (use FindAll; note that n<0 means 'all matches'; was n<=0)
- AllMatchesString (use FindAllString; note that n<0 means 'all matches'; was n<=0)
+ AllMatches (use FindAll; note that n<0 means 'all matches'; was n<=0)
+ AllMatchesString (use FindAllString; note that n<0 means 'all matches'; was n<=0)
(Plus there are ten new methods you didn't know you wanted.)
Please update your code to use the new routines before the next release.
An image.Image now has a Bounds rectangle, where previously it ranged
from (0, 0) to (Width, Height). Loops that previously looked like:
- for y := 0; y < img.Height(); y++ {
- for x := 0; x < img.Width(); x++ {
+ for y := 0; y < img.Height(); y++ {
+ for x := 0; x < img.Width(); x++ {
// Do something with img.At(x, y)
}
}
should instead be:
b := img.Bounds()
- for y := b.Min.Y; y < b.Max.Y; y++ {
- for x := b.Min.X; x < b.Max.X; x++ {
+ for y := b.Min.Y; y < b.Max.Y; y++ {
+ for x := b.Min.X; x < b.Max.X; x++ {
// Do something with img.At(x, y)
}
}
@@ -1987,7 +1996,7 @@ Other changes:
* test/peano: use directly recursive type def.
</pre>
-<h3 id="2010-08-04">2010-08-04</h3>
+<h2 id="2010-08-04">2010-08-04</h2>
<pre>
This release includes a change to os.Open (and co.). The file permission
@@ -2021,7 +2030,7 @@ Other changes:
fix bug involving spaces in header keys (thanks Bill Neubauer).
</pre>
-<h3 id="2010-07-29">2010-07-29</h3>
+<h2 id="2010-07-29">2010-07-29</h2>
<pre>
* 5g: more soft float support and several bugfixes.
@@ -2074,7 +2083,7 @@ Other changes:
* utf16(windows): fix cyclic dependency when testing (thanks Peter Mundy).
</pre>
-<h3 id="2010-07-14">2010-07-14</h3>
+<h2 id="2010-07-14">2010-07-14</h2>
<pre>
This release includes a package change. In container/vector, the Iter method
@@ -2111,7 +2120,7 @@ Other changes:
* windows: append .exe to binary names (thanks Joe Poirier).
</pre>
-<h3 id="2010-07-01">2010-07-01</h3>
+<h2 id="2010-07-01">2010-07-01</h2>
<pre>
This release includes some package changes that may require changes to
@@ -2169,7 +2178,7 @@ Other changes:
* x509: support non-self-signed certs.
</pre>
-<h3 id="2010-06-21">2010-06-21</h3>
+<h2 id="2010-06-21">2010-06-21</h2>
<pre>
This release includes a language change. The "..." function parameter form is
@@ -2215,7 +2224,7 @@ Other changes:
* syslog: use local network for tests.
</pre>
-<h3 id="2010-06-09">2010-06-09</h3>
+<h2 id="2010-06-09">2010-06-09</h2>
<pre>
This release contains many fixes and improvements, including several
@@ -2262,7 +2271,7 @@ format-driven (fmt.Scanf) scanners for all basic types.
* vector: type-specific Do functions now take f(type) (thanks Michael Hoisie).
</pre>
-<h3 id="2010-05-27">2010-05-27</h3>
+<h2 id="2010-05-27">2010-05-27</h2>
<pre>
A sizeable release, including standard library improvements and a slew of
@@ -2330,7 +2339,7 @@ preparing for Google I/O.
* template: regularize name lookups of interfaces, pointers, and methods.
</pre>
-<h3 id="2010-05-04">2010-05-04</h3>
+<h2 id="2010-05-04">2010-05-04</h2>
<pre>
In this release we renamed the Windows OS target from 'mingw' to 'windows'.
@@ -2343,7 +2352,7 @@ If you are currently building for 'mingw' you should set GOOS=windows instead.
add bitwise methods for Int (thanks Evan Shaw).
* bytes: Change IndexAny to look for UTF-8 encoded characters.
* darwin: bsdthread_create can fail; print good error.
-* fmt: %T missing print <nil> for nil (thanks Christopher Wedgwood).
+* fmt: %T missing print <nil> for nil (thanks Christopher Wedgwood).
* gc: many fixes.
* misc/cgo/gmp: fix bug in SetString.
* net: fix resolv.conf EOF without newline bug (thanks Christopher Wedgwood).
@@ -2358,7 +2367,7 @@ If you are currently building for 'mingw' you should set GOOS=windows instead.
* xml: allow text segments to end at EOF.
</pre>
-<h3 id="2010-04-27">2010-04-27</h3>
+<h2 id="2010-04-27">2010-04-27</h2>
<pre>
This release includes a new Codelab that illustrates the construction of a
@@ -2421,7 +2430,7 @@ Other changes:
new "innerxml" tag to collect inner XML.
</pre>
-<h3 id="2010-04-13">2010-04-13</h3>
+<h2 id="2010-04-13">2010-04-13</h2>
<pre>
This release contains many changes:
@@ -2457,7 +2466,7 @@ This release contains many changes:
* xgb: move from the main repository to http://code.google.com/p/x-go-binding/
</pre>
-<h3 id="2010-03-30">2010-03-30</h3>
+<h2 id="2010-03-30">2010-03-30</h2>
<pre>
This release contains three language changes:
@@ -2519,7 +2528,7 @@ Other changes:
use io.ReadByter in place of local readByter (thanks Raif S. Naffah).
</pre>
-<h3 id="2010-03-22">2010-03-22</h3>
+<h2 id="2010-03-22">2010-03-22</h2>
<pre>
With this release we announce the launch of the Go Blog:
@@ -2554,7 +2563,7 @@ This release contains some new packages and functionality, and many fixes:
* websocket: use URL.RawPath to construct WebSocket-Location: header.
</pre>
-<h3 id="2010-03-15">2010-03-15</h3>
+<h2 id="2010-03-15">2010-03-15</h2>
<pre>
This release includes a language change: support for complex numbers.
@@ -2592,7 +2601,7 @@ This release also includes the goinstall command-line tool.
* template: add ParseFile, MustParseFile.
</pre>
-<h3 id="2010-03-04">2010-03-04</h3>
+<h2 id="2010-03-04">2010-03-04</h2>
<pre>
There is one language change: the ability to convert a string to []byte or
@@ -2621,7 +2630,7 @@ Other changes and fixes:
* tests: an Eratosthenesque concurrent prime sieve (thanks Anh Hai Trinh)
</pre>
-<h3 id="2010-02-23">2010-02-23</h3>
+<h2 id="2010-02-23">2010-02-23</h2>
<pre>
This release is mainly bug fixes and a little new code.
@@ -2646,7 +2655,7 @@ xml: allow unquoted attribute values in non-Strict mode (thanks Amrut Joshi)
treat bool as value in Unmarshal (thanks Michael Hoisie)
</pre>
-<h3 id="2010-02-17">2010-02-17</h3>
+<h2 id="2010-02-17">2010-02-17</h2>
<pre>
There are two small language changes:
@@ -2677,7 +2686,7 @@ Other changes and fixes:
* syscall: make signature of Umask on OS X, FreeBSD match Linux. (thanks Giles Lean)
</pre>
-<h3 id="2010-02-04">2010-02-04</h3>
+<h2 id="2010-02-04">2010-02-04</h2>
<pre>
There is one language change: support for ...T parameters:
@@ -2711,10 +2720,10 @@ You can now check build status on various platforms at the Go Dashboard:
allow any scalar type in xml.Unmarshal
</pre>
-<h3 id="2010-01-27">2010-01-27</h3>
+<h2 id="2010-01-27">2010-01-27</h2>
<pre>
-There are two small language changes: the meaning of chan <- chan int
+There are two small language changes: the meaning of chan <- chan int
is now defined, and functions returning functions do not need to
parenthesize the result type.
@@ -2741,7 +2750,7 @@ os: allow FQDN in Hostname test (thanks Icarus Sparry)
reflect: garbage collection bug in Call
runtime: demo of Go on raw (emulated) hw in runtime/pchw,
performance fix on OS X
-spec: clarify meaning of chan <- chan int,
+spec: clarify meaning of chan <- chan int,
func() func() int is allowed now,
define ... T (not yet implemented)
template: can use interface values
@@ -2751,7 +2760,7 @@ xgb: support for authenticated connections (thanks Firmansyah Adiputra)
xml: add Escape (thanks Stephen Weinberg)
</pre>
-<h3 id="2010-01-13">2010-01-13</h3>
+<h2 id="2010-01-13">2010-01-13</h2>
<pre>
This release is mainly bug fixes with a little new code.
@@ -2791,7 +2800,7 @@ test/bench: updated timings
time: new Format, Parse functions
</pre>
-<h3 id="2010-01-05">2010-01-05</h3>
+<h2 id="2010-01-05">2010-01-05</h2>
<pre>
This release is mainly bug fixes. There are no language changes.
@@ -2814,7 +2823,7 @@ There is now a public road map, in the repository and online
at <a href="http://golang.org/doc/devel/roadmap.html">http://golang.org/doc/devel/roadmap.html</a>.
</pre>
-<h3 id="2009-12-22">2009-12-22</h3>
+<h2 id="2009-12-22">2009-12-22</h2>
<pre>
Since the last release there has been one large syntactic change to
@@ -2868,7 +2877,7 @@ xml: better mapping of tag names to Go identifiers (thanks Kei Son),
better handling of unexpected EOF (thanks Arvindh Rajesh Tamilmani)
</pre>
-<h3 id="2009-12-09">2009-12-09</h3>
+<h2 id="2009-12-09">2009-12-09</h2>
<pre>
Since the last release there are two changes to the language:
diff --git a/doc/install.html b/doc/install.html
index b989416..2256123 100644
--- a/doc/install.html
+++ b/doc/install.html
@@ -136,7 +136,7 @@ and make sure the <code>go</code> directory does not exist.
