gcc/testsuite/gcc.dg/tree-ssa/pr38895.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O -fstrict-aliasing -fdump-tree-optimized" } */
   3
   4 struct A {
   5   int i;
   6   int j;
   7 };
   8 struct B {
   9   struct A a1;
  10   struct A a2;
  11 };
  12 struct C {
  13   struct A a1;
  14   struct B b;
  15 };
  16 int foo(struct C *c, struct B *b)
  17 {
  18   c->a1.i = 1;
  19   b->a1.i = 0;
  20   return c->a1.i;
  21 }
  22
  23 /* { dg-final { scan-tree-dump "return 1;" "optimized" } } */