[opencv] 169/251: calib3d: fix invalid memory access

[Nobuhiro Iwamatsu]

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iwamatsu pushed a commit to annotated tag 3.3.0
in repository opencv.

commit 2e17251160761d48809c80ef9ea256143b7d06a9
Author: Alexander Alekhin <alexander.alekhin at intel.com>
Date:   Tue Jul 25 19:58:00 2017 +0300

    calib3d: fix invalid memory access
---
 modules/calib3d/src/stereobm.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/modules/calib3d/src/stereobm.cpp b/modules/calib3d/src/stereobm.cpp
index f6d8213..f6708c4 100644
--- a/modules/calib3d/src/stereobm.cpp
+++ b/modules/calib3d/src/stereobm.cpp
@@ -227,7 +227,7 @@ prefilterXSobel( const Mat& src, Mat& dst, int ftzero )
             v_int16x8 ftz2 = v_setall_s16((short)(ftzero*2));
             v_int16x8 z = v_setzero_s16();
 
-            for(; x <= size.width-8; x += 8 )
+            for(; x <= (size.width - 1) - 8; x += 8 )
             {
                 v_int16x8 s00 = v_reinterpret_as_s16(v_load_expand(srow0 + x + 1));
                 v_int16x8 s01 = v_reinterpret_as_s16(v_load_expand(srow0 + x - 1));

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