Defined in 3 files as a macro:
- external/gpl3/gcc.old/dist/gcc/config/rs6000/aix.h, line 39 (as a macro)
- external/gpl3/gcc.old/dist/gcc/config/rs6000/darwin.h, line 206 (as a macro)
- external/gpl3/gcc.old/dist/gcc/config/rs6000/sysv4.h, line 259 (as a macro)