[FFmpeg-devel] [PATCH] mpeg4videodec: silence ubsan warning
michael at niedermayer.cc
Fri Jan 15 03:17:24 CET 2016
On Fri, Jan 15, 2016 at 12:30:28AM +0100, Andreas Cadhalpun wrote:
> s->ac_val is of type 'int16_t ', but points into a larger buffer.
> Here it is used as base pointer to find the correct position in the
> larger buffer by adding 's->block_index[n] * 16' and thus as 'int16_t *'.
> This fixes clang's ubsan runtime error: index out of bounds for type
> 'int16_t '
> Fixes: test_case.mp4
> Found-by: Tyson Smith <twsmith at mozilla.com>
> Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun at googlemail.com>
Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB
Republics decline into democracies and democracies degenerate into
despotisms. -- Aristotle
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