_Alignof _Noreturn _Thread_local alignas alignof max_align_t noreturn static_assert thread_local

_Noreturn #define _Noreturn Declare a function that doesn't return to the caller. You'd probably use this rarely, and only for functions that use something like longjmp, exit, abort, ::quick_exit or ::thrd_exit under the hood. Remarks Uses a gcc attribute for the implementation or defers to a #pragma if that is not available. See also noreturn Definition at line 835 of file p99_compiler.h.