[Crosstoolchain-logs] [device-tree-compiler] 286/357: dtc: Enable and fix -Wpointer-arith warnings
Hector Oron
zumbi at moszumanska.debian.org
Thu Dec 8 17:06:24 UTC 2016
This is an automated email from the git hooks/post-receive script.
zumbi pushed a commit to branch upstream/1.3.x
in repository device-tree-compiler.
commit 36786db6154533b67d736b414ef63b4457009326
Author: David Gibson <david at gibson.dropbear.id.au>
Date: Mon Jul 7 10:10:48 2008 +1000
dtc: Enable and fix -Wpointer-arith warnings
This patch turns on the -Wpointer-arith option in the dtc Makefile,
and fixes the resulting warnings due to using (void *) in pointer
arithmetic. While convenient, pointer arithmetic on void * is not
portable, so it's better that we avoid it, particularly in libfdt.
Signed-off-by: David Gibson <david at gibson.dropbear.id.au>
---
Makefile | 2 +-
ftdump.c | 6 +++---
libfdt/fdt.c | 2 +-
libfdt/fdt_ro.c | 4 ++--
libfdt/fdt_rw.c | 49 ++++++++++++++++++++++++++----------------------
libfdt/fdt_sw.c | 2 +-
libfdt/fdt_wip.c | 2 +-
libfdt/libfdt_internal.h | 6 +++---
tests/incbin.c | 7 ++++---
tests/mangle-layout.c | 8 ++++----
tests/move_and_save.c | 2 +-
tests/nopulate.c | 7 +++----
tests/testutils.c | 2 +-
13 files changed, 52 insertions(+), 47 deletions(-)
diff --git a/Makefile b/Makefile
index 3f4a174..c20fc9e 100644
--- a/Makefile
+++ b/Makefile
@@ -16,7 +16,7 @@ LOCAL_VERSION =
CONFIG_LOCALVERSION =
CPPFLAGS = -I libfdt
-CFLAGS = -Wall -g -Os
+CFLAGS = -Wall -g -Os -Wpointer-arith
BISON = bison
LEX = flex
diff --git a/ftdump.c b/ftdump.c
index c8f4092..1f94a05 100644
--- a/ftdump.c
+++ b/ftdump.c
@@ -70,9 +70,9 @@ static void dump_blob(void *blob)
uint32_t off_dt = fdt32_to_cpu(bph->off_dt_struct);
uint32_t off_str = fdt32_to_cpu(bph->off_dt_strings);
struct fdt_reserve_entry *p_rsvmap =
- (struct fdt_reserve_entry *)(blob + off_mem_rsvmap);
- char *p_struct = blob + off_dt;
- char *p_strings = blob + off_str;
+ (struct fdt_reserve_entry *)((char *)blob + off_mem_rsvmap);
+ char *p_struct = (char *)blob + off_dt;
+ char *p_strings = (char *)blob + off_str;
uint32_t version = fdt32_to_cpu(bph->version);
uint32_t totalsize = fdt32_to_cpu(bph->totalsize);
uint32_t tag;
diff --git a/libfdt/fdt.c b/libfdt/fdt.c
index 0d16427..6b2ca1f 100644
--- a/libfdt/fdt.c
+++ b/libfdt/fdt.c
@@ -76,7 +76,7 @@ int fdt_check_header(const void *fdt)
const void *fdt_offset_ptr(const void *fdt, int offset, int len)
{
- const void *p;
+ const char *p;
if (fdt_version(fdt) >= 0x11)
if (((offset + len) < offset)
diff --git a/libfdt/fdt_ro.c b/libfdt/fdt_ro.c
index e55872f..2a6e905 100644
--- a/libfdt/fdt_ro.c
+++ b/libfdt/fdt_ro.c
@@ -408,10 +408,10 @@ int fdt_node_offset_by_phandle(const void *fdt, uint32_t phandle)
&phandle, sizeof(phandle));
}
-int _stringlist_contains(const void *strlist, int listlen, const char *str)
+int _stringlist_contains(const char *strlist, int listlen, const char *str)
