/* { dg-do compile } */ /* { dg-options "-O2 -fdump-tree-optimized" } */ union tree_node; typedef union tree_node *tree; enum tree_code { ARRAY_TYPE, LAST_AND_UNUSED_TREE_CODE }; struct tree_common { enum tree_code code:8; }; union tree_node { struct tree_common common; }; int objects_must_conflict_p (t1, t2) tree t1, t2; { if ((t1->common.code == ARRAY_TYPE) != (t2 && t2->common.code == ARRAY_TYPE)) return 11; return foo (t2 ? get_alias_set (t2) : 0); } /* There should be three assignments of variables to the value zero. */ /* { dg-final { scan-tree-dump-times " = 0" 3 "optimized"} } */