Then check out the repository:</p>
<pre>
-$ hg clone -r release https://go.googlecode.com/hg/ go
+$ hg clone -u release https://go.googlecode.com/hg/ go
</pre>
<h2 id="install">Install Go</h2>
diff --git a/lib/codereview/codereview.py b/lib/codereview/codereview.py
index bfa69fc..36d7df1 100644
--- a/lib/codereview/codereview.py
+++ b/lib/codereview/codereview.py
@@ -112,6 +112,7 @@ defaultcc = None
contributors = {}
missing_codereview = None
real_rollback = None
+releaseBranch = None
#######################################################################
# RE: UNICODE STRING HANDLING
@@ -1049,7 +1050,7 @@ def change(ui, repo, *pats, **opts):
if missing_codereview:
return missing_codereview
-
+
dirty = {}
if len(pats) > 0 and GoodCLName(pats[0]):
name = pats[0]
@@ -1062,6 +1063,8 @@ def change(ui, repo, *pats, **opts):
if not cl.local and (opts["stdin"] or not opts["stdout"]):
return "cannot change non-local CL " + name
else:
+ if repo[None].branch() != "default":
+ return "cannot run hg change outside default branch"
name = "new"
cl = CL("new")
dirty[cl] = True
@@ -1154,7 +1157,9 @@ def clpatch(ui, repo, clname, **opts):
Submitting an imported patch will keep the original author's
name as the Author: line but add your own name to a Committer: line.
"""
- return clpatch_or_undo(ui, repo, clname, opts)
+ if repo[None].branch() != "default":
+ return "cannot run hg clpatch outside default branch"
+ return clpatch_or_undo(ui, repo, clname, opts, mode="clpatch")
def undo(ui, repo, clname, **opts):
"""undo the effect of a CL
@@ -1163,7 +1168,66 @@ def undo(ui, repo, clname, **opts):
After creating the CL, opens the CL text for editing so that
you can add the reason for the undo to the description.
"""
- return clpatch_or_undo(ui, repo, clname, opts, undo=True)
+ if repo[None].branch() != "default":
+ return "cannot run hg undo outside default branch"
+ return clpatch_or_undo(ui, repo, clname, opts, mode="undo")
+
+def release_apply(ui, repo, clname, **opts):
+ """apply a CL to the release branch
+
+ Creates a new CL copying a previously committed change
+ from the main branch to the release branch.
+ The current client must either be clean or already be in
+ the release branch.
+
+ The release branch must be created by starting with a
+ clean client, disabling the code review plugin, and running:
+
+ hg update weekly.YYYY-MM-DD
+ hg branch release-branch.rNN
+ hg commit -m 'create release-branch.rNN'
+ hg push --new-branch
+
+ Then re-enable the code review plugin.
+
+ People can test the release branch by running
+
+ hg update release-branch.rNN
+
+ in a clean client. To return to the normal tree,
+
+ hg update default
+
+ Move changes since the weekly into the release branch
+ using hg release-apply followed by the usual code review
+ process and hg submit.
+
+ When it comes time to tag the release, record the
+ final long-form tag of the release-branch.rNN
+ in the *default* branch's .hgtags file. That is, run
+
+ hg update default
+
+ and then edit .hgtags as you would for a weekly.
+
+ """
+ c = repo[None]
+ if not releaseBranch:
+ return "no active release branches"
+ if c.branch() != releaseBranch:
+ if c.modified() or c.added() or c.removed():
+ raise util.Abort("uncommitted local changes - cannot switch branches")
+ err = hg.clean(repo, releaseBranch)
+ if err:
+ return err
+ try:
+ err = clpatch_or_undo(ui, repo, clname, opts, mode="backport")
+ if err:
+ raise util.Abort(err)
+ except Exception, e:
+ hg.clean(repo, "default")
+ raise e
+ return None
def rev2clname(rev):
# Extract CL name from revision description.
@@ -1185,15 +1249,24 @@ undoFooter = """
»»»
"""
+backportHeader = """[%s] %s
+
+««« CL %s / %s
+"""
+
+backportFooter = """
+»»»
+"""
+
# Implementation of clpatch/undo.
-def clpatch_or_undo(ui, repo, clname, opts, undo=False):
+def clpatch_or_undo(ui, repo, clname, opts, mode):
if missing_codereview:
return missing_codereview
- if undo:
+ if mode == "undo" or mode == "backport":
if hgversion < '1.4':
# Don't have cmdutil.match (see implementation of sync command).
- return "hg is too old to run hg undo - update to 1.4 or newer"
+ return "hg is too old to run hg %s - update to 1.4 or newer" % mode
# Find revision in Mercurial repository.
# Assume CL number is 7+ decimal digits.
@@ -1227,8 +1300,19 @@ def clpatch_or_undo(ui, repo, clname, opts, undo=False):
# Create fresh CL and start with patch that would reverse the change.
vers = short(rev.node())
cl = CL("new")
- cl.desc = (undoHeader % (clname, vers)) + rev.description() + undoFooter
- patch = RunShell(["hg", "diff", "--git", "-r", vers + ":" + short(rev.parents()[0].node())])
+ desc = rev.description()
+ if mode == "undo":
+ cl.desc = (undoHeader % (clname, vers)) + desc + undoFooter
+ else:
+ cl.desc = (backportHeader % (releaseBranch, line1(desc), clname, vers)) + desc + undoFooter
+ v1 = vers
+ v0 = short(rev.parents()[0].node())
+ if mode == "undo":
+ arg = v1 + ":" + v0
+ else:
+ vers = v0
+ arg = v0 + ":" + v1
+ patch = RunShell(["hg", "diff", "--git", "-r", arg])
else: # clpatch
cl, vers, patch, err = DownloadCL(ui, repo, clname)
@@ -1249,10 +1333,10 @@ def clpatch_or_undo(ui, repo, clname, opts, undo=False):
if id != vers:
patch, err = portPatch(repo, patch, vers, id)
if err != "":
- return "codereview issue %s is out of date: %s" % (clname, err)
+ return "codereview issue %s is out of date: %s (%s->%s)" % (clname, err, vers, id)
argv = ["hgpatch"]
- if opts["no_incoming"]:
+ if opts["no_incoming"] or mode == "backport":
argv += ["--checksync=false"]
try:
cmd = subprocess.Popen(argv, shell=False, stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=None, close_fds=sys.platform != "win32")
@@ -1271,7 +1355,7 @@ def clpatch_or_undo(ui, repo, clname, opts, undo=False):
if extra:
ui.warn("warning: these files were listed in the patch but not changed:\n\t" + "\n\t".join(extra) + "\n")
cl.Flush(ui, repo)
- if undo:
+ if mode == "undo":
err = EditCL(ui, repo, cl)
if err != "":
return "CL created, but error editing: " + err
@@ -1506,7 +1590,7 @@ def reposetup(ui, repo):
def CheckContributor(ui, repo, user=None):
set_status("checking CONTRIBUTORS file")
- _, userline = FindContributor(ui, repo, user, warn=False)
+ user, userline = FindContributor(ui, repo, user, warn=False)
if not userline:
raise util.Abort("cannot find %s in CONTRIBUTORS" % (user,))
return userline
@@ -1524,7 +1608,7 @@ def FindContributor(ui, repo, user=None, warn=True):
if user not in contributors:
if warn:
ui.warn("warning: cannot find %s in CONTRIBUTORS\n" % (user,))
- return None, None
+ return user, None
user, email = contributors[user]
return email, "%s <%s>" % (user, email)
@@ -1650,6 +1734,14 @@ def submit(ui, repo, *pats, **opts):
if not cl.copied_from:
EditDesc(cl.name, closed=True, private=cl.private)
cl.Delete(ui, repo)
+
+ c = repo[None]
+ if c.branch() == releaseBranch and not c.modified() and not c.added() and not c.removed():
+ ui.write("switching from %s to default branch.\n" % releaseBranch)
+ err = hg.clean(repo, "default")
+ if err:
+ return err
+ return None
def sync(ui, repo, **opts):
"""synchronize with remote repository
@@ -1822,6 +1914,15 @@ cmdtable = {
] + commands.walkopts,
"[-r reviewer] [--cc cc] [change# | file ...]"
),
+ "^release-apply": (
+ release_apply,
+ [
+ ('', 'ignore_hgpatch_failure', None, 'create CL metadata even if hgpatch fails'),
+ ('', 'no_incoming', None, 'disable check for incoming changes'),
+ ],
+ "change#"
+ ),
+ # TODO: release-start, release-tag, weekly-tag
"^submit": (
submit,
review_opts + [
@@ -2263,6 +2364,19 @@ def RietveldSetup(ui, repo):
upload_options.email = "test at example.com"
rpc = None
+
+ global releaseBranch
+ tags = repo.branchtags().keys()
+ if 'release-branch.r100' in tags:
+ # NOTE(rsc): This tags.sort is going to get the wrong
+ # answer when comparing release-branch.r99 with
+ # release-branch.r100. If we do ten releases a year
+ # that gives us 4 years before we have to worry about this.
