From 932913f0b406814d9c374c5e1a5ab6aa45a53168 Mon Sep 17 00:00:00 2001
From: Paul B Mahol <onemda@gmail.com>
Date: Wed, 16 Oct 2019 18:06:47 +0200
Subject: avfilter/vf_edgedetect: fix undefined behaviour

Fixes #8287
---
 libavfilter/vf_edgedetect.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'libavfilter/vf_edgedetect.c')

diff --git a/libavfilter/vf_edgedetect.c b/libavfilter/vf_edgedetect.c
index 25424dbcce..a5614ea63b 100644
--- a/libavfilter/vf_edgedetect.c
+++ b/libavfilter/vf_edgedetect.c
@@ -216,7 +216,7 @@ static int get_rounded_direction(int gx, int gy)
 
         if (gx < 0)
             gx = -gx, gy = -gy;
-        gy <<= 16;
+        gy *= (1 << 16);
         tanpi8gx  =  27146 * gx;
         tan3pi8gx = 158218 * gx;
         if (gy > -tan3pi8gx && gy < -tanpi8gx)  return DIRECTION_45UP;
-- 
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