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/* Test C1X _Noreturn.  Test valid code.  */

/* { dg-do compile } */

/* { dg-options "-std=c1x -pedantic-errors" } */

_Noreturn void exit (int);

_Noreturn int f1 (void);

_Noreturn void f2 (void);

static void _Noreturn f3 (void) { exit (0); }

/* Returning from a noreturn function is undefined at runtime, not a

   constraint violation, but recommended practice is to diagnose if

   such a return appears possible.  */

_Noreturn int

f4 (void)

{

  return 1; /* { dg-warning "has a 'return' statement" } */

  /* { dg-warning "does return" "second warning" { target *-*-* } 20 } */

}

_Noreturn void

f5 (void)

{

  return; /* { dg-warning "has a 'return' statement" } */

  /* { dg-warning "does return" "second warning" { target *-*-* } 27 } */

}

_Noreturn void

f6 (void)

{

} /* { dg-warning "does return" } */

_Noreturn void

f7 (int a)

{

  if (a)

    exit (0);

} /* { dg-warning "does return" } */

/* Declarations need not all have _Noreturn.  */

void f2 (void);

void f8 (void);

_Noreturn void f8 (void);

/* Duplicate _Noreturn is OK.  */

_Noreturn _Noreturn void _Noreturn f9 (void);

/* _Noreturn does not affect type compatibility.  */

void (*fp) (void) = f5;

/* noreturn is an ordinary identifier.  */

int noreturn;