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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);
}