1// RUN: %clang_cc1 -fsyntax-only -verify -Wunused-value %s
2
3// PR4806
4namespace test0 {
5  class Box {
6  public:
7    int i;
8    volatile int j;
9  };
10
11  void doit() {
12    // pointer to volatile has side effect (thus no warning)
13    Box* box = new Box;
14    box->i; // expected-warning {{expression result unused}}
15    box->j;
16  }
17}
18
19namespace test1 {
20struct Foo {
21  int i;
22  bool operator==(const Foo& rhs) {
23    return i == rhs.i;
24  }
25};
26
27#define NOP(x) (x)
28void b(Foo f1, Foo f2) {
29  NOP(f1 == f2);  // expected-warning {{expression result unused}}
30}
31#undef NOP
32}
33