svn commit: r209122 - head/lib/libelf

Kai Wang kaiwang27 at gmail.com
Sun Jun 13 17:26:24 UTC 2010


On Sun, Jun 13, 2010 at 09:37:10AM -0700, Steve Kargl wrote:
> On Sun, Jun 13, 2010 at 10:58:50AM +0000, Kai Wang wrote:
> > Author: kaiw
> > Date: Sun Jun 13 10:58:50 2010
> > New Revision: 209122
> > URL: http://svn.freebsd.org/changeset/base/209122
> > 
> > Log:
> >   * Improve compatibility with existing application code by permitting the
> >     use of `elf_getbase()` on non-archive members. This change is needed
> >     for gcc LTO (-flto) to work properly.
> >   * Style fix: paranthesize returned values.
> >   * Document the current behaviour of `elf_getbase()`.
> >   
> >   Tested by:	gerald, Steve Kargl (original patch)
> >   Obtained from:	elftoolchain
> >   MFC after:	3 days
> > 
> > Modified:
> >   head/lib/libelf/elf_getbase.3
> >   head/lib/libelf/elf_getbase.c
> 
> Thanks.  Unfortunately without the patch to elf_update.c,
> gcc LTO will not work (ie., 'gcc -flto -o z a.o b.o' will
> segfault).  Any chance that the elf_update.c patch will be
> committed; possibly as a conditional compilation.

The patch to elf_update.c needs some more work before it can be
committed. We've concluded that our libelf is indeed overly strict
about data alignment inside sections, so the problem will be fixed
eventually. A ticket[1] has been created to track this issue.

Thanks,
Kai

[1] http://sourceforge.net/apps/trac/elftoolchain/ticket/264


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