{
int len = strlen(str);
- const void *p;
+ const char *p;
while (listlen >= len) {
if (memcmp(str, strlist, len+1) == 0)
diff --git a/libfdt/fdt_rw.c b/libfdt/fdt_rw.c
index ec0738c..0284a4f 100644
--- a/libfdt/fdt_rw.c
+++ b/libfdt/fdt_rw.c
@@ -94,13 +94,14 @@ static inline int _blob_data_size(void *fdt)
return fdt_off_dt_strings(fdt) + fdt_size_dt_strings(fdt);
}
-static int _blob_splice(void *fdt, void *p, int oldlen, int newlen)
+static int _blob_splice(void *fdt, void *splicepoint, int oldlen, int newlen)
{
- void *end = fdt + _blob_data_size(fdt);
+ char *p = splicepoint;
+ char *end = (char *)fdt + _blob_data_size(fdt);
if (((p + oldlen) < p) || ((p + oldlen) > end))
return -FDT_ERR_BADOFFSET;
- if ((end - oldlen + newlen) > (fdt + fdt_totalsize(fdt)))
+ if ((end - oldlen + newlen) > ((char *)fdt + fdt_totalsize(fdt)))
return -FDT_ERR_NOSPACE;
memmove(p + newlen, p + oldlen, end - p - oldlen);
return 0;
@@ -135,7 +136,8 @@ static int _blob_splice_struct(void *fdt, void *p,
static int _blob_splice_string(void *fdt, int newlen)
{
- void *p = fdt + fdt_off_dt_strings(fdt) + fdt_size_dt_strings(fdt);
+ void *p = (char *)fdt
+ + fdt_off_dt_strings(fdt) + fdt_size_dt_strings(fdt);
int err;
if ((err = _blob_splice(fdt, p, 0, newlen)))
@@ -338,7 +340,7 @@ int fdt_add_subnode_namelen(void *fdt, int parentoffset,
nh->tag = cpu_to_fdt32(FDT_BEGIN_NODE);
memset(nh->name, 0, ALIGN(namelen+1, FDT_TAGSIZE));
memcpy(nh->name, name, namelen);
- endtag = (uint32_t *)((void *)nh + nodelen - FDT_TAGSIZE);
+ endtag = (uint32_t *)((char *)nh + nodelen - FDT_TAGSIZE);
*endtag = cpu_to_fdt32(FDT_END_NODE);
return offset;
@@ -363,7 +365,7 @@ int fdt_del_node(void *fdt, int nodeoffset)
endoffset - nodeoffset, 0);
}
-static void _packblocks(const void *fdt, void *buf,
+static void _packblocks(const char *old, char *new,
int mem_rsv_size, int struct_size)
{
int mem_rsv_off, struct_off, strings_off;
@@ -372,17 +374,17 @@ static void _packblocks(const void *fdt, void *buf,
struct_off = mem_rsv_off + mem_rsv_size;
strings_off = struct_off + struct_size;
- memmove(buf + mem_rsv_off, fdt + fdt_off_mem_rsvmap(fdt), mem_rsv_size);
- fdt_set_off_mem_rsvmap(buf, mem_rsv_off);
+ memmove(new + mem_rsv_off, old + fdt_off_mem_rsvmap(old), mem_rsv_size);
+ fdt_set_off_mem_rsvmap(new, mem_rsv_off);
- memmove(buf + struct_off, fdt + fdt_off_dt_struct(fdt), struct_size);
- fdt_set_off_dt_struct(buf, struct_off);
- fdt_set_size_dt_struct(buf, struct_size);
+ memmove(new + struct_off, old + fdt_off_dt_struct(old), struct_size);
+ fdt_set_off_dt_struct(new, struct_off);
+ fdt_set_size_dt_struct(new, struct_size);
- memmove(buf + strings_off, fdt + fdt_off_dt_strings(fdt),
- fdt_size_dt_strings(fdt));
- fdt_set_off_dt_strings(buf, strings_off);
- fdt_set_size_dt_strings(buf, fdt_size_dt_strings(fdt));
+ memmove(new + strings_off, old + fdt_off_dt_strings(old),
+ fdt_size_dt_strings(old));
