From 948b54763b6c851b2a0bec6702cd9c419065fdb6 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Tue, 23 May 2017 14:34:00 +0200 Subject: avcodec/lagarith: Fix runtime error: left shift of 1 by 31 places cannot be represented in type 'int' Fixes: 1764/clusterfuzz-testcase-minimized-5394243164045312 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavcodec/lagarith.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/lagarith.c b/libavcodec/lagarith.c index 1f4afc5312..860381746d 100644 --- a/libavcodec/lagarith.c +++ b/libavcodec/lagarith.c @@ -91,7 +91,7 @@ static uint32_t softfloat_mul(uint32_t x, uint64_t mantissa) uint64_t h = x * (mantissa >> 32); h += l >> 32; l &= 0xffffffff; - l += 1 << av_log2(h >> 21); + l += 1LL << av_log2(h >> 21); h += l >> 32; return h >> 20; } -- cgit v1.2.3