From 4db3a388ddef8799fa97e6e38dd8971ba2b25221 Mon Sep 17 00:00:00 2001
From: Vincent Rabaud <vrabaud@google.com>
Date: Tue, 11 Jan 2022 12:01:47 +0100
Subject: [PATCH] Fix a potential UBSAN error.

We only use that value as uint64_t below anyway.
---
 modules/core/src/matrix.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/modules/core/src/matrix.cpp b/modules/core/src/matrix.cpp
index 1deff6b450..be3dcc2608 100644
--- a/modules/core/src/matrix.cpp
+++ b/modules/core/src/matrix.cpp
@@ -269,7 +269,7 @@ void setSize( Mat& m, int _dims, const int* _sz, const size_t* _steps, bool auto
         else if( autoSteps )
         {
             m.step.p[i] = total;
-            int64 total1 = (int64)total*s;
+            uint64 total1 = (uint64)total*s;
             if( (uint64)total1 != (size_t)total1 )
                 CV_Error( CV_StsOutOfRange, "The total matrix size does not fit to \"size_t\" type" );
             total = (size_t)total1;