gcc/testsuite/gcc.dg/pr82916.c

   1 /* PR bootstrap/82916 */
   2 /* { dg-do run } */
   3 /* { dg-options "-O2 -fno-tree-dse" } */
   4
   5 struct A { struct A *next; };
   6 struct C
   7 {
   8   int *of;
   9   struct C *parent, *prev, *next;
  10   int depth;
  11   int min;
  12   struct C *min_occ;
  13 };
  14
  15 __attribute__((noipa)) struct C *
  16 foo (int *node)
  17 {
  18   struct A *p = __builtin_malloc (sizeof (struct C));
  19   if (!p)
  20     return 0;
  21   p->next = 0;
  22   /* Originally placement new.  */
  23   struct C *nw = (struct C *)(void *)p;
  24   nw->of = node;
  25   nw->parent = 0;
  26   nw->prev = 0;
  27   nw->next = 0;
  28   nw->depth = 0;
  29   nw->min_occ = nw;
  30   nw->min = 0;
  31   return nw;
  32 }
  33
  34 int
  35 main ()
  36 {
  37   int o;
  38   struct C *p = foo (&o);
  39   if (p)
  40     {
  41       if (p->of != &o || p->parent || p->prev || p->next || p->depth
  42           || p->min || p->min_occ != p)
  43         __builtin_abort ();
  44     }
  45   __builtin_free (p);
  46   return 0;
  47 }