[FFmpeg-devel] Stack variables alignment check in libavcodec/dsputil.c
Tue Jul 31 09:07:57 CEST 2007
> > > > If this fails, some SSE optims will crash.
> > >
> > > Not neccesseraly. The variables on the stack could be properly aligned
> > > just by an accident.
> > I am facing such bugs on Windows. Some of the SSE code (which does
> > unaligned access) crashes. Like vorbis_inverse_coupling_sse.
> Threaded de/encoding is known broken on Windows, since the OS doesn't
> maintain the alignment upon thread entry. But otherwise I've never met
> with such crashes.
I do not have threading enabled. I am using GCC 3 something.
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