Bug#634401: extundelete: FTBFS: extundelete.cc:963:47: error: invalid use of incomplete type 'struct opaque_ext2_group_desc'

Michael Prokop mika at debian.org
Sat Dec 31 12:23:17 UTC 2011


(original bugreport at the end of the mail, fullquote by intention)

I just investigated on this FTBFS issue.

The problem is that extundelete doesn't compile against e2fslibs-dev
versions >=1.42. Therefore extundelete was just removed from
Debian/testing, so if this bug can't be resolved then extundelete
sadly can't be shipped with the upcoming Debian stable release.

The responsible change in e2fslibs-dev is this one ("libext2fs: make
fs->group_desc opaque"):


The commit message talks about EXT2FS_OLD_32_COMPAT which should
provide compiling of "Old-style applications who don't want to
change their source code". Sadly EXT2FS_OLD_32_COMPAT wasn't
implemented in this commit nor in a following one.

The code of extundelete that's failing to compile is:


The issue was brought up on the mailinglist of extundelete a few
weeks ago, but there wasn't a reaction from upstream since then.

Eric and Theodore - any ideas what's the best way to resolve this
issue in the meanwhile?

thanks && regards,

* Lucas Nussbaum [Die Jul 19, 2011 at 12:01:33 +0200]:
> Source: extundelete
> Version: 0.2.0-1
> Severity: serious
> Tags: wheezy sid
> User: debian-qa at lists.debian.org
> Usertags: qa-ftbfs-20110718 qa-ftbfs
> Justification: FTBFS on amd64

> Hi,

> During a rebuild of all packages in sid, your package failed to build on
> amd64.

> Relevant part:
> > make[3]: Entering directory `/build/extundelete-m9SM_D/extundelete-0.2.0/src'
> > extundelete.cc: In function 'int load_super_block(ext2_filsys)':
> > extundelete.cc:963:47: error: invalid use of incomplete type 'struct opaque_ext2_group_desc'
> > /usr/include/ext2fs/ext2fs.h:211:8: error: forward declaration of 'struct opaque_ext2_group_desc'
> > extundelete.cc:963:47: error: no match for 'operator=' in '*(group_descriptor_table + ((long unsigned int)(((long unsigned int)n) * 32ul))) = * fs->struct_ext2_filsys::group_desc'
> > extundelete.cc:963:47: note: candidate is:
> > /usr/include/ext2fs/ext2_fs.h:136:8: note: ext2_group_desc& ext2_group_desc::operator=(const ext2_group_desc&)
> > /usr/include/ext2fs/ext2_fs.h:136:8: note:   no known conversion for argument 1 from 'opaque_ext2_group_desc' to 'const ext2_group_desc&'
> > make[3]: *** [extundelete-extundelete.o] Error 1

> The full build log is available from:
>    http://people.debian.org/~lucas/logs/2011/07/18/extundelete_0.2.0-1_lsid64.buildlog

> A list of current common problems and possible solutions is available at 
> http://wiki.debian.org/qa.debian.org/FTBFS . You're welcome to contribute!

> About the archive rebuild: The rebuild was done on about 50 AMD64 nodes
> of the Grid'5000 platform, using a clean chroot.  Internet was not
> accessible from the build systems.

> -- 
> | Lucas Nussbaum
> | lucas at lucas-nussbaum.net   http://www.lucas-nussbaum.net/ |
> | jabber: lucas at nussbaum.fr             GPG: 1024D/023B3F4F |

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