gcc/testsuite/gcc.dg/torture/pr57748-1.c

   1 /* PR middle-end/57748 */
   2 /* { dg-do run } */
   3 /* ICE in expand_assignment:
   4    misalignp == true, !MEM_P (to_rtx), offset != 0,
   5    => gcc_assert (TREE_CODE (offset) == INTEGER_CST) */
   6
   7 #include <stdlib.h>
   8
   9 extern void abort (void);
  10
  11 typedef long long V
  12   __attribute__ ((vector_size (2 * sizeof (long long)), may_alias));
  13
  14 typedef struct S { V a; V b[0]; } P __attribute__((aligned (1)));
  15
  16 struct __attribute__((packed)) T { char c; P s; };
  17
  18 void __attribute__((noinline, noclone))
  19 check (struct T *t)
  20 {
  21   if (t->s.b[0][0] != 3 || t->s.b[0][1] != 4)
  22     abort ();
  23 }
  24
  25 int __attribute__((noinline, noclone))
  26 get_i (void)
  27 {
  28   return 0;
  29 }
  30
  31 void __attribute__((noinline, noclone))
  32 foo (P *p)
  33 {
  34   V a = { 3, 4 };
  35   int i = get_i ();
  36   p->b[i] = a;
  37 }
  38
  39 int
  40 main ()
  41 {
  42   struct T *t = (struct T *) calloc (128, 1);
  43
  44   foo (&t->s);
  45   check (t);
  46
  47   free (t);
  48   return 0;
  49 }