[FFmpeg-devel] [PATCH 04/19] snowdec: fix return value for small overreads.

Reimar Döffinger Reimar.Doeffinger at gmx.de
Sun Jul 29 17:58:53 CEST 2012

On Sun, Jul 29, 2012 at 05:41:04PM +0200, Nicolas George wrote:
> Le duodi 12 thermidor, an CCXX, Reimar Döffinger a écrit :
> > Maybe we should just handle that in the wrapper function?
> I hesitate about that. My opinion is that code that relies on small
> overreads is fragile, so it can be a good idea have a strict check for all
> decoders (that is patch #19, enabled only at assert-level 2), and add this
> kind of correction in decoders that are known to rely on overreads.

It would be possible to mark which decoders can validly overread.
Though I wonder, do those decoders really overread for valid, undamaged input?
That seems strange to me.
If it happens only for damaged input those decoders should probably mark
an error somehow.

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