[Ffmpeg-devel] svn 6835 crash in mpeg12.c

[Michael Niedermayer]

Hi

On Sun, Oct 29, 2006 at 12:46:23PM -0800, Aaron Williams wrote:
> Hi
> 
> Michael Niedermayer wrote:
> > Hi
> >
> > On Sun, Oct 29, 2006 at 10:49:05PM +0300, Ismail Donmez wrote:
> >   
> >> Hi,
> >> 29 Eki 2006 Paz 20:43 tarihinde, Aaron Williams ??unlar?? yazm????t??: 
> >> [...]
> >>     
> >>> If I compile mpeg12.c with -O2 instead of -O3 then it seems to work
> >>> fine.  I am compiling with GCC 4.1.0 (SUSE Linux) for an Athlon64
> >>> (-farch=athlon64).
> >>>       
> >> You should file a gcc bug at gzz bugzilla.
> >>     
> >
> > but before you do that try make distclean and check with valgrid
> > that the -O2 code really is ok
> >
> > IMO we shouldnt randomly dump all not fully understood bugs into gcc bugzilla
> >
> > [...]
> >
> >   
> I am seeing a ton of valgrind errors with this release:
> 
> ==24793== Source and destination overlap in memcpy(0x5FB48E0, 0x5FB48E0, 88)
> ==24793==    at 0x4A220D3: memcpy (mc_replace_strmem.c:116)
> ==24793==    by 0x4724D5: avcodec_default_release_buffer (utils.c:346)

line 346 is    *buf= *last;
so this one looks like a gcc bug though its certainly unrelated to the
actual report

[...]

-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

In the past you could go to a library and read, borrow or copy any book
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