+ fdt_set_off_dt_strings(new, strings_off);
+ fdt_set_size_dt_strings(new, fdt_size_dt_strings(old));
}
int fdt_open_into(const void *fdt, void *buf, int bufsize)
@@ -390,7 +392,9 @@ int fdt_open_into(const void *fdt, void *buf, int bufsize)
int err;
int mem_rsv_size, struct_size;
int newsize;
- void *tmp;
+ const char *fdtstart = fdt;
+ const char *fdtend = fdtstart + fdt_totalsize(fdt);
+ char *tmp;
CHECK_HEADER(fdt);
@@ -423,12 +427,13 @@ int fdt_open_into(const void *fdt, void *buf, int bufsize)
if (bufsize < newsize)
return -FDT_ERR_NOSPACE;
- if (((buf + newsize) <= fdt)
- || (buf >= (fdt + fdt_totalsize(fdt)))) {
- tmp = buf;
- } else {
- tmp = (void *)fdt + fdt_totalsize(fdt);
- if ((tmp + newsize) > (buf + bufsize))
+ /* First attempt to build converted tree at beginning of buffer */
+ tmp = buf;
+ /* But if that overlaps with the old tree... */
+ if (((tmp + newsize) > fdtstart) && (tmp < fdtend)) {
+ /* Try right after the old tree instead */
+ tmp = (char *)fdtend;
+ if ((tmp + newsize) > ((char *)buf + bufsize))
return -FDT_ERR_NOSPACE;
}
diff --git a/libfdt/fdt_sw.c b/libfdt/fdt_sw.c
index df09876..92f8f0b 100644
--- a/libfdt/fdt_sw.c
+++ b/libfdt/fdt_sw.c
@@ -121,7 +121,7 @@ int fdt_add_reservemap_entry(void *fdt, uint64_t addr, uint64_t size)
if ((offset + sizeof(*re)) > fdt_totalsize(fdt))
return -FDT_ERR_NOSPACE;
- re = (struct fdt_reserve_entry *)(fdt + offset);
+ re = (struct fdt_reserve_entry *)((char *)fdt + offset);
re->address = cpu_to_fdt64(addr);
re->size = cpu_to_fdt64(size);
diff --git a/libfdt/fdt_wip.c b/libfdt/fdt_wip.c
index 88e24b8..ae6f536 100644
--- a/libfdt/fdt_wip.c
+++ b/libfdt/fdt_wip.c
@@ -76,7 +76,7 @@ static void nop_region(void *start, int len)
{
uint32_t *p;
- for (p = start; (void *)p < (start + len); p++)
+ for (p = start; (char *)p < ((char *)start + len); p++)
*p = cpu_to_fdt32(FDT_NOP);
}
diff --git a/libfdt/libfdt_internal.h b/libfdt/libfdt_internal.h
index f72e70d..2ba30db 100644
--- a/libfdt/libfdt_internal.h
+++ b/libfdt/libfdt_internal.h
@@ -72,7 +72,7 @@ int _fdt_node_end_offset(void *fdt, int nodeoffset);
static inline const void *_fdt_offset_ptr(const void *fdt, int offset)
{
- return fdt + fdt_off_dt_struct(fdt) + offset;
+ return (const char *)fdt + fdt_off_dt_struct(fdt) + offset;
}
static inline void *_fdt_offset_ptr_w(void *fdt, int offset)
@@ -82,8 +82,8 @@ static inline void *_fdt_offset_ptr_w(void *fdt, int offset)
static inline const struct fdt_reserve_entry *_fdt_mem_rsv(const void *fdt, int n)
{
- const struct fdt_reserve_entry *rsv_table =
- fdt + fdt_off_mem_rsvmap(fdt);
+ const struct fdt_reserve_entry *rsv_table = (struct fdt_reserve_entry *)
+ ((const char *)fdt + fdt_off_mem_rsvmap(fdt));
return rsv_table + n;
}
diff --git a/tests/incbin.c b/tests/incbin.c
index 2f8a55a..5ab3508 100644
--- a/tests/incbin.c
+++ b/tests/incbin.c
@@ -31,10 +31,10 @@
#define CHUNKSIZE 1024
