From: ddzama <ddzama@opencascade.com>
Date: Thu, 31 Mar 2022 06:19:35 +0000 (+0300)
Subject: 0032916: Coding Rules - eliminate MSVS warning C26451 on VS2019/C++20 (Arithmetic... 
X-Git-Tag: V7_7_0_beta~132
X-Git-Url: http://git.dev.opencascade.org/gitweb/?a=commitdiff_plain;h=d31e5dbbb4da27d08e1a4d4faffd77d4ec6ed6a9;p=occt.git

0032916: Coding Rules - eliminate MSVS warning C26451 on VS2019/C++20 (Arithmetic overflow: Using operator '+' on a 4 byte value...)

Microsoft Visual Studio Professional 2019
Version 16.11.11
std=c++20

Get rid of `Warning C26451 Arithmetic overflow: Using operator '+' on a 4 byte value
and then casting the result to a 8 byte value.
Cast the value to the wider type before calling operator '+' to avoid overflow (io.2)`
---

diff --git a/src/QANCollection/QANCollection_Stl.cxx b/src/QANCollection/QANCollection_Stl.cxx
index c40c421e8d..656fbbfdbd 100644
--- a/src/QANCollection/QANCollection_Stl.cxx
+++ b/src/QANCollection/QANCollection_Stl.cxx
@@ -1115,7 +1115,7 @@ void TestPerformanceMapAccess(Draw_Interpretor& di)
     aTimer.Reset();
     aTimer.Start();
     {
-      for (Standard_Integer anIdx = 0; anIdx < 10000; ++anIdx)
+      for (size_t anIdx = 0; anIdx < 10000; ++anIdx)
       {
         if (aSet.find (aVec[anIdx + 1000]) == aSet.end())
           aResult = Standard_False;
@@ -1136,7 +1136,7 @@ void TestPerformanceMapAccess(Draw_Interpretor& di)
     aTimer.Reset();
     aTimer.Start();
     {
-      for (Standard_Integer anIdx = 0; anIdx < 10000; ++anIdx)
+      for (size_t anIdx = 0; anIdx < 10000; ++anIdx)
       {
         if (!aCollec->Contains (aVec[anIdx + 1000]))
           aResult = Standard_False;