+ raise util.Abort('tags.sort needs to be fixed for release-branch.r100')
+ tags.sort()
+ for t in tags:
+ if t.startswith('release-branch.'):
+ releaseBranch = t
#######################################################################
# http://codereview.appspot.com/static/upload.py, heavily edited.
diff --git a/src/Make.cmd b/src/Make.cmd
index e769e30..26c3ca2 100644
--- a/src/Make.cmd
+++ b/src/Make.cmd
@@ -25,7 +25,7 @@ _go_.$O: $(GOFILES) $(PREREQ)
install: $(TARGDIR)/$(TARG)
$(TARGDIR)/$(TARG): $(TARG)
- cp -f $(TARG) $(TARGDIR)
+ mkdir -p $(TARGDIR) && cp -f $(TARG) $(TARGDIR)
CLEANFILES+=$(TARG) _test _testmain.go
diff --git a/src/cmd/5a/lex.c b/src/cmd/5a/lex.c
index dbee365..a04cda2 100644
--- a/src/cmd/5a/lex.c
+++ b/src/cmd/5a/lex.c
@@ -50,7 +50,7 @@ void
main(int argc, char *argv[])
{
char *p;
- int nout, nproc, i, c;
+ int c;
thechar = '5';
thestring = "arm";
@@ -94,46 +94,10 @@ main(int argc, char *argv[])
print("usage: %ca [-options] file.s\n", thechar);
errorexit();
}
- if(argc > 1 && systemtype(Windows)){
- print("can't assemble multiple files on windows\n");
+ if(argc > 1){
+ print("can't assemble multiple files\n");
errorexit();
}
- if(argc > 1 && !systemtype(Windows)) {
- nproc = 1;
- if(p = getenv("NPROC"))
- nproc = atol(p); /* */
- c = 0;
- nout = 0;
- for(;;) {
- Waitmsg *w;
-
- while(nout < nproc && argc > 0) {
- i = fork();
- if(i < 0) {
- fprint(2, "fork: %r\n");
- errorexit();
- }
- if(i == 0) {
- print("%s:\n", *argv);
- if(assemble(*argv))
- errorexit();
- exits(0);
- }
- nout++;
- argc--;
- argv++;
- }
- w = wait();
- if(w == nil) {
- if(c)
- errorexit();
- exits(0);
- }
- if(w->msg[0])
- c++;
- nout--;
- }
- }
if(assemble(argv[0]))
errorexit();
exits(0);
@@ -142,7 +106,7 @@ main(int argc, char *argv[])
int
assemble(char *file)
{
- char *ofile, incfile[20], *p;
+ char *ofile, *p;
int i, of;
ofile = alloc(strlen(file)+3); // +3 for .x\0 (x=thechar)
@@ -167,15 +131,6 @@ assemble(char *file)
} else
outfile = "/dev/null";
}
- p = getenv("INCLUDE");
- if(p) {
- setinclude(p);
- } else {
- if(systemtype(Plan9)) {
- sprint(incfile,"/%s/include", thestring);
- setinclude(strdup(incfile));
- }
- }
of = create(outfile, OWRITE, 0664);
if(of < 0) {
diff --git a/src/cmd/6a/lex.c b/src/cmd/6a/lex.c
index 37144c8..b4c7d0c 100644
--- a/src/cmd/6a/lex.c
+++ b/src/cmd/6a/lex.c
@@ -56,7 +56,7 @@ void
main(int argc, char *argv[])
{
char *p;
- int nout, nproc, i, c;
+ int c;
thechar = '6';
thestring = "amd64";
@@ -96,46 +96,10 @@ main(int argc, char *argv[])
print("usage: %ca [-options] file.s\n", thechar);
errorexit();
}
- if(argc > 1 && systemtype(Windows)){
- print("can't assemble multiple files on windows\n");
+ if(argc > 1){
+ print("can't assemble multiple files\n");
errorexit();
}
- if(argc > 1 && !systemtype(Windows)) {
- nproc = 1;
- if(p = getenv("NPROC"))
- nproc = atol(p); /* */
- c = 0;
- nout = 0;
- for(;;) {
- Waitmsg *w;
-
- while(nout < nproc && argc > 0) {
- i = fork();
- if(i < 0) {
- fprint(2, "fork: %r\n");
- errorexit();
- }
- if(i == 0) {
- print("%s:\n", *argv);
- if(assemble(*argv))
- errorexit();
- exits(0);
- }
- nout++;
- argc--;
- argv++;
- }
- w = wait();
- if(w == nil) {
- if(c)
- errorexit();
- exits(0);
- }
- if(w->msg[0])
- c++;
- nout--;
- }
- }
if(assemble(argv[0]))
errorexit();
exits(0);
@@ -144,7 +108,7 @@ main(int argc, char *argv[])
int
assemble(char *file)
{
- char *ofile, incfile[20], *p;
+ char *ofile, *p;
int i, of;
ofile = alloc(strlen(file)+3); // +3 for .x\0 (x=thechar)
@@ -169,15 +133,6 @@ assemble(char *file)
} else
outfile = "/dev/null";
}
- p = getenv("INCLUDE");
- if(p) {
- setinclude(p);
- } else {
- if(systemtype(Plan9)) {
- sprint(incfile,"/%s/include", thestring);
- setinclude(strdup(incfile));
- }
- }
of = create(outfile, OWRITE, 0664);
if(of < 0) {
diff --git a/src/cmd/8a/lex.c b/src/cmd/8a/lex.c
index ca18b69..0788618 100644
--- a/src/cmd/8a/lex.c
+++ b/src/cmd/8a/lex.c
@@ -56,7 +56,7 @@ void
main(int argc, char *argv[])
{
char *p;
- int nout, nproc, i, c;
+ int c;
thechar = '8';
thestring = "386";
@@ -96,46 +96,10 @@ main(int argc, char *argv[])
print("usage: %ca [-options] file.s\n", thechar);
errorexit();
}
- if(argc > 1 && systemtype(Windows)){
- print("can't assemble multiple files on windows\n");
+ if(argc > 1){
+ print("can't assemble multiple files\n");
errorexit();
}
- if(argc > 1 && !systemtype(Windows)) {
- nproc = 1;
- if(p = getenv("NPROC"))
- nproc = atol(p); /* */
- c = 0;
- nout = 0;
- for(;;) {
- Waitmsg *w;
-
- while(nout < nproc && argc > 0) {
- i = fork();
- if(i < 0) {
- fprint(2, "fork: %r\n");
- errorexit();
- }
- if(i == 0) {
- print("%s:\n", *argv);
- if(assemble(*argv))
- errorexit();
- exits(0);
- }
- nout++;
- argc--;
- argv++;
- }
- w = wait();
- if(w == nil) {
- if(c)
- errorexit();
- exits(0);
- }
- if(w->msg[0])
- c++;
- nout--;
- }
- }
if(assemble(argv[0]))
errorexit();
exits(0);
@@ -144,7 +108,7 @@ main(int argc, char *argv[])
int
assemble(char *file)
{
- char *ofile, incfile[20], *p;
+ char *ofile, *p;
int i, of;
ofile = alloc(strlen(file)+3); // +3 for .x\0 (x=thechar)
@@ -169,15 +133,6 @@ assemble(char *file)
} else
outfile = "/dev/null";
}
- p = getenv("INCLUDE");
- if(p) {
- setinclude(p);
- } else {
- if(systemtype(Plan9)) {
- sprint(incfile,"/%s/include", thestring);
- setinclude(strdup(incfile));
- }
- }
of = create(outfile, OWRITE, 0664);
if(of < 0) {
diff --git a/src/cmd/cc/lex.c b/src/cmd/cc/lex.c
index dba8ff6..71cc89b 100644
--- a/src/cmd/cc/lex.c
+++ b/src/cmd/cc/lex.c
@@ -88,7 +88,7 @@ void
main(int argc, char *argv[])
{
char **defs, *p;
- int nproc, nout, i, c, ndef;
+ int c, ndef;
ensuresymb(NSYMB);
memset(debug, 0, sizeof(debug));
@@ -142,51 +142,10 @@ main(int argc, char *argv[])
print("usage: %cc [-options] files\n", thechar);
errorexit();
}
- if(argc > 1 && systemtype(Windows)){
- print("can't compile multiple files on windows\n");
+ if(argc > 1){
+ print("can't compile multiple files\n");
errorexit();
}
- if(argc > 1 && !systemtype(Windows)) {
- nproc = 1;
- /*
- * if we're writing acid to standard output, don't compile
- * concurrently, to avoid interleaving output.
- */
- if(((!debug['a'] && !debug['q'] && !debug['Q']) || debug['n']) &&
- (p = getenv("NPROC")) != nil)
- nproc = atol(p); /* */
- c = 0;
- nout = 0;
- for(;;) {
- Waitmsg *w;
-
- while(nout < nproc && argc > 0) {
- i = fork();
- if(i < 0) {
- print("cannot create a process\n");
- errorexit();
- }
- if(i == 0) {
- fprint(2, "%s:\n", *argv);
- if (compile(*argv, defs, ndef))
- errorexit();
- exits(0);
- }
- nout++;
- argc--;
- argv++;
- }
- w = wait();
- if(w == nil) {
- if(c)
- errorexit();
- exits(0);
- }
- if(w->msg[0])
- c++;
- nout--;
- }
- }
if(argc == 0)
c = compile("stdin", defs, ndef);
@@ -201,7 +160,7 @@ main(int argc, char *argv[])
int
compile(char *file, char **defs, int ndef)
{
- char *ofile, incfile[20];
+ char *ofile;
char *p, **av, opt[256];
int i, c, fd[2];
static int first = 1;
@@ -236,15 +195,6 @@ compile(char *file, char **defs, int ndef)
outfile = "/dev/null";
}
- if(p = getenv("INCLUDE")) {
- setinclude(p);
- } else {
- if(systemtype(Plan9)) {
- sprint(incfile, "/%s/include", thestring);
- setinclude(strdup(incfile));
- setinclude("/sys/include");
- }
- }
if (first)
Binit(&diagbuf, 1, OWRITE);
/*
diff --git a/src/cmd/prof/gopprof b/src/cmd/prof/gopprof
index 8fa00cb..8863fc6 100755
--- a/src/cmd/prof/gopprof
+++ b/src/cmd/prof/gopprof
@@ -2880,17 +2880,18 @@ sub FetchSymbols {
my @toask = @pcs;
while (@toask > 0) {
my $n = @toask;
- if ($n > 49) { $n = 49; }
+ # NOTE(rsc): Limiting the number of PCs requested per round
+ # used to be necessary, but I think it was a bug in
+ # debug/pprof/symbol's implementation. Leaving here
+ # in case I am wrong.
