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>
Sat, 30 Dec 2017 20:11:31 +0000 (21:11 +0100)
commitc1d31ccfac480d4dd8b6aa20f8f0e6e183d620c2
tree8a92daacd5082688cd69d6b9e3b884e5bc45f167
parentc8027878d024394fc59184ffdf7182fae0bf38dd
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>
(cherry picked from commit 770c934fa1635f4fadf5db4fc5cc5ad15d82455a)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
libavcodec/mdct_fixed.c
libavcodec/mdct_template.c