From 2dfb8c417891e0cc3670f8e0791ea0c7071314fe Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michael@niedermayer.cc>
Date: Sun, 23 Jul 2017 16:52:47 +0200
Subject: [PATCH] avcodec/aacdec_fixed: fix: left shift of negative value -1
Fixes: 2699/clusterfuzz-testcase-minimized-5631303862976512
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
libavcodec/aacdec_fixed.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavcodec/aacdec_fixed.c b/libavcodec/aacdec_fixed.c
index 2b340bd7625..ccfef7f6526 100644
--- a/libavcodec/aacdec_fixed.c
+++ b/libavcodec/aacdec_fixed.c
@@ -432,7 +432,7 @@ static void apply_independent_coupling_fixed(AACContext *ac,
else {
for (i = 0; i < len; i++) {
tmp = (int)(((int64_t)src[i] * c + (int64_t)0x1000000000) >> 37);
- dest[i] += tmp << shift;
+ dest[i] += tmp * (1 << shift);
}
}
}
--
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