gcc/testsuite/gcc.dg/tree-ssa/alias-access-path-13.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-tree-fre1" } */
   3
   4 struct inn
   5 {
   6   int val;
   7 };
   8
   9 struct biggerstruct
  10 {
  11   int a, b;
  12 };
  13
  14 union foo
  15 {
  16   struct inn inn;
  17   struct biggerstruct baz;
  18 } *fooptr;
  19
  20 struct bar
  21 {
  22   union foo foo;
  23   int val2;
  24 } *barptr;
  25
  26 int
  27 test ()
  28 {
  29   union foo foo;
  30   foo.inn.val = 0;
  31   barptr->val2 = 123;
  32   *fooptr = foo;
  33   return barptr->val2;
  34 }
  35
  36 /* { dg-final { scan-tree-dump-times "return 123" 1 "fre1"} } */