gcc/testsuite/gcc.dg/torture/builtin-noret-1.c

   1 /* Test for builtin noreturn attributes.  */
   2 /* Origin: Joseph Myers <jsm28@cam.ac.uk> */
   3 /* { dg-options "-multiply_defined suppress" { target powerpc-*-darwin* } } */
   4 /* { dg-do link } */
   5 /* { dg-require-weak "" } */
   6 /* { dg-prune-output "recognized" } */
   7 /* { dg-prune-output "ld: 0711-768 WARNING" } */
   8
   9 extern void abort (void);
  10 extern void exit (int);
  11 extern void _exit (int);
  12 extern void _Exit (int);
  13
  14 extern void tabort (void);
  15 extern void texit (void);
  16 extern void t_exit (void);
  17 extern void t_Exit (void);
  18
  19 extern void link_failure (void);
  20
  21 /* Some libcs have _exit and/or _Exit, and won't allow it to be re-defined,
  22    so make it weak.  */
  23 #pragma weak _exit
  24 #pragma weak _Exit
  25
  26 int
  27 main (void)
  28 {
  29   volatile int i = 0;
  30   if (i)
  31     tabort ();
  32   if (i)
  33     texit ();
  34   if (i)
  35     t_exit ();
  36   if (i)
  37     t_Exit ();
  38   exit (0);
  39 }
  40
  41 void
  42 tabort (void)
  43 {
  44   abort ();
  45   link_failure ();
  46 }
  47
  48 void
  49 texit (void)
  50 {
  51   exit (1);
  52   link_failure ();
  53 }
  54
  55 void
  56 t_exit (void)
  57 {
  58   _exit (1);
  59   link_failure ();
  60 }
  61
  62 /* Some non-Unix libcs might not have _exit.  */
  63 void
  64 _exit (int i)
  65 {
  66   abort ();
  67 }
  68
  69 void
  70 t_Exit (void)
  71 {
  72   _Exit (1);
  73   link_failure ();
  74 }
  75
  76 /* Some libcs might not have _Exit.  */
  77 void
  78 _Exit (int i)
  79 {
  80   abort ();
  81 }