_SC_THREAD_SAFE_FUNCTIONS  313 ext/etc/constdefs.h #if !defined(_SC_THREAD_SAFE_FUNCTIONS)
_SC_THREAD_SAFE_FUNCTIONS  315 ext/etc/constdefs.h #  define _SC_THREAD_SAFE_FUNCTIONS _SC_THREAD_SAFE_FUNCTIONS
_SC_THREAD_SAFE_FUNCTIONS 1127 ext/etc/constdefs.h #if defined(_SC_THREAD_SAFE_FUNCTIONS)
_SC_THREAD_SAFE_FUNCTIONS 1128 ext/etc/constdefs.h     rb_define_const(mod, "SC_THREAD_SAFE_FUNCTIONS", INTEGER2NUM(_SC_THREAD_SAFE_FUNCTIONS));