anchor.diff:      REM Inform M*LIB to use Annex K by defining __STDC_WANT_LIB_EXT1__
       echo Compiling %%f with %compiler%
       %compiler% /I.. /O2 /W3 /std:c++14 /Zc:__cplusplus /Zc:preprocessor /D__STDC_WANT_LIB_EXT1__ test.cpp > %%f.log 2>&1 
  -    if ERRORLEVEL 1 ( 
  +    if not ERRORLEVEL 0 ( 
           echo *** BUILD ERROR for %%f *** >> %%f.log
           type %%f.log 
           if /i "%%f" NEQ "%expectedFailure1%" if /i "%%f" NEQ "%expectedFailure2%" EXIT /B 1
  
positive.code:     echo =================================================
      echo Testing %%f
      REM Copy the test file as a C++ file as CL.EXE only support C++ file
      copy %%f test.cpp
      if ERRORLEVEL 1 EXIT /B 1
      REM Compile the test suite
      REM /Zc:preprocessor is mandatory to have a compliant preprocessor
      REM /Zc:__cplusplus is needed to report the real value of __cplusplus, so that M*LIB uses the C++ atomic, and not its emulation.
  
negative.code:     REM Execute it
      echo Running %%f
      test.exe >> %%f.log 2>&1 
      if not ERRORLEVEL 0 (
          echo *** RUNTIME ERROR for %%f ***  >> %%f.log
          type %%f.log 
          if /i "%%f" NEQ "%expectedFailure%"  if /i "%%f" NEQ "%expectedFailure2%" EXIT /B 1
      ) ELSE (
          echo Test OK for %%f  >> %%f.log
      )
  