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authorMichael Niedermayer <michael@niedermayer.cc>2017-11-05 21:20:07 +0100
committerMichael Niedermayer <michael@niedermayer.cc>2017-12-30 21:11:31 +0100
commit8be48f1c9a4e6db2de6ea5d896d4d4eedc3ec638 (patch)
tree9fa91f6ed4c718922a2d74225d9b2c19f4718166
parentc1d31ccfac480d4dd8b6aa20f8f0e6e183d620c2 (diff)
downloadffmpeg-8be48f1c9a4e6db2de6ea5d896d4d4eedc3ec638.tar.gz
avcodec/aacdec_fixed: Fix undefined shift
Fixes: runtime error: left shift of negative value -801112064 Fixes: 3492/clusterfuzz-testcase-minimized-5784775283441664 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 fca198fb5bf42ba6b765b3f75b11738e4b4fc2a9) Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
-rw-r--r--libavcodec/aacdec_fixed.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/aacdec_fixed.c b/libavcodec/aacdec_fixed.c
index 1aaa6a2cb1..6ba0e63325 100644
--- a/libavcodec/aacdec_fixed.c
+++ b/libavcodec/aacdec_fixed.c
@@ -309,7 +309,7 @@ static av_always_inline void predict(PredictorState *ps, int *coef,
if (shift > 0) {
*coef += (unsigned)((pv.mant + (1 << (shift - 1))) >> shift);
} else
- *coef += (unsigned)(pv.mant << -shift);
+ *coef += (unsigned)pv.mant << -shift;
}
}