+ # if ($n > 49) { $n = 49; }
my @thisround = @toask[0..$n];
-my $t = @toask;
-print STDERR "$n $t\n";
@toask = @toask[($n+1)..(@toask-1)];
my $post_data = join("+", sort((map {"0x" . "$_"} @thisround)));
open(POSTFILE, ">$main::tmpfile_sym");
print POSTFILE $post_data;
close(POSTFILE);
-print STDERR "SYMBL!\n";
my $url = SymbolPageURL();
$url = ResolveRedirectionForCurl($url);
my $command_line = "$CURL -sd '\@$main::tmpfile_sym' '$url'";
diff --git a/src/pkg/compress/flate/deflate.go b/src/pkg/compress/flate/deflate.go
index e5b2bea..a02a5e8 100644
--- a/src/pkg/compress/flate/deflate.go
+++ b/src/pkg/compress/flate/deflate.go
@@ -143,10 +143,18 @@ func (d *compressor) fillWindow(index int) (int, os.Error) {
d.blockStart = math.MaxInt32
}
for i, h := range d.hashHead {
- d.hashHead[i] = max(h-wSize, -1)
+ v := h - wSize
+ if v < -1 {
+ v = -1
+ }
+ d.hashHead[i] = v
}
for i, h := range d.hashPrev {
- d.hashPrev[i] = max(h-wSize, -1)
+ v := -h - wSize
+ if v < -1 {
+ v = -1
+ }
+ d.hashPrev[i] = v
}
}
count, err := d.r.Read(d.window[d.windowEnd:])
@@ -177,10 +185,18 @@ func (d *compressor) writeBlock(tokens []token, index int, eof bool) os.Error {
// Try to find a match starting at index whose length is greater than prevSize.
// We only look at chainCount possibilities before giving up.
func (d *compressor) findMatch(pos int, prevHead int, prevLength int, lookahead int) (length, offset int, ok bool) {
- win := d.window[0 : pos+min(maxMatchLength, lookahead)]
+ minMatchLook := maxMatchLength
+ if lookahead < minMatchLook {
+ minMatchLook = lookahead
+ }
+
+ win := d.window[0 : pos+minMatchLook]
// We quit when we get a match that's at least nice long
- nice := min(d.niceMatch, len(win)-pos)
+ nice := len(win) - pos
+ if d.niceMatch < nice {
+ nice = d.niceMatch
+ }
// If we've got a match that's good enough, only look in 1/4 the chain.
tries := d.maxChainLength
@@ -344,9 +360,12 @@ Loop:
}
prevLength := length
prevOffset := offset
- minIndex := max(index-maxOffset, 0)
length = minMatchLength - 1
offset = 0
+ minIndex := index - maxOffset
+ if minIndex < 0 {
+ minIndex = 0
+ }
if chainHead >= minIndex &&
(isFastDeflate && lookahead > minMatchLength-1 ||
diff --git a/src/pkg/http/pprof/pprof.go b/src/pkg/http/pprof/pprof.go
index bc79e21..917c7f8 100644
--- a/src/pkg/http/pprof/pprof.go
+++ b/src/pkg/http/pprof/pprof.go
@@ -26,6 +26,7 @@ package pprof
import (
"bufio"
+ "bytes"
"fmt"
"http"
"os"
@@ -88,10 +89,14 @@ func Profile(w http.ResponseWriter, r *http.Request) {
func Symbol(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", "text/plain; charset=utf-8")
+ // We have to read the whole POST body before
+ // writing any output. Buffer the output here.
+ var buf bytes.Buffer
+
// We don't know how many symbols we have, but we
// do have symbol information. Pprof only cares whether
// this number is 0 (no symbols available) or > 0.
- fmt.Fprintf(w, "num_symbols: 1\n")
+ fmt.Fprintf(&buf, "num_symbols: 1\n")
var b *bufio.Reader
if r.Method == "POST" {
@@ -109,14 +114,19 @@ func Symbol(w http.ResponseWriter, r *http.Request) {
if pc != 0 {
f := runtime.FuncForPC(uintptr(pc))
if f != nil {
- fmt.Fprintf(w, "%#x %s\n", pc, f.Name())
+ fmt.Fprintf(&buf, "%#x %s\n", pc, f.Name())
}
}
// Wait until here to check for err; the last
// symbol will have an err because it doesn't end in +.
if err != nil {
+ if err != os.EOF {
+ fmt.Fprintf(&buf, "reading request: %v\n", err)
+ }
break
}
}
+
+ w.Write(buf.Bytes())
}
diff --git a/src/pkg/http/transfer.go b/src/pkg/http/transfer.go
index 98c32ba..0fa8bed 100644
--- a/src/pkg/http/transfer.go
+++ b/src/pkg/http/transfer.go
@@ -439,9 +439,29 @@ type body struct {
hdr interface{} // non-nil (Response or Request) value means read trailer
r *bufio.Reader // underlying wire-format reader for the trailer
closing bool // is the connection to be closed after reading body?
+ closed bool
+}
+
+// ErrBodyReadAfterClose is returned when reading a Request Body after
+// the body has been closed. This typically happens when the body is
+// read after an HTTP Handler calls WriteHeader or Write on its
+// ResponseWriter.
+var ErrBodyReadAfterClose = os.NewError("http: invalid Read on closed request Body")
+
+func (b *body) Read(p []byte) (n int, err os.Error) {
+ if b.closed {
+ return 0, ErrBodyReadAfterClose
+ }
+ return b.Reader.Read(p)
}
func (b *body) Close() os.Error {
+ if b.closed {
+ return nil
+ }
+ defer func() {
+ b.closed = true
+ }()
if b.hdr == nil && b.closing {
// no trailer and closing the connection next.
// no point in reading to EOF.
diff --git a/src/pkg/image/image.go b/src/pkg/image/image.go
index 5f398a3..222d21a 100644
--- a/src/pkg/image/image.go
+++ b/src/pkg/image/image.go
@@ -51,6 +51,13 @@ func (p *RGBA) Set(x, y int, c Color) {
p.Pix[y*p.Stride+x] = toRGBAColor(c).(RGBAColor)
}
+func (p *RGBA) SetRGBA(x, y int, c RGBAColor) {
+ if !p.Rect.Contains(Point{x, y}) {
+ return
+ }
+ p.Pix[y*p.Stride+x] = c
+}
+
// Opaque scans the entire image and returns whether or not it is fully opaque.
func (p *RGBA) Opaque() bool {
if p.Rect.Empty() {
@@ -103,6 +110,13 @@ func (p *RGBA64) Set(x, y int, c Color) {
p.Pix[y*p.Stride+x] = toRGBA64Color(c).(RGBA64Color)
}
+func (p *RGBA64) SetRGBA64(x, y int, c RGBA64Color) {
+ if !p.Rect.Contains(Point{x, y}) {
+ return
+ }
+ p.Pix[y*p.Stride+x] = c
+}
+
// Opaque scans the entire image and returns whether or not it is fully opaque.
func (p *RGBA64) Opaque() bool {
if p.Rect.Empty() {
@@ -155,6 +169,13 @@ func (p *NRGBA) Set(x, y int, c Color) {
p.Pix[y*p.Stride+x] = toNRGBAColor(c).(NRGBAColor)
}
+func (p *NRGBA) SetNRGBA(x, y int, c NRGBAColor) {
+ if !p.Rect.Contains(Point{x, y}) {
+ return
+ }
+ p.Pix[y*p.Stride+x] = c
+}
+
// Opaque scans the entire image and returns whether or not it is fully opaque.
func (p *NRGBA) Opaque() bool {
if p.Rect.Empty() {
@@ -207,6 +228,13 @@ func (p *NRGBA64) Set(x, y int, c Color) {
p.Pix[y*p.Stride+x] = toNRGBA64Color(c).(NRGBA64Color)
}
+func (p *NRGBA64) SetNRGBA64(x, y int, c NRGBA64Color) {
+ if !p.Rect.Contains(Point{x, y}) {
+ return
+ }
+ p.Pix[y*p.Stride+x] = c
+}
+
// Opaque scans the entire image and returns whether or not it is fully opaque.
func (p *NRGBA64) Opaque() bool {
if p.Rect.Empty() {
@@ -252,13 +280,20 @@ func (p *Alpha) At(x, y int) Color {
return p.Pix[y*p.Stride+x]
}
-func (p *Alpha) Set(x, y int, c Color) {
+func (p *Alpha) Set(x, y int, c AlphaColor) {
if !p.Rect.Contains(Point{x, y}) {
return
}
p.Pix[y*p.Stride+x] = toAlphaColor(c).(AlphaColor)
}
+func (p *Alpha) SetAlpha(x, y int, c AlphaColor) {
+ if !p.Rect.Contains(Point{x, y}) {
+ return
+ }
+ p.Pix[y*p.Stride+x] = c
+}
+
// Opaque scans the entire image and returns whether or not it is fully opaque.
func (p *Alpha) Opaque() bool {
if p.Rect.Empty() {
@@ -311,6 +346,13 @@ func (p *Alpha16) Set(x, y int, c Color) {
p.Pix[y*p.Stride+x] = toAlpha16Color(c).(Alpha16Color)
}
+func (p *Alpha16) SetAlpha16(x, y int, c Alpha16Color) {
+ if !p.Rect.Contains(Point{x, y}) {
+ return
+ }
+ p.Pix[y*p.Stride+x] = c
+}
+
// Opaque scans the entire image and returns whether or not it is fully opaque.
func (p *Alpha16) Opaque() bool {
if p.Rect.Empty() {
@@ -363,6 +405,13 @@ func (p *Gray) Set(x, y int, c Color) {
p.Pix[y*p.Stride+x] = toGrayColor(c).(GrayColor)
}
+func (p *Gray) SetGray(x, y int, c GrayColor) {
+ if !p.Rect.Contains(Point{x, y}) {
+ return
+ }
+ p.Pix[y*p.Stride+x] = c
+}
+
// Opaque scans the entire image and returns whether or not it is fully opaque.
func (p *Gray) Opaque() bool {
return true
@@ -401,6 +450,13 @@ func (p *Gray16) Set(x, y int, c Color) {
p.Pix[y*p.Stride+x] = toGray16Color(c).(Gray16Color)
}
+func (p *Gray16) SetGray16(x, y int, c Gray16Color) {
+ if !p.Rect.Contains(Point{x, y}) {
+ return
+ }
+ p.Pix[y*p.Stride+x] = c
+}
+
// Opaque scans the entire image and returns whether or not it is fully opaque.
func (p *Gray16) Opaque() bool {
return true
diff --git a/src/pkg/image/jpeg/writer.go b/src/pkg/image/jpeg/writer.go
index 505cce0..52b3dc4 100644
--- a/src/pkg/image/jpeg/writer.go
+++ b/src/pkg/image/jpeg/writer.go
@@ -391,6 +391,31 @@ func toYCbCr(m image.Image, p image.Point, yBlock, cbBlock, crBlock *block) {
}
}
+// rgbaToYCbCr is a specialized version of toYCbCr for image.RGBA images.
