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noreturn macro - <stdnoreturn.h> - C
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<stdnoreturn.h> C Header

Macros:

C Standard Library

C Standard Library

<assert.h>(C89) <complex.h>(C99)op <ctype.h>(C89) <errno.h>(C89) <fenv.h>(C99) <float.h>(C89) <inttypes.h>(C99) <iso646.h>(NA1) <limits.h>(C89) <locale.h>(C89) <math.h>(C89) <setjmp.h>(C89) <signal.h>(C89) <stdalign.h>(C11) <stdarg.h>(C89) <stdatomic.h>(C11)op <stdbool.h>(C99) <stddef.h>(C89) <stdint.h>(C99) <stdio.h>(C89) <stdlib.h>(C89) <stdnoreturn.h>(C11) <string.h>(C89) <tgmath.h>(C99) <threads.h>(C11)op <time.h>(C89) <uchar.h>(C11) <wchar.h>(NA1) <wctype.h>(NA1)

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The noreturn macro, which is part of <stdnoreturn.h>, expands to the _Noreturn keyword.

Synopsis[edit]

#include <stdnoreturn.h>
#define noreturn _Noreturn

Description[edit]

The noreturn object-like macro expands to the _Noreturn, a keyword added in C11 to mark non-returning functions.

Example[edit]

#include <stdlib.h>
#include <stdio.h>
#include <stdnoreturn.h>

noreturn void fatal()
{
    fprintf(stderr, "Program encountered an unrecoverable error\n");
    exit(EXIT_FAILURE);
}

See also[edit]

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