Defined in 3 files as a macro:

• EXTERNAL_HEADERS/stddef.h, line 34 (as a macro)
• bsd/sys/_types/_size_t.h, line 29 (as a macro)
• osfmk/libsa/types.h, line 53 (as a macro)

Referenced in 3 files:

• EXTERNAL_HEADERS/stddef.h, line 33
• bsd/sys/_types/_size_t.h, line 28
• osfmk/libsa/types.h, line 52