1// RUN: %clang_cc1 -fsyntax-only -verify -Wdangling-else %s
2
3void f(int a, int b, int c, int d, int e) {
4
5  // should warn
6  { if (a) if (b) d++; else e++; } // expected-warning {{add explicit braces to avoid dangling else}}
7  { if (a) while (b) if (c) d++; else e++; } // expected-warning {{add explicit braces to avoid dangling else}}
8  { if (a) switch (b) if (c) d++; else e++; } // expected-warning {{add explicit braces to avoid dangling else}}
9  { if (a) for (;;) if (c) d++; else e++; } // expected-warning {{add explicit braces to avoid dangling else}}
10  { if (a) if (b) if (d) d++; else e++; else d--; } // expected-warning {{add explicit braces to avoid dangling else}}
11
12  if (a)
13    if (b) {
14      d++;
15    } else e++; // expected-warning {{add explicit braces to avoid dangling else}}
16
17  // shouldn't
18  { if (a) if (b) d++; }
19  { if (a) if (b) if (c) d++; }
20  { if (a) if (b) d++; else e++; else d--; }
21  { if (a) if (b) if (d) d++; else e++; else d--; else e--; }
22  { if (a) do if (b) d++; else e++; while (c); }
23
24  if (a) {
25    if (b) d++;
26    else e++;
27  }
28
29  if (a) {
30    if (b) d++;
31  } else e++;
32}
33
34// Somewhat more elaborate case that shouldn't warn.
35class A {
36 public:
37  void operator<<(const char* s) {}
38};
39
40void HandleDisabledThing() {}
41A GetThing() { return A(); }
42
43#define FOO(X) \
44   switch (0) default: \
45     if (!(X)) \
46       HandleDisabledThing(); \
47     else \
48       GetThing()
49
50void f(bool cond) {
51  int x = 0;
52  if (cond)
53    FOO(x) << "hello"; // no warning
54}
55
56