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
   6 extern void abort (void);
   7 extern void exit (int);
   8 extern void _exit (int);
   9 extern void _Exit (int);
  10
  11 extern void tabort (void);
  12 extern void texit (void);
  13 extern void t_exit (void);
  14 extern void t_Exit (void);
  15
  16 extern void link_failure (void);
  17
  18 /* Some libcs have _exit and/or _Exit, and won't allow it to be re-defined,
  19    so make it weak.  */
  20 #pragma weak _exit
  21 #pragma weak _Exit
  22
  23 int
  24 main (void)
  25 {
  26   volatile int i = 0;
  27   if (i)
  28     tabort ();
  29   if (i)
  30     texit ();
  31   if (i)
  32     t_exit ();
  33   if (i)
  34     t_Exit ();
  35   exit (0);
  36 }
  37
  38 void
  39 tabort (void)
  40 {
  41   abort ();
  42   link_failure ();
  43 }
  44
  45 void
  46 texit (void)
  47 {
  48   exit (1);
  49   link_failure ();
  50 }
  51
  52 void
  53 t_exit (void)
  54 {
  55   _exit (1);
  56   link_failure ();
  57 }
  58
  59 /* Some non-Unix libcs might not have _exit.  */
  60 void
  61 _exit (int i)
  62 {
  63   abort ();
  64 }
  65
  66 void
  67 t_Exit (void)
  68 {
  69   _Exit (1);
  70   link_failure ();
  71 }
  72
  73 /* Some libcs might not have _Exit.  */
  74 void
  75 _Exit (int i)
  76 {
  77   abort ();
  78 }