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/* Test C1X _Noreturn.  Test valid code using stdnoreturn.h.  */

/* { dg-do run } */

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

#include <stdnoreturn.h>

extern int strcmp (const char *, const char *);

noreturn void exit (int);

noreturn void abort (void);

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 *-*-* } 25 } */

}

noreturn void

f5 (void)

{

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

  /* { dg-warning "does return" "second warning" { target *-*-* } 32 } */

}

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;

#ifndef noreturn

#error "noreturn not defined"

#endif

#define str(x) #x

#define xstr(x) str(x)

const char *s = xstr(noreturn);

int

main (void)

{

  if (strcmp (s, "_Noreturn") != 0)

    abort ();

  exit (0);

}