+ exception_behavior_t, thread_state_flavor_t) __OSX_AVAILABLE_STARTING(__MAC_10_5, __IPHONE_2_0);
+int posix_spawnattr_setspecialport_np(posix_spawnattr_t *__restrict,
+ mach_port_t, int) __OSX_AVAILABLE_STARTING(__MAC_10_5, __IPHONE_2_0);
+int posix_spawn_file_actions_addinherit_np(posix_spawn_file_actions_t *,
+ int) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);