Defined in 4 files as a macro:

• include/ndbm.h, line 68 (as a macro)
• include/spawn.h, line 54 (as a macro)
• include/stdlib.h, line 328 (as a macro)
• include/unistd.h, line 833 (as a macro)

Referenced in 4 files:

• include/ndbm.h, line 66
• include/spawn.h, line 52
• include/stdlib.h, line 326
• include/unistd.h, line 832