/* Regression test for PR middle-end/23584 *//* Verify that dereferencing a volatile element in a struct causes   the function not be pure.  *//* { dg-do compile } *//* { dg-options "-O1 -fdump-ipa-pure-const" } */struct test_a { volatile int a; };int func_a(struct test_a *a){        return a->a;}/* { dg-final { scan-ipa-dump-not "found to be pure: func_a" "pure-const" } } *//* { dg-final { cleanup-ipa-dump "pure-const" } } */