gomp-20050608-branch/gcc/testsuite/gcc.dg/torture/builtin-noret-2.c

   1 /* Test for builtin noreturn attributes when the visible declarations
   2    are function-local.  Modified from builtin-noret-1.c by Zack Weinberg
   3    <zack@codesourcery.com>.  */
   4 /* { dg-options "-multiply_defined suppress" { target powerpc-*-darwin* } } */
   5 /* { dg-do link } */
   6 /* { dg-require-weak "" } */
   7
   8 extern void tabort (void);
   9 extern void texit (void);
  10 extern void t_exit (void);
  11 extern void t_Exit (void);
  12
  13 extern void link_failure (void);
  14
  15 int
  16 main (void)
  17 {
  18   volatile int i = 0;
  19   extern void exit (int);
  20   if (i)
  21     tabort ();
  22   if (i)
  23     texit ();
  24   if (i)
  25     t_exit ();
  26   if (i)
  27     t_Exit ();
  28   exit (0);
  29 }
  30
  31 void
  32 tabort (void)
  33 {
  34   extern void abort (void);
  35   abort ();
  36   link_failure ();
  37 }
  38
  39 void
  40 texit (void)
  41 {
  42   extern void exit (int);
  43   exit (1);
  44   link_failure ();
  45 }
  46
  47 void
  48 t_exit (void)
  49 {
  50   extern void _exit (int);
  51   /* Some non-Unix libcs have _exit, and won't allow it to be re-defined,
  52      so make it weak.  */
  53 #pragma weak _exit
  54   _exit (1);
  55   link_failure ();
  56 }
  57
  58 /* Some non-Unix libcs might not have _exit.  */
  59 /* Some non-Unix libcs have _exit, and won't allow it to be re-defined,
  60    so make it weak.  */
  61 #pragma weak _exit
  62 void
  63 _exit (int i)
  64 {
  65   extern void abort (void);
  66   abort ();
  67 }
  68
  69 void
  70 t_Exit (void)
  71 {
  72   extern void _Exit (int);
  73   /* Some libcs have _Exit, and won't allow it to be re-defined,
  74      so make it weak.  */
  75 #pragma weak _Exit
  76   _Exit (1);
  77   link_failure ();
  78 }
  79
  80 /* Some libcs might not have _Exit.  */
  81 /* Some libcs have _Exit, and won't allow it to be re-defined,
  82    so make it weak.  */
  83 #pragma weak _Exit
  84 void
  85 _Exit (int i)
  86 {
  87   extern void abort (void);
  88   abort ();
  89 }