Defined in 5 files as a macro:
- contrib/libstdc++/config/os/mingw32/os_defines.h, line 50 (as a macro)
- contrib/llvm/include/llvm/DebugInfo/PDB/DIA/DIASupport.h, line 22 (as a macro)
- contrib/llvm/lib/Support/Windows/WindowsSupport.h, line 34 (as a macro)
- contrib/llvm/tools/clang/lib/Driver/ToolChains/MSVC.cpp, line 44 (as a macro)
- contrib/llvm/tools/lldb/source/Utility/SelectHelper.cpp, line 32 (as a macro)