avcodec/vc1_pred: Fix invalid shift in scaleforsame()
authorMichael Niedermayer <michael@niedermayer.cc>
Wed, 10 Jul 2019 21:27:19 +0000 (23:27 +0200)
committerMichael Niedermayer <michael@niedermayer.cc>
Wed, 31 Jul 2019 18:35:07 +0000 (20:35 +0200)
commit6dfda35dd29d2e2a86554d2c05d957a09ab79b0c
tree9cf73f1a4d6eb721de2dd07aa670f387404adbe3
parentf31ed8f3b00ec7afe87092798bf0b397f6e19ed5
avcodec/vc1_pred: Fix invalid shift in scaleforsame()

Fixes: left shift of negative value -1
Fixes: 15531/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_VC1IMAGE_fuzzer-5759556258365440

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
libavcodec/vc1_pred.c