gcc/testsuite/gcc.c-torture/execute/20101011-1.c

   1 /* With -fnon-call-exceptions 0 / 0 should not be eliminated.  The .x
   2    file sets the option.  */
   3
   4 #ifdef SIGNAL_SUPPRESS
   5 # define DO_TEST 0
   6 #elif defined (__powerpc__) || defined (__PPC__) || defined (__ppc__) || defined (__POWERPC__) || defined (__ppc)
   7   /* On PPC division by zero does not trap.  */
   8 # define DO_TEST 0
   9 #elif defined (__SPU__)
  10   /* On SPU division by zero does not trap.  */
  11 # define DO_TEST 0
  12 #elif defined (__sh__)
  13   /* On SH division by zero does not trap.  */
  14 # define DO_TEST 0
  15 #else
  16 # define DO_TEST 1
  17 #endif
  18
  19 #if DO_TEST
  20
  21 #include <signal.h>
  22
  23 void
  24 sigfpe (int signum __attribute__ ((unused)))
  25 {
  26   exit (0);
  27 }
  28
  29 #endif
  30
  31 /* When optimizing, the compiler is smart enough to constant fold the
  32    static unset variables i and j to produce 0 / 0, but it can't
  33    eliminate the assignment to the global k.  */
  34 static int i;
  35 static int j;
  36 int k;
  37
  38 int
  39 main ()
  40 {
  41 #if DO_TEST
  42   signal (SIGFPE, sigfpe);
  43   k = i / j;
  44   abort ();
  45 #else
  46   exit (0);
  47 #endif
  48 }