+func rgbaToYCbCr(m *image.RGBA, p image.Point, yBlock, cbBlock, crBlock *block) {
+ b := m.Bounds()
+ xmax := b.Max.X - 1
+ ymax := b.Max.Y - 1
+ for j := 0; j < 8; j++ {
+ sj := p.Y + j
+ if sj > ymax {
+ sj = ymax
+ }
+ yoff := sj * m.Stride
+ for i := 0; i < 8; i++ {
+ sx := p.X + i
+ if sx > xmax {
+ sx = xmax
+ }
+ col := &m.Pix[yoff+sx]
+ yy, cb, cr := ycbcr.RGBToYCbCr(col.R, col.G, col.B)
+ yBlock[8*j+i] = int(yy)
+ cbBlock[8*j+i] = int(cb)
+ crBlock[8*j+i] = int(cr)
+ }
+ }
+}
+
// scale scales the 16x16 region represented by the 4 src blocks to the 8x8
// dst block.
func scale(dst *block, src *[4]block) {
@@ -431,13 +456,18 @@ func (e *encoder) writeSOS(m image.Image) {
prevDCY, prevDCCb, prevDCCr int
)
bounds := m.Bounds()
+ rgba, _ := m.(*image.RGBA)
for y := bounds.Min.Y; y < bounds.Max.Y; y += 16 {
for x := bounds.Min.X; x < bounds.Max.X; x += 16 {
for i := 0; i < 4; i++ {
xOff := (i & 1) * 8
yOff := (i & 2) * 4
p := image.Point{x + xOff, y + yOff}
- toYCbCr(m, p, &yBlock, &cbBlock[i], &crBlock[i])
+ if rgba != nil {
+ rgbaToYCbCr(rgba, p, &yBlock, &cbBlock[i], &crBlock[i])
+ } else {
+ toYCbCr(m, p, &yBlock, &cbBlock[i], &crBlock[i])
+ }
prevDCY = e.writeBlock(&yBlock, 0, prevDCY)
}
scale(&cBlock, &cbBlock)
diff --git a/src/pkg/image/jpeg/writer_test.go b/src/pkg/image/jpeg/writer_test.go
index 00922dd..7aec70f 100644
--- a/src/pkg/image/jpeg/writer_test.go
+++ b/src/pkg/image/jpeg/writer_test.go
@@ -8,6 +8,8 @@ import (
"bytes"
"image"
"image/png"
+ "io/ioutil"
+ "rand"
"os"
"testing"
)
@@ -85,3 +87,29 @@ func TestWriter(t *testing.T) {
}
}
}
+
+func BenchmarkEncodeRGBOpaque(b *testing.B) {
+ b.StopTimer()
+ img := image.NewRGBA(640, 480)
+ // Set all pixels to 0xFF alpha to force opaque mode.
+ bo := img.Bounds()
+ rnd := rand.New(rand.NewSource(123))
+ for y := bo.Min.Y; y < bo.Max.Y; y++ {
+ for x := bo.Min.X; x < bo.Max.X; x++ {
+ img.Set(x, y, image.RGBAColor{
+ uint8(rnd.Intn(256)),
+ uint8(rnd.Intn(256)),
+ uint8(rnd.Intn(256)),
+ 255})
+ }
+ }
+ if !img.Opaque() {
+ panic("expected image to be opaque")
+ }
+ b.SetBytes(640 * 480 * 4)
+ b.StartTimer()
+ options := &Options{Quality: 90}
+ for i := 0; i < b.N; i++ {
+ Encode(ioutil.Discard, img, options)
+ }
+}
diff --git a/src/pkg/image/png/reader.go b/src/pkg/image/png/reader.go
index b30a951..8c76afa 100644
--- a/src/pkg/image/png/reader.go
+++ b/src/pkg/image/png/reader.go
@@ -378,7 +378,7 @@ func (d *decoder) idatReader(idat io.Reader) (image.Image, os.Error) {
for x := 0; x < d.width; x += 8 {
b := cdat[x/8]
for x2 := 0; x2 < 8 && x+x2 < d.width; x2++ {
- gray.Set(x+x2, y, image.GrayColor{(b >> 7) * 0xff})
+ gray.SetGray(x+x2, y, image.GrayColor{(b >> 7) * 0xff})
b <<= 1
}
}
@@ -386,7 +386,7 @@ func (d *decoder) idatReader(idat io.Reader) (image.Image, os.Error) {
for x := 0; x < d.width; x += 4 {
b := cdat[x/4]
for x2 := 0; x2 < 4 && x+x2 < d.width; x2++ {
- gray.Set(x+x2, y, image.GrayColor{(b >> 6) * 0x55})
+ gray.SetGray(x+x2, y, image.GrayColor{(b >> 6) * 0x55})
b <<= 2
}
}
@@ -394,22 +394,22 @@ func (d *decoder) idatReader(idat io.Reader) (image.Image, os.Error) {
for x := 0; x < d.width; x += 2 {
b := cdat[x/2]
for x2 := 0; x2 < 2 && x+x2 < d.width; x2++ {
- gray.Set(x+x2, y, image.GrayColor{(b >> 4) * 0x11})
+ gray.SetGray(x+x2, y, image.GrayColor{(b >> 4) * 0x11})
b <<= 4
}
}
case cbG8:
for x := 0; x < d.width; x++ {
- gray.Set(x, y, image.GrayColor{cdat[x]})
+ gray.SetGray(x, y, image.GrayColor{cdat[x]})
}
case cbGA8:
for x := 0; x < d.width; x++ {
ycol := cdat[2*x+0]
- nrgba.Set(x, y, image.NRGBAColor{ycol, ycol, ycol, cdat[2*x+1]})
+ nrgba.SetNRGBA(x, y, image.NRGBAColor{ycol, ycol, ycol, cdat[2*x+1]})
}
case cbTC8:
for x := 0; x < d.width; x++ {
- rgba.Set(x, y, image.RGBAColor{cdat[3*x+0], cdat[3*x+1], cdat[3*x+2], 0xff})
+ rgba.SetRGBA(x, y, image.RGBAColor{cdat[3*x+0], cdat[3*x+1], cdat[3*x+2], 0xff})
}
case cbP1:
for x := 0; x < d.width; x += 8 {
@@ -456,25 +456,25 @@ func (d *decoder) idatReader(idat io.Reader) (image.Image, os.Error) {
}
case cbTCA8:
for x := 0; x < d.width; x++ {
- nrgba.Set(x, y, image.NRGBAColor{cdat[4*x+0], cdat[4*x+1], cdat[4*x+2], cdat[4*x+3]})
+ nrgba.SetNRGBA(x, y, image.NRGBAColor{cdat[4*x+0], cdat[4*x+1], cdat[4*x+2], cdat[4*x+3]})
}
case cbG16:
for x := 0; x < d.width; x++ {
ycol := uint16(cdat[2*x+0])<<8 | uint16(cdat[2*x+1])
- gray16.Set(x, y, image.Gray16Color{ycol})
+ gray16.SetGray16(x, y, image.Gray16Color{ycol})
}
case cbGA16:
for x := 0; x < d.width; x++ {
ycol := uint16(cdat[4*x+0])<<8 | uint16(cdat[4*x+1])
acol := uint16(cdat[4*x+2])<<8 | uint16(cdat[4*x+3])
- nrgba64.Set(x, y, image.NRGBA64Color{ycol, ycol, ycol, acol})
+ nrgba64.SetNRGBA64(x, y, image.NRGBA64Color{ycol, ycol, ycol, acol})
}
case cbTC16:
for x := 0; x < d.width; x++ {
rcol := uint16(cdat[6*x+0])<<8 | uint16(cdat[6*x+1])
gcol := uint16(cdat[6*x+2])<<8 | uint16(cdat[6*x+3])
bcol := uint16(cdat[6*x+4])<<8 | uint16(cdat[6*x+5])
- rgba64.Set(x, y, image.RGBA64Color{rcol, gcol, bcol, 0xffff})
+ rgba64.SetRGBA64(x, y, image.RGBA64Color{rcol, gcol, bcol, 0xffff})
}
case cbTCA16:
for x := 0; x < d.width; x++ {
@@ -482,7 +482,7 @@ func (d *decoder) idatReader(idat io.Reader) (image.Image, os.Error) {
gcol := uint16(cdat[8*x+2])<<8 | uint16(cdat[8*x+3])
bcol := uint16(cdat[8*x+4])<<8 | uint16(cdat[8*x+5])
acol := uint16(cdat[8*x+6])<<8 | uint16(cdat[8*x+7])
- nrgba64.Set(x, y, image.NRGBA64Color{rcol, gcol, bcol, acol})
+ nrgba64.SetNRGBA64(x, y, image.NRGBA64Color{rcol, gcol, bcol, acol})
}
}
diff --git a/src/pkg/image/png/writer.go b/src/pkg/image/png/writer.go
index 081d06b..2d593f6 100644
--- a/src/pkg/image/png/writer.go
+++ b/src/pkg/image/png/writer.go
@@ -263,7 +263,12 @@ func writeImage(w io.Writer, m image.Image, cb int) os.Error {
defer zw.Close()
bpp := 0 // Bytes per pixel.