-void *load_file(const char *name, int *len)
+char *load_file(const char *name, int *len)
{
FILE *f;
- void *buf = NULL;
+ char *buf = NULL;
int bufsize = 0, n;
*len = 0;
@@ -60,7 +60,8 @@ void *load_file(const char *name, int *len)
int main(int argc, char *argv[])
{
- void *fdt, *incbin;
+ void *fdt;
+ char *incbin;
int len;
test_init(argc, argv);
diff --git a/tests/mangle-layout.c b/tests/mangle-layout.c
index efd6aab..bd6ac40 100644
--- a/tests/mangle-layout.c
+++ b/tests/mangle-layout.c
@@ -31,7 +31,7 @@
#include "testdata.h"
struct bufstate {
- void *buf;
+ char *buf;
int size;
};
@@ -73,7 +73,7 @@ void add_block(struct bufstate *buf, int version, char block, const void *fdt)
case 'm':
/* Memory reserve map */
align = 8;
- src = fdt + fdt_off_mem_rsvmap(fdt);
+ src = (const char *)fdt + fdt_off_mem_rsvmap(fdt);
size = (fdt_num_mem_rsv(fdt) + 1)
* sizeof(struct fdt_reserve_entry);
break;
@@ -81,14 +81,14 @@ void add_block(struct bufstate *buf, int version, char block, const void *fdt)
case 't':
/* Structure block */
align = 4;
- src = fdt + fdt_off_dt_struct(fdt);
+ src = (const char *)fdt + fdt_off_dt_struct(fdt);
size = fdt_size_dt_struct(fdt);
break;
case 's':
/* Strings block */
align = 1;
- src = fdt + fdt_off_dt_strings(fdt);
+ src = (const char *)fdt + fdt_off_dt_strings(fdt);
size = fdt_size_dt_strings(fdt);
break;
default:
diff --git a/tests/move_and_save.c b/tests/move_and_save.c
index da73157..410ccb3 100644
--- a/tests/move_and_save.c
+++ b/tests/move_and_save.c
@@ -33,7 +33,7 @@
int main(int argc, char *argv[])
{
void *fdt, *fdt1, *fdt2, *fdt3;
- void *buf;
+ char *buf;
int shuntsize;
int bufsize;
int err;
diff --git a/tests/nopulate.c b/tests/nopulate.c
index 923ba2d..e56839a 100644
--- a/tests/nopulate.c
+++ b/tests/nopulate.c
@@ -30,7 +30,7 @@
#include "tests.h"
#include "testdata.h"
-int nopulate_struct(char *buf, const void *fdt)
+int nopulate_struct(char *buf, const char *fdt)
{
int offset, nextoffset = 0;
uint32_t tag;
@@ -42,7 +42,7 @@ int nopulate_struct(char *buf, const void *fdt)
offset = nextoffset;
tag = fdt_next_tag(fdt, offset, &nextoffset);
- memcpy(p, fdt + fdt_off_dt_struct(fdt) + offset,
+ memcpy(p, (const char *)fdt + fdt_off_dt_struct(fdt) + offset,
nextoffset - offset);
p += nextoffset - offset;
@@ -56,8 +56,7 @@ int nopulate_struct(char *buf, const void *fdt)
int main(int argc, char *argv[])
{
- void *fdt, *fdt2;
- void *buf;
+ char *fdt, *fdt2, *buf;
int newsize, struct_start, struct_end_old, struct_end_new, delta;
const char *inname;
char outname[PATH_MAX];
diff --git a/tests/testutils.c b/tests/testutils.c
index b4a3d90..b0a2230 100644
--- a/tests/testutils.c
+++ b/tests/testutils.c
@@ -200,7 +200,7 @@ void save_blob(const char *filename, void *fdt)
int fd;
int totalsize;
int offset;
- void *p;
+ char *p;
int ret;
fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC, 0666);
--
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