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avcodec/bitstream: Don't check for undefined behaviour after it happened

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Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
(cherry picked from commit 5e196dac22)
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
This commit is contained in:
Andreas Rheinhardt 2020-06-25 15:10:35 +02:00
parent d8407afe02
commit 284fffa92f
1 changed files with 1 additions and 1 deletions
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2
libavcodec/bitstream.c
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@ -162,9 +162,9 @@ static int build_table(VLC *vlc, int table_nb_bits, int nb_codes,
uint32_t code;
volatile VLC_TYPE (* volatile table)[2]; // the double volatile is needed to prevent an internal compiler error in gcc 4.2
table_size = 1 << table_nb_bits;
if (table_nb_bits > 30)
return AVERROR(EINVAL);
table_size = 1 << table_nb_bits;
table_index = alloc_table(vlc, table_size, flags & INIT_VLC_USE_NEW_STATIC);
ff_dlog(NULL, "new table index=%d size=%d\n", table_index, table_size);
if (table_index < 0)