Disable Warnings from Google Test - c++

Question

I have just installed a fresh Visual Studio 16.10.3 and added Google Test to my command console app. Right of the bat, I get the following warnings:
Severity
Code
Description
Project
File
Line
Suppression State
Warning
C26812
The enum type 'testing::TestPartResult::Type' is unscoped. Prefer 'enum class' over 'enum' (Enum.3).
Tests
D:\C++\ConsoleTest\packages\Microsoft.googletest.v140.windesktop.msvcstl.static.rt-dyn.1.8.1.4\build\native\include\gtest\gtest-test-part.h
62
Warning
C26495
Variable 'testing::internal::Mutex::critical_section_' is uninitialized. Always initialize a member variable (type.6).
Tests
D:\C++\ConsoleTest\packages\Microsoft.googletest.v140.windesktop.msvcstl.static.rt-dyn.1.8.1.4\build\native\include\gtest\internal\gtest-port.h
1804
Warning
C26495
Variable 'testing::internal::Mutex::critical_section_init_phase_' is uninitialized. Always initialize a member variable (type.6).
Tests
D:\C++\ConsoleTest\packages\Microsoft.googletest.v140.windesktop.msvcstl.static.rt-dyn.1.8.1.4\build\native\include\gtest\internal\gtest-port.h
1804
Warning
C26495
Variable 'testing::internal::Mutex::owner_thread_id_' is uninitialized. Always initialize a member variable (type.6).
Tests
D:\C++\ConsoleTest\packages\Microsoft.googletest.v140.windesktop.msvcstl.static.rt-dyn.1.8.1.4\build\native\include\gtest\internal\gtest-port.h
1804
Warning
C26495
Variable 'testing::internal::Mutex::type_' is uninitialized. Always initialize a member variable (type.6).
Tests
D:\C++\ConsoleTest\packages\Microsoft.googletest.v140.windesktop.msvcstl.static.rt-dyn.1.8.1.4\build\native\include\gtest\internal\gtest-port.h
1804
Warning
C26812
The enum type 'testing::internal::Mutex::StaticConstructorSelector' is unscoped. Prefer 'enum class' over 'enum' (Enum.3).
Tests
D:\C++\ConsoleTest\packages\Microsoft.googletest.v140.windesktop.msvcstl.static.rt-dyn.1.8.1.4\build\native\include\gtest\internal\gtest-port.h
1804
I tried suppressing the warnings by surrounding #include "pch.h" as described here:
#pragma warning(push, 0)
#include "pch.h"
#pragma warning(pop)
However, that didn't work - instead, I only got an additional warning that
#pragma warning(pop): no matching '#pragma warning(push)' (C4193)
I also read the Broken Warnings Theory. Unfortunately, I have to admit that I do not understand it. I think this is the relevant section:
To suppress the warning in external headers, we need to both specify which headers are external and what the warning level in those headers should be:
cl.exe /experimental:external /external:I some_lib_dir /external:W0 /W4 my_prog.cpp
This would effectively get rid of any warning inside some_hdr.hpp while preserving warnings inside my_prog.cpp.
But where would I add these switches and what would be the correct path variable for googletest?
Thank you in advance for your help!

Answer 1

Instead of
suppressing the warnings by surrounding #include "pch.h"
you should use the warning pragma to surround both header files(gtest-port.h and gtest-test-part.h), which can be found in External Dependencies in Solution Explorer of the Visual Studio project. The detailed methods are as below.
Add the following code to the very beginning and end of gtest-port.h
#pragma warning( push )
#pragma warning( disable : 26495 )
#pragma warning( disable : 26812 )
// Original Code
#pragma warning( pop )
Similarly, add the following code to the very beginning and end of gtest-test-part.h
#pragma warning( push )
#pragma warning( disable : 26812 )
// Original Code
#pragma warning( pop )