Unittest generates warning with C++17 regarding auto_ptr

[NeroBurner]

When compiling with C++17 enabled gcc throws the following warning:

[ 76%] Building CXX object CMakeFiles/utilities_unittest.dir/src/utilities_unittest.cc.obj
/usr/src/app/src/logging_unittest.cc: In function 'void TestDCHECK()':
/usr/src/app/src/logging_unittest.cc:575:3: warning: 'template<class> class std::auto_ptr' is deprecated [-Wdeprecated-declarations]
   auto_ptr<int64> sptr(new int64);
   ^~~~~~~~
In file included from /usr/lib/gcc/x86_64-w64-mingw32/7.3-win32/include/c++/bits/locale_conv.h:41:0,
                 from /usr/lib/gcc/x86_64-w64-mingw32/7.3-win32/include/c++/locale:43,
                 from /usr/lib/gcc/x86_64-w64-mingw32/7.3-win32/include/c++/iomanip:43,
                 from /usr/src/app/src/logging_unittest.cc:44:
/usr/lib/gcc/x86_64-w64-mingw32/7.3-win32/include/c++/bits/unique_ptr.h:51:28: note: declared here
   template<typename> class auto_ptr;
                            ^~~~~~~~

For a full build output see the following log: https://travis-ci.org/NeroBurner/glog/jobs/399043400

With MSVC 2017 and C++17 enabled the build throws an error (full log https://ci.appveyor.com/project/NeroBurner/glog/build/1.0.111/job/dl21jws89k12c66u#L266)

ClCompile:
  C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.14.26428\bin\HostX86\x64\CL.exe /c /I"C:\projects\glog\_build_vs-15-2017-win64-cxx17_Debug" /IC:\projects\glog\src /IC:\projects\glog\src\windows /I"C:\Tools\vcpkg\installed\x64-windows\include" /Zi /nologo /W3 /WX- /diagnostics:classic /Od /Ob0 /D WIN32 /D _WINDOWS /D GLOG_NO_ABBREVIATED_SEVERITIES /D GOOGLE_GLOG_DLL_DECL= /D "CMAKE_INTDIR=\"Debug\"" /D _MBCS /Gm- /EHsc /RTC1 /MDd /GS /fp:precise /Zc:wchar_t /Zc:forScope /Zc:inline /GR /std:c++17 /Fo"logging_unittest.dir\Debug\\" /Fd"logging_unittest.dir\Debug\vc141.pdb" /Gd /TP /FC /errorReport:queue C:\projects\glog\src\logging_unittest.cc
  logging_unittest.cc
c:\projects\glog\src\logging_unittest.cc(575): error C2065: 'auto_ptr': undeclared identifier [C:\projects\glog\_build_vs-15-2017-win64-cxx17_Debug\logging_unittest.vcxproj]

edit: Just using unique_ptr fixes the warning and compilation for C++11 and above, but breaks the test for C++98 and below