gcc/testsuite/gcc.c-torture/execute/pr34176.c

   1
   2 typedef __SIZE_TYPE__ size_t;
   3 typedef unsigned int index_ty;
   4 typedef index_ty *index_list_ty;
   5
   6 struct mult_index
   7 {
   8   index_ty index;
   9   unsigned int count;
  10 };
  11
  12 struct mult_index_list
  13 {
  14   struct mult_index *item;
  15   size_t nitems;
  16   size_t nitems_max;
  17
  18   struct mult_index *item2;
  19   size_t nitems2_max;
  20 };
  21
  22 int __attribute__((noinline))
  23 hash_find_entry (size_t *result)
  24 {
  25     *result = 2;
  26     return 0;
  27 }
  28
  29 extern void abort (void);
  30 struct mult_index * __attribute__((noinline))
  31 foo (size_t n)
  32 {
  33   static count = 0;
  34   if (count++ > 0)
  35     abort ();
  36   return 0;
  37 }
  38
  39 int
  40 main (void)
  41 {
  42     size_t nitems = 0;
  43
  44     for (;;)
  45     {
  46         size_t list;
  47
  48         hash_find_entry (&list);
  49         {
  50             size_t len2 = list;
  51             struct mult_index *destptr;
  52             struct mult_index *dest;
  53             size_t new_max  = nitems + len2;
  54
  55             if (new_max != len2)
  56                 break;
  57             dest = foo (new_max);
  58
  59             destptr = dest;
  60             while (len2--)
  61                 destptr++;
  62
  63             nitems = destptr - dest;
  64         }
  65     }
  66
  67     return 0;
  68 }