+
+ // Used by fast paths for common image types
var paletted *image.Paletted
+ var rgba *image.RGBA
+ rgba, _ = m.(*image.RGBA)
+
switch cb {
case cbG8:
bpp = 1
@@ -303,12 +308,24 @@ func writeImage(w io.Writer, m image.Image, cb int) os.Error {
cr[0][x+1] = c.Y
}
case cbTC8:
- for x := b.Min.X; x < b.Max.X; x++ {
- // We have previously verified that the alpha value is fully opaque.
- r, g, b, _ := m.At(x, y).RGBA()
- cr[0][3*x+1] = uint8(r >> 8)
- cr[0][3*x+2] = uint8(g >> 8)
- cr[0][3*x+3] = uint8(b >> 8)
+ // We have previously verified that the alpha value is fully opaque.
+ cr0 := cr[0]
+ if rgba != nil {
+ yoff := y * rgba.Stride
+ xoff := 3*b.Min.X + 1
+ for _, color := range rgba.Pix[yoff+b.Min.X : yoff+b.Max.X] {
+ cr0[xoff] = color.R
+ cr0[xoff+1] = color.G
+ cr0[xoff+2] = color.B
+ xoff += 3
+ }
+ } else {
+ for x := b.Min.X; x < b.Max.X; x++ {
+ r, g, b, _ := m.At(x, y).RGBA()
+ cr0[3*x+1] = uint8(r >> 8)
+ cr0[3*x+2] = uint8(g >> 8)
+ cr0[3*x+3] = uint8(b >> 8)
+ }
}
case cbP8:
rowOffset := y * paletted.Stride
diff --git a/src/pkg/image/png/writer_test.go b/src/pkg/image/png/writer_test.go
index 4d9929f..6b054aa 100644
--- a/src/pkg/image/png/writer_test.go
+++ b/src/pkg/image/png/writer_test.go
@@ -5,10 +5,10 @@
package png
import (
- "bytes"
"fmt"
"image"
"io"
+ "io/ioutil"
"os"
"testing"
)
@@ -81,10 +81,42 @@ func BenchmarkEncodePaletted(b *testing.B) {
image.RGBAColor{0, 0, 0, 255},
image.RGBAColor{255, 255, 255, 255},
})
+ b.SetBytes(640 * 480 * 1)
b.StartTimer()
- buffer := new(bytes.Buffer)
for i := 0; i < b.N; i++ {
- buffer.Reset()
- Encode(buffer, img)
+ Encode(ioutil.Discard, img)
+ }
+}
+
+func BenchmarkEncodeRGBOpaque(b *testing.B) {
+ b.StopTimer()
+ img := image.NewRGBA(640, 480)
+ // Set all pixels to 0xFF alpha to force opaque mode.
+ bo := img.Bounds()
+ for y := bo.Min.Y; y < bo.Max.Y; y++ {
+ for x := bo.Min.X; x < bo.Max.X; x++ {
+ img.Set(x, y, image.RGBAColor{0, 0, 0, 255})
+ }
+ }
+ if !img.Opaque() {
+ panic("expected image to be opaque")
+ }
+ b.SetBytes(640 * 480 * 4)
+ b.StartTimer()
+ for i := 0; i < b.N; i++ {
+ Encode(ioutil.Discard, img)
+ }
+}
+
+func BenchmarkEncodeRGBA(b *testing.B) {
+ b.StopTimer()
+ img := image.NewRGBA(640, 480)
+ if img.Opaque() {
+ panic("expected image to not be opaque")
+ }
+ b.SetBytes(640 * 480 * 4)
+ b.StartTimer()
+ for i := 0; i < b.N; i++ {
+ Encode(ioutil.Discard, img)
}
}
diff --git a/src/pkg/mime/multipart/multipart.go b/src/pkg/mime/multipart/multipart.go
index e0b747c..60329fe 100644
--- a/src/pkg/mime/multipart/multipart.go
+++ b/src/pkg/mime/multipart/multipart.go
@@ -15,13 +15,13 @@ package multipart
import (
"bufio"
"bytes"
+ "fmt"
"io"
"io/ioutil"
"mime"
"net/textproto"
"os"
"regexp"
- "strings"
)
var headerRegexp *regexp.Regexp = regexp.MustCompile("^([a-zA-Z0-9\\-]+): *([^\r\n]+)")
@@ -79,25 +79,28 @@ func (p *Part) FormName() string {
// NewReader creates a new multipart Reader reading from r using the
// given MIME boundary.
func NewReader(reader io.Reader, boundary string) Reader {
+ b := []byte("\r\n--" + boundary + "--")
return &multiReader{
- boundary: boundary,
- dashBoundary: "--" + boundary,
- endLine: "--" + boundary + "--",
- bufReader: bufio.NewReader(reader),
+ bufReader: bufio.NewReader(reader),
+
+ nlDashBoundary: b[:len(b)-2],
+ dashBoundaryDash: b[2:],
+ dashBoundary: b[2 : len(b)-2],
}
}
// Implementation ....
-func newPart(mr *multiReader) (bp *Part, err os.Error) {
- bp = new(Part)
- bp.Header = make(map[string][]string)
- bp.mr = mr
- bp.buffer = new(bytes.Buffer)
- if err = bp.populateHeaders(); err != nil {
- bp = nil
+func newPart(mr *multiReader) (*Part, os.Error) {
+ bp := &Part{
+ Header: make(map[string][]string),
+ mr: mr,
+ buffer: new(bytes.Buffer),
}
- return
+ if err := bp.populateHeaders(); err != nil {
+ return nil, err
+ }
+ return bp, nil
}
func (bp *Part) populateHeaders() os.Error {
@@ -122,44 +125,49 @@ func (bp *Part) populateHeaders() os.Error {
// Read reads the body of a part, after its headers and before the
// next part (if any) begins.
func (bp *Part) Read(p []byte) (n int, err os.Error) {
- for {
- if bp.buffer.Len() >= len(p) {
- // Internal buffer of unconsumed data is large enough for
- // the read request. No need to parse more at the moment.
- break
- }
- if !bp.mr.ensureBufferedLine() {
- return 0, io.ErrUnexpectedEOF
- }
- if bp.mr.bufferedLineIsBoundary() {
- // Don't consume this line
- break
- }
+ if bp.buffer.Len() >= len(p) {
+ // Internal buffer of unconsumed data is large enough for
+ // the read request. No need to parse more at the moment.
+ return bp.buffer.Read(p)
+ }
+ peek, err := bp.mr.bufReader.Peek(4096) // TODO(bradfitz): add buffer size accessor
+ unexpectedEof := err == os.EOF
+ if err != nil && !unexpectedEof {
+ return 0, fmt.Errorf("multipart: Part Read: %v", err)
+ }
+ if peek == nil {
+ panic("nil peek buf")
+ }
- // Write all of this line, except the final CRLF
- s := *bp.mr.bufferedLine
- if strings.HasSuffix(s, "\r\n") {
- bp.mr.consumeLine()
- if !bp.mr.ensureBufferedLine() {
- return 0, io.ErrUnexpectedEOF
- }
- if bp.mr.bufferedLineIsBoundary() {
- // The final \r\n isn't ours. It logically belongs
- // to the boundary line which follows.
- bp.buffer.WriteString(s[0 : len(s)-2])
- } else {
- bp.buffer.WriteString(s)
- }
- break
- }
- if strings.HasSuffix(s, "\n") {
- bp.buffer.WriteString(s)
- bp.mr.consumeLine()
- continue
+ // Search the peek buffer for "\r\n--boundary". If found,
+ // consume everything up to the boundary. If not, consume only
+ // as much of the peek buffer as cannot hold the boundary
+ // string.
+ nCopy := 0
+ foundBoundary := false
+ if idx := bytes.Index(peek, bp.mr.nlDashBoundary); idx != -1 {
+ nCopy = idx
+ foundBoundary = true
+ } else if safeCount := len(peek) - len(bp.mr.nlDashBoundary); safeCount > 0 {
+ nCopy = safeCount
+ } else if unexpectedEof {
+ // If we've run out of peek buffer and the boundary
+ // wasn't found (and can't possibly fit), we must have
+ // hit the end of the file unexpectedly.
+ return 0, io.ErrUnexpectedEOF
+ }
+ if nCopy > 0 {
+ if _, err := io.Copyn(bp.buffer, bp.mr.bufReader, int64(nCopy)); err != nil {
+ return 0, err
}
- return 0, os.NewError("multipart parse error during Read; unexpected line: " + s)
}
- return bp.buffer.Read(p)
+ n, err = bp.buffer.Read(p)
+ if err == os.EOF && !foundBoundary {
+ // If the boundary hasn't been reached there's more to
+ // read, so don't pass through an EOF from the buffer
+ err = nil
+ }
+ return
}
func (bp *Part) Close() os.Error {
@@ -168,46 +176,12 @@ func (bp *Part) Close() os.Error {
}
type multiReader struct {
- boundary string
- dashBoundary string // --boundary
- endLine string // --boundary--
+ bufReader *bufio.Reader
- bufferedLine *string
-
- bufReader *bufio.Reader
currentPart *Part
partsRead int
-}
-func (mr *multiReader) eof() bool {
- return mr.bufferedLine == nil &&
- !mr.readLine()
-}
-
-func (mr *multiReader) readLine() bool {
- lineBytes, err := mr.bufReader.ReadSlice('\n')
- if err != nil {
- // TODO: care about err being EOF or not?
