gcc/testsuite/gcc.target/i386/pr60700.c

   1 /* PR rtl-optimization/60700 */
   2 /* { dg-do run { target ia32 } } */
   3 /* { dg-options "-O3 -march=i686" } */
   4
   5 int
   6 __attribute__((noinline))
   7 foo (void)
   8 {
   9   return 0;
  10 }
  11
  12 void *g = (void *)1;
  13
  14 struct st {
  15   char data[36]; /* must be greater than 32.  */
  16 };
  17
  18 int
  19 __attribute__((noinline))
  20 repro(struct st **out)
  21 {
  22   int status = 0;
  23
  24   *out = 0;
  25
  26   status = foo();
  27   if (status != 0) {
  28     return status;
  29   }
  30
  31   if (0 == g) {
  32     status = 999;
  33     return status;
  34   }
  35
  36   *out = (struct st *)__builtin_malloc(sizeof(struct st));
  37   if (0 == *out) {
  38     status = 42;
  39     return status;
  40   }
  41
  42   __builtin_memset(*out, 0, sizeof(struct st));
  43
  44   return status;
  45 }
  46
  47 int
  48 main ()
  49 {
  50   struct st *p;
  51   int ret = repro (&p);
  52   unsigned int i;
  53
  54   for (i = 0; i < sizeof (p->data)/sizeof (p->data[0]); i++)
  55     if (p->data[i] != 0)
  56       __builtin_abort ();
  57
  58   return ret;
  59 }