avcodec/mdct_*: Fix integer overflow in addition in RESCALE()
authorMichael Niedermayer <michael@niedermayer.cc>
Sun, 5 Nov 2017 20:20:06 +0000 (21:20 +0100)
committerMichael Niedermayer <michael@niedermayer.cc>
Mon, 13 Nov 2017 18:54:20 +0000 (19:54 +0100)
commit770c934fa1635f4fadf5db4fc5cc5ad15d82455a
tree34796c6de23fbe7a8246f23c22e13910a6bbcc9e
parentc897a9285846b6a072b9650976afd4f091b7a71f
avcodec/mdct_*: Fix integer overflow in addition in RESCALE()

Fixes: runtime error: signed integer overflow: 1219998458 - -1469874012 cannot be represented in type 'int'
Fixes: 3443/clusterfuzz-testcase-minimized-5369987105554432

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