1/* Test C11 _Noreturn.  Test valid code.  */
2/* { dg-do compile } */
3/* { dg-options "-std=c11 -pedantic-errors" } */
4
5_Noreturn void exit (int);
6
7_Noreturn int f1 (void);
8
9_Noreturn void f2 (void);
10
11static void _Noreturn f3 (void) { exit (0); }
12
13/* Returning from a noreturn function is undefined at runtime, not a
14   constraint violation, but recommended practice is to diagnose if
15   such a return appears possible.  */
16
17_Noreturn int
18f4 (void)
19{
20  return 1; /* { dg-warning "has a 'return' statement" } */
21  /* { dg-warning "does return" "second warning" { target *-*-* } 20 } */
22}
23
24_Noreturn void
25f5 (void)
26{
27  return; /* { dg-warning "has a 'return' statement" } */
28  /* { dg-warning "does return" "second warning" { target *-*-* } 27 } */
29}
30
31_Noreturn void
32f6 (void)
33{
34} /* { dg-warning "does return" } */
35
36_Noreturn void
37f7 (int a)
38{
39  if (a)
40    exit (0);
41} /* { dg-warning "does return" } */
42
43/* Declarations need not all have _Noreturn.  */
44
45void f2 (void);
46
47void f8 (void);
48_Noreturn void f8 (void);
49
50/* Duplicate _Noreturn is OK.  */
51_Noreturn _Noreturn void _Noreturn f9 (void);
52
53/* _Noreturn does not affect type compatibility.  */
54
55void (*fp) (void) = f5;
56
57/* noreturn is an ordinary identifier.  */
58
59int noreturn;
60