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avcodec/rangecoder: Do not increase the pointer beyond the buffer

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Fixes: undefined behavior

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2017-08-14 00:15:54 +02:00
parent f4544163b2
commit c359c51947
2 changed files with 7 additions and 2 deletions
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1
libavcodec/rangecoder.c
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@ -58,6 +58,7 @@ av_cold void ff_init_range_decoder(RangeCoder *c, const uint8_t *buf,
c->low = AV_RB16(c->bytestream);
c->bytestream += 2;
c->overread = 0;
if (c->low >= 0xFF00) {
c->low = 0xFF00;
c->bytestream_end = c->bytestream;