- return false
- }
- line := string(lineBytes)
- mr.bufferedLine = &line
- return true
-}
-
-func (mr *multiReader) bufferedLineIsBoundary() bool {
- return strings.HasPrefix(*mr.bufferedLine, mr.dashBoundary)
-}
-
-func (mr *multiReader) ensureBufferedLine() bool {
- if mr.bufferedLine == nil {
- return mr.readLine()
- }
- return true
-}
-
-func (mr *multiReader) consumeLine() {
- mr.bufferedLine = nil
+ nlDashBoundary, dashBoundaryDash, dashBoundary []byte
}
func (mr *multiReader) NextPart() (*Part, os.Error) {
@@ -215,13 +189,14 @@ func (mr *multiReader) NextPart() (*Part, os.Error) {
mr.currentPart.Close()
}
+ expectNewPart := false
for {
- if mr.eof() {
- return nil, io.ErrUnexpectedEOF
+ line, err := mr.bufReader.ReadSlice('\n')
+ if err != nil {
+ return nil, fmt.Errorf("multipart: NextPart: %v", err)
}
- if isBoundaryDelimiterLine(*mr.bufferedLine, mr.dashBoundary) {
- mr.consumeLine()
+ if mr.isBoundaryDelimiterLine(line) {
mr.partsRead++
bp, err := newPart(mr)
if err != nil {
@@ -231,55 +206,67 @@ func (mr *multiReader) NextPart() (*Part, os.Error) {
return bp, nil
}
- if hasPrefixThenNewline(*mr.bufferedLine, mr.endLine) {
- mr.consumeLine()
+ if hasPrefixThenNewline(line, mr.dashBoundaryDash) {
// Expected EOF (no error)
+ // TODO(bradfitz): should return an os.EOF error here, not using nil for errors
return nil, nil
}
+ if expectNewPart {
+ return nil, fmt.Errorf("multipart: expecting a new Part; got line %q", string(line))
+ }
+
if mr.partsRead == 0 {
// skip line
- mr.consumeLine()
continue
}
- return nil, os.NewError("Unexpected line in Next().")
+ if bytes.Equal(line, []byte("\r\n")) {
+ // Consume the "\r\n" separator between the
+ // body of the previous part and the boundary
+ // line we now expect will follow. (either a
+ // new part or the end boundary)
+ expectNewPart = true
+ continue
+ }
+
+ return nil, fmt.Errorf("multipart: unexpected line in Next(): %q", line)
}
panic("unreachable")
}
-func isBoundaryDelimiterLine(line, dashPrefix string) bool {
+func (mr *multiReader) isBoundaryDelimiterLine(line []byte) bool {
// http://tools.ietf.org/html/rfc2046#section-5.1
// The boundary delimiter line is then defined as a line
// consisting entirely of two hyphen characters ("-",
// decimal value 45) followed by the boundary parameter
// value from the Content-Type header field, optional linear
// whitespace, and a terminating CRLF.
- if !strings.HasPrefix(line, dashPrefix) {
+ if !bytes.HasPrefix(line, mr.dashBoundary) {
return false
}
- if strings.HasSuffix(line, "\r\n") {
- return onlyHorizontalWhitespace(line[len(dashPrefix) : len(line)-2])
+ if bytes.HasSuffix(line, []byte("\r\n")) {
+ return onlyHorizontalWhitespace(line[len(mr.dashBoundary) : len(line)-2])
}
// Violate the spec and also support newlines without the
// carriage return...
- if strings.HasSuffix(line, "\n") {
- return onlyHorizontalWhitespace(line[len(dashPrefix) : len(line)-1])
+ if bytes.HasSuffix(line, []byte("\n")) {
+ return onlyHorizontalWhitespace(line[len(mr.dashBoundary) : len(line)-1])
}
return false
}
-func onlyHorizontalWhitespace(s string) bool {
- for i := 0; i < len(s); i++ {
- if s[i] != ' ' && s[i] != '\t' {
+func onlyHorizontalWhitespace(s []byte) bool {
+ for _, b := range s {
+ if b != ' ' && b != '\t' {
return false
}
}
return true
}
-func hasPrefixThenNewline(s, prefix string) bool {
- return strings.HasPrefix(s, prefix) &&
- (len(s) == len(prefix)+1 && strings.HasSuffix(s, "\n") ||
- len(s) == len(prefix)+2 && strings.HasSuffix(s, "\r\n"))
+func hasPrefixThenNewline(s, prefix []byte) bool {
+ return bytes.HasPrefix(s, prefix) &&
+ (len(s) == len(prefix)+1 && s[len(s)-1] == '\n' ||
+ len(s) == len(prefix)+2 && bytes.HasSuffix(s, []byte("\r\n")))
}
diff --git a/src/pkg/mime/multipart/multipart_test.go b/src/pkg/mime/multipart/multipart_test.go
index f8f10f3..1624914 100644
--- a/src/pkg/mime/multipart/multipart_test.go
+++ b/src/pkg/mime/multipart/multipart_test.go
@@ -8,38 +8,37 @@ import (
"bytes"
"fmt"
"io"
+ "io/ioutil"
"json"
"os"
- "regexp"
"strings"
"testing"
)
func TestHorizontalWhitespace(t *testing.T) {
- if !onlyHorizontalWhitespace(" \t") {
+ if !onlyHorizontalWhitespace([]byte(" \t")) {
t.Error("expected pass")
}
- if onlyHorizontalWhitespace("foo bar") {
+ if onlyHorizontalWhitespace([]byte("foo bar")) {
t.Error("expected failure")
}
}
func TestBoundaryLine(t *testing.T) {
- boundary := "myBoundary"
- prefix := "--" + boundary
- if !isBoundaryDelimiterLine("--myBoundary\r\n", prefix) {
+ mr := NewReader(strings.NewReader(""), "myBoundary").(*multiReader)
+ if !mr.isBoundaryDelimiterLine([]byte("--myBoundary\r\n")) {
t.Error("expected")
}
- if !isBoundaryDelimiterLine("--myBoundary \r\n", prefix) {
+ if !mr.isBoundaryDelimiterLine([]byte("--myBoundary \r\n")) {
t.Error("expected")
}
- if !isBoundaryDelimiterLine("--myBoundary \n", prefix) {
+ if !mr.isBoundaryDelimiterLine([]byte("--myBoundary \n")) {
t.Error("expected")
}
- if isBoundaryDelimiterLine("--myBoundary bogus \n", prefix) {
+ if mr.isBoundaryDelimiterLine([]byte("--myBoundary bogus \n")) {
t.Error("expected fail")
}
- if isBoundaryDelimiterLine("--myBoundary bogus--", prefix) {
+ if mr.isBoundaryDelimiterLine([]byte("--myBoundary bogus--")) {
t.Error("expected fail")
}
}
@@ -79,7 +78,9 @@ func TestFormName(t *testing.T) {
}
}
-func TestMultipart(t *testing.T) {
+var longLine = strings.Repeat("\n\n\r\r\r\n\r\000", (1<<20)/8)
+
+func testMultipartBody() string {
testBody := `
This is a multi-part message. This line is ignored.
--MyBoundary
@@ -90,6 +91,10 @@ foo-bar: baz
My value
The end.
--MyBoundary
+name: bigsection
+
+[longline]
+--MyBoundary
Header1: value1b
HEADER2: value2b
foo-bar: bazb
@@ -102,11 +107,26 @@ Line 3 ends in a newline, but just one.
never read data
--MyBoundary--
+
+
+useless trailer
`
- testBody = regexp.MustCompile("\n").ReplaceAllString(testBody, "\r\n")
- bodyReader := strings.NewReader(testBody)
+ testBody = strings.Replace(testBody, "\n", "\r\n", -1)
+ return strings.Replace(testBody, "[longline]", longLine, 1)
+}
+
+func TestMultipart(t *testing.T) {
+ bodyReader := strings.NewReader(testMultipartBody())
+ testMultipart(t, bodyReader)
+}
+
+func TestMultipartSlowInput(t *testing.T) {
+ bodyReader := strings.NewReader(testMultipartBody())
+ testMultipart(t, &slowReader{bodyReader})
+}
- reader := NewReader(bodyReader, "MyBoundary")
+func testMultipart(t *testing.T, r io.Reader) {
+ reader := NewReader(r, "MyBoundary")
buf := new(bytes.Buffer)
// Part1
@@ -125,38 +145,64 @@ never read data
t.Error("Expected Foo-Bar: baz")
}
buf.Reset()
- io.Copy(buf, part)
+ if _, err := io.Copy(buf, part); err != nil {
+ t.Errorf("part 1 copy: %v", err)
+ }
expectEq(t, "My value\r\nThe end.",
buf.String(), "Value of first part")
// Part2
part, err = reader.NextPart()
+ if err != nil {
+ t.Fatalf("Expected part2; got: %v", err)
+ return
+ }
+ if e, g := "bigsection", part.Header.Get("name"); e != g {
+ t.Errorf("part2's name header: expected %q, got %q", e, g)
+ }
+ buf.Reset()
+ if _, err := io.Copy(buf, part); err != nil {
+ t.Errorf("part 2 copy: %v", err)
+ }
+ s := buf.String()
+ if len(s) != len(longLine) {
+ t.Errorf("part2 body expected long line of length %d; got length %d",
+ len(longLine), len(s))
+ }
+ if s != longLine {
+ t.Errorf("part2 long body didn't match")
+ }
+
+ // Part3
+ part, err = reader.NextPart()
if part == nil || err != nil {
- t.Error("Expected part2")
+ t.Error("Expected part3")
return
}
if part.Header.Get("foo-bar") != "bazb" {
t.Error("Expected foo-bar: bazb")
}
buf.Reset()
- io.Copy(buf, part)
+ if _, err := io.Copy(buf, part); err != nil {
+ t.Errorf("part 3 copy: %v", err)
+ }
expectEq(t, "Line 1\r\nLine 2\r\nLine 3 ends in a newline, but just one.\r\n",
- buf.String(), "Value of second part")
+ buf.String(), "body of part 3")
- // Part3
+ // Part4
part, err = reader.NextPart()
if part == nil || err != nil {
- t.Error("Expected part3 without errors")
+ t.Error("Expected part 4 without errors")
return
}
- // Non-existent part4
+ // Non-existent part5
part, err = reader.NextPart()
if part != nil {
- t.Error("Didn't expect a third part.")
+ t.Error("Didn't expect a fifth part.")
