gcc/testsuite/gcc.dg/torture/pr50287.c

   1 /* { dg-do compile } */
   2
   3 struct PMC {
   4     unsigned flags;
   5 };
   6
   7 struct PVC {
   8   unsigned flags, other_stuff;
   9 };
  10
  11
  12 typedef struct Pcc_cell
  13 {
  14     struct PMC *p;
  15     long bla;
  16     long type;
  17 } Pcc_cell;
  18
  19 int gi;
  20 int cond;
  21
  22 struct PVC g_pvc;
  23
  24 extern void abort ();
  25 extern void never_ever(int interp, struct PMC *pmc)
  26   __attribute__((noinline,noclone));
  27
  28 void never_ever (int interp, struct PMC *pmc)
  29 {
  30   abort ();
  31 }
  32
  33 static void mark_cell(int * interp, Pcc_cell *c, struct PVC pvc)
  34   __attribute__((__nonnull__(1)));
  35
  36 static void
  37 mark_cell(int * interp, Pcc_cell *c, struct PVC pvc)
  38 {
  39   if (!cond)
  40     return;
  41
  42   if (c && c->type == 4 && c->p
  43       && !(c->p->flags & (1<<8)))
  44     never_ever(gi + 1, c->p);
  45   if (c && c->type == 4 && c->p
  46       && !(c->p->flags & (1<<7)))
  47     never_ever(gi + 2, c->p);
  48   if (c && c->type == 4 && c->p
  49       && !(c->p->flags & (1<<6)))
  50     never_ever(gi + 3, c->p);
  51   if (c && c->type == 4 && c->p
  52       && !(c->p->flags & (1<<5)))
  53     never_ever(gi + 4, c->p);
  54   if (c && c->type == 4 && c->p
  55       && !(c->p->flags & (1<<4)))
  56     never_ever(gi + 5, c->p);
  57   if (c && c->type == 4 && c->p
  58       && !(c->p->flags & (1<<3)))
  59     never_ever(gi + 6, c->p);
  60   if (c && c->type == 4 && c->p
  61       && !(c->p->flags & (1<<2)))
  62     never_ever(gi + 7, c->p);
  63   if (c && c->type == 4 && c->p
  64       && !(c->p->flags & (1<<1)))
  65     never_ever(gi + 8, c->p);
  66   if (c && c->type == 4 && c->p
  67       && !(c->p->flags & (1<<9)))
  68     never_ever(gi + 9, c->p);
  69 }
  70
  71 static void
  72 foo(int * interp, Pcc_cell *c)
  73 {
  74   mark_cell(interp, c, g_pvc);
  75 }
  76
  77 static struct Pcc_cell *
  78 __attribute__((noinline,noclone))
  79 getnull(void)
  80 {
  81   return (struct Pcc_cell *) 0;
  82 }
  83
  84
  85 int main()
  86 {
  87   int i;
  88
  89   cond = 1;
  90   for (i = 0; i < 100; i++)
  91     foo (&gi, getnull ());
  92   return 0;
  93 }
  94
  95
  96 void
  97 bar_1 (int * interp, Pcc_cell *c)
  98 {
  99   c->bla += 1;
 100   mark_cell(interp, c, g_pvc);
 101 }
 102
 103 void
 104 bar_2 (int * interp, Pcc_cell *c, struct PVC pvc)
 105 {
 106   c->bla += 2;
 107   mark_cell(interp, c, pvc);
 108 }
 109