1// RUN: %clang_cc1 -fsyntax-only -verify %s
2
3int f() __attribute__((warn_unused_result));
4
5struct S {
6  void t() const;
7};
8S g1() __attribute__((warn_unused_result));
9S *g2() __attribute__((warn_unused_result));
10S &g3() __attribute__((warn_unused_result));
11
12void test() {
13  f(); // expected-warning {{ignoring return value}}
14  g1(); // expected-warning {{ignoring return value}}
15  g2(); // expected-warning {{ignoring return value}}
16  g3(); // expected-warning {{ignoring return value}}
17
18  (void)f();
19  (void)g1();
20  (void)g2();
21  (void)g3();
22
23  if (f() == 0) return;
24
25  g1().t();
26  g2()->t();
27  g3().t();
28
29  int i = f();
30  S s1 = g1();
31  S *s2 = g2();
32  S &s3 = g3();
33  const S &s4 = g1();
34}
35
36struct X {
37 int foo() __attribute__((warn_unused_result));
38};
39
40void bah() {
41  X x, *x2;
42  x.foo(); // expected-warning {{ignoring return value}}
43  x2->foo(); // expected-warning {{ignoring return value}}
44}
45