}
if err != nil {
- t.Errorf("Unexpected error getting third part: %v", err)
+ t.Errorf("Unexpected error getting fifth part: %v", err)
}
}
@@ -237,3 +283,36 @@ func TestLineLimit(t *testing.T) {
t.Errorf("expected to read < %d bytes; read %d", maxReadThreshold, mr.n)
}
}
+
+func TestMultipartTruncated(t *testing.T) {
+ testBody := `
+This is a multi-part message. This line is ignored.
+--MyBoundary
+foo-bar: baz
+
+Oh no, premature EOF!
+`
+ body := strings.Replace(testBody, "\n", "\r\n", -1)
+ bodyReader := strings.NewReader(body)
+ r := NewReader(bodyReader, "MyBoundary")
+
+ part, err := r.NextPart()
+ if err != nil {
+ t.Fatalf("didn't get a part")
+ }
+ _, err = io.Copy(ioutil.Discard, part)
+ if err != io.ErrUnexpectedEOF {
+ t.Fatalf("expected error io.ErrUnexpectedEOF; got %v", err)
+ }
+}
+
+type slowReader struct {
+ r io.Reader
+}
+
+func (s *slowReader) Read(p []byte) (int, os.Error) {
+ if len(p) == 0 {
+ return s.r.Read(p)
+ }
+ return s.r.Read(p[:1])
+}
diff --git a/src/pkg/reflect/all_test.go b/src/pkg/reflect/all_test.go
index 5bf6533..dee3f49 100644
--- a/src/pkg/reflect/all_test.go
+++ b/src/pkg/reflect/all_test.go
@@ -182,7 +182,9 @@ var valueTests = []pair{
}),
"struct { c chan *int32; d float32 }{chan *int32, 0}",
},
- {new(struct{ c func(chan *integer, *int8) }),
+ {new(struct {
+ c func(chan *integer, *int8)
+ }),
"struct { c func(chan *reflect_test.integer, *int8) }{func(chan *reflect_test.integer, *int8)(0)}",
},
{new(struct {
@@ -732,6 +734,24 @@ func TestDeepEqualComplexStructInequality(t *testing.T) {
}
}
+type UnexpT struct {
+ m map[int]int
+}
+
+func TestDeepEqualUnexportedMap(t *testing.T) {
+ // Check that DeepEqual can look at unexported fields.
+ x1 := UnexpT{map[int]int{1: 2}}
+ x2 := UnexpT{map[int]int{1: 2}}
+ if !DeepEqual(&x1, &x2) {
+ t.Error("DeepEqual(x1, x2) = false, want true")
+ }
+
+ y1 := UnexpT{map[int]int{2: 3}}
+ if DeepEqual(&x1, &y1) {
+ t.Error("DeepEqual(x1, y1) = true, want false")
+ }
+}
+
func check2ndField(x interface{}, offs uintptr, t *testing.T) {
s := ValueOf(x)
diff --git a/src/pkg/reflect/value.go b/src/pkg/reflect/value.go
index 6dffb07..2c2158a 100644
--- a/src/pkg/reflect/value.go
+++ b/src/pkg/reflect/value.go
@@ -958,14 +958,19 @@ func (v Value) MapIndex(key Value) Value {
iv.mustBe(Map)
typ := iv.typ.toType()
+ // Do not require ikey to be exported, so that DeepEqual
+ // and other programs can use all the keys returned by
+ // MapKeys as arguments to MapIndex. If either the map
+ // or the key is unexported, though, the result will be
+ // considered unexported.
+
ikey := key.internal()
- ikey.mustBeExported()
ikey = convertForAssignment("reflect.Value.MapIndex", nil, typ.Key(), ikey)
if iv.word == 0 {
return Value{}
}
- flag := iv.flag & flagRO
+ flag := (iv.flag | ikey.flag) & flagRO
elemType := typ.Elem()
elemWord, ok := mapaccess(iv.word, ikey.word)
if !ok {
diff --git a/src/pkg/runtime/linux/arm/sys.s b/src/pkg/runtime/linux/arm/sys.s
index d866b0e..2b5365b 100644
--- a/src/pkg/runtime/linux/arm/sys.s
+++ b/src/pkg/runtime/linux/arm/sys.s
@@ -258,11 +258,22 @@ TEXT cas<>(SB),7,$0
TEXT runtime·cas(SB),7,$0
MOVW valptr+0(FP), R2
MOVW old+4(FP), R0
+casagain:
MOVW new+8(FP), R1
BL cas<>(SB)
- MOVW $0, R0
- MOVW.CS $1, R0
+ BCC cascheck
+ MOVW $1, R0
RET
+cascheck:
+ // Kernel lies; double-check.
+ MOVW valptr+0(FP), R2
+ MOVW old+4(FP), R0
+ MOVW 0(R2), R3
+ CMP R0, R3
+ BEQ casagain
+ MOVW $0, R0
+ RET
+
TEXT runtime·casp(SB),7,$0
B runtime·cas(SB)
diff --git a/src/pkg/sync/atomic/asm_linux_arm.s b/src/pkg/sync/atomic/asm_linux_arm.s
index 5e7aea2..72f8d74 100644
--- a/src/pkg/sync/atomic/asm_linux_arm.s
+++ b/src/pkg/sync/atomic/asm_linux_arm.s
@@ -13,6 +13,12 @@
// LR = return address
// The function returns with CS true if the swap happened.
// http://lxr.linux.no/linux+v2.6.37.2/arch/arm/kernel/entry-armv.S#L850
+// On older kernels (before 2.6.24) the function can incorrectly
+// report a conflict, so we have to double-check the compare ourselves
+// and retry if necessary.
+//
+// http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=b49c0f24cf6744a3f4fd09289fe7cade349dead5
+//
TEXT cas<>(SB),7,$0
MOVW $0xffff0fc0, PC
@@ -23,12 +29,23 @@ TEXT ·CompareAndSwapInt32(SB),7,$0
TEXT ·CompareAndSwapUint32(SB),7,$0
MOVW valptr+0(FP), R2
MOVW old+4(FP), R0
+casagain:
MOVW new+8(FP), R1
BL cas<>(SB)
- MOVW $0, R0
- MOVW.CS $1, R0
+ BCC cascheck
+ MOVW $1, R0
+casret:
MOVW R0, ret+12(FP)
RET
+cascheck:
+ // Kernel lies; double-check.
+ MOVW valptr+0(FP), R2
+ MOVW old+4(FP), R0
+ MOVW 0(R2), R3
+ CMP R0, R3
+ BEQ casagain
+ MOVW $0, R0
+ B casret
TEXT ·CompareAndSwapUintptr(SB),7,$0
B ·CompareAndSwapUint32(SB)
diff --git a/src/pkg/xml/read.go b/src/pkg/xml/read.go
index 554b2a6..e2b349c 100644
--- a/src/pkg/xml/read.go
+++ b/src/pkg/xml/read.go
@@ -220,13 +220,10 @@ func (p *Parser) unmarshal(val reflect.Value, start *StartElement) os.Error {
}
if pv := val; pv.Kind() == reflect.Ptr {
- if pv.Pointer() == 0 {
- zv := reflect.Zero(pv.Type().Elem())
- pv.Set(zv.Addr())
- val = zv
- } else {
- val = pv.Elem()
+ if pv.IsNil() {
+ pv.Set(reflect.New(pv.Type().Elem()))
}
+ val = pv.Elem()
}
var (
diff --git a/src/pkg/xml/xml_test.go b/src/pkg/xml/xml_test.go
index a99c191..4e51cd5 100644
--- a/src/pkg/xml/xml_test.go
+++ b/src/pkg/xml/xml_test.go
@@ -329,46 +329,50 @@ func TestSyntax(t *testing.T) {
}
type allScalars struct {
- True1 bool
- True2 bool
- False1 bool
- False2 bool
- Int int
- Int8 int8
- Int16 int16
- Int32 int32
- Int64 int64
- Uint int
- Uint8 uint8
- Uint16 uint16
- Uint32 uint32
- Uint64 uint64
- Uintptr uintptr
- Float32 float32
- Float64 float64
- String string
+ True1 bool
+ True2 bool
+ False1 bool
+ False2 bool
+ Int int
+ Int8 int8
+ Int16 int16
+ Int32 int32
+ Int64 int64
+ Uint int
+ Uint8 uint8
+ Uint16 uint16
+ Uint32 uint32
+ Uint64 uint64
+ Uintptr uintptr
+ Float32 float32
+ Float64 float64
+ String string
+ PtrString *string
}
var all = allScalars{
- True1: true,
- True2: true,
- False1: false,
- False2: false,
- Int: 1,
- Int8: -2,
- Int16: 3,
- Int32: -4,
- Int64: 5,
- Uint: 6,
- Uint8: 7,
- Uint16: 8,
- Uint32: 9,
- Uint64: 10,
- Uintptr: 11,
- Float32: 13.0,
- Float64: 14.0,
- String: "15",
-}
+ True1: true,
+ True2: true,
+ False1: false,
+ False2: false,
+ Int: 1,
+ Int8: -2,
+ Int16: 3,
+ Int32: -4,
+ Int64: 5,
+ Uint: 6,
+ Uint8: 7,
+ Uint16: 8,
+ Uint32: 9,
+ Uint64: 10,
+ Uintptr: 11,
+ Float32: 13.0,
+ Float64: 14.0,
+ String: "15",
+ PtrString: &sixteen,
+}
+
+var sixteen = "16"
const testScalarsInput = `<allscalars>
<true1>true</true1>
@@ -390,6 +394,7 @@ const testScalarsInput = `<allscalars>
<float32>13.0</float32>
<float64>14.0</float64>
<string>15</string>
+ <ptrstring>16</ptrstring>
</allscalars>`
func TestAllScalars(t *testing.T) {
@@ -401,7 +406,7 @@ func TestAllScalars(t *testing.T) {
t.Fatal(err)
}
if !reflect.DeepEqual(a, all) {
- t.Errorf("expected %+v got %+v", all, a)
+ t.Errorf("have %+v want %+v", a, all)
}
}
--
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