Defined in 2 files as a macro:

• external/gpl3/gcc.old/dist/libstdc++-v3/config/os/mingw32-w64/os_defines.h, line 89 (as a macro)
• external/gpl3/gcc.old/dist/libstdc++-v3/config/os/mingw32/os_defines.h, line 79 (as a macro)

Referenced in 2 files:

• external/gpl3/gcc.old/dist/libgcc/gthr-posix.h, line 72
• external/gpl3/gcc/dist/libgcc/gthr-posix.h, line 72