From 4cad001b049477078f33bf752f3fbc2448fc139f Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Sun, 21 May 2017 02:51:04 +0200 Subject: [PATCH] avcodec/aac_defines: Fix: runtime error: left shift of negative value -2 Fixes: 1716/clusterfuzz-testcase-minimized-4691012196761600 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer (cherry picked from commit c3547dcbc326474745f02a618e01848a293f3f92) Signed-off-by: Michael Niedermayer --- libavcodec/aac_defines.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/aac_defines.h b/libavcodec/aac_defines.h index eff63b347c..b417850838 100644 --- a/libavcodec/aac_defines.h +++ b/libavcodec/aac_defines.h @@ -45,7 +45,7 @@ typedef int AAC_SIGNE; #define Q30(x) (int)((x)*1073741824.0 + 0.5) #define Q31(x) (int)((x)*2147483648.0 + 0.5) #define RANGE15(x) x -#define GET_GAIN(x, y) (-(y) << (x)) + 1024 +#define GET_GAIN(x, y) (-(y) * (1 << (x))) + 1024 #define AAC_MUL16(x, y) (int)(((int64_t)(x) * (y) + 0x8000) >> 16) #define AAC_MUL26(x, y) (int)(((int64_t)(x) * (y) + 0x2000000) >> 26) #define AAC_MUL30(x, y) (int)(((int64_t)(x) * (y) + 0x20000000) >> 30)