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avformat/mxg: Use memmove() 

Fixes undefined behavior
Fixes: 1700002963a49da13542e0726b7bb758/unknown_unknown_292_658_cov_2141972066_m1.mxg

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2015-09-01 22:45:07 +02:00
parent 5d12d7de2c
commit c7c207aecd
1 changed files with 1 additions and 1 deletions
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2
libavformat/mxg.c
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@ -182,7 +182,7 @@ FF_ENABLE_DEPRECATION_WARNINGS
if (mxg->soi_ptr - mxg->buffer > mxg->cache_size) {
if (mxg->cache_size > 0) {
memcpy(mxg->buffer, mxg->buffer_ptr, mxg->cache_size);
memmove(mxg->buffer, mxg->buffer_ptr, mxg->cache_size);
}
mxg->buffer_ptr = mxg->buffer;