1// RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 %s
2
3struct S { S(int); operator bool(); };
4
5void f() {
6  int a;
7  typedef int n;
8
9  while (a) ;
10  while (int x) ; // expected-error {{variable declaration in condition must have an initializer}}
11  while (float x = 0) ;
12  if (const int x = a) ; // expected-warning{{empty body}} expected-note{{put the semicolon on a separate line to silence this warning}}
13  switch (int x = a+10) {}
14  for (; int x = ++a; ) ;
15
16  if (S(a)) {} // ok
17  if (S(a) = 0) {} // ok
18  if (S(a) == 0) {} // ok
19
20  if (S(n)) {} // expected-error {{unexpected type name 'n': expected expression}}
21  if (S(n) = 0) {} // ok
22  if (S(n) == 0) {} // expected-error {{unexpected type name 'n': expected expression}}
23
24  if (S b(a)) {} // expected-error {{variable declaration in condition cannot have a parenthesized initializer}}
25
26  if (S b(n)) {} // expected-error {{a function type is not allowed here}} expected-error {{must have an initializer}}
27  if (S b(n) = 0) {} // expected-error {{a function type is not allowed here}}
28  if (S b(n) == 0) {} // expected-error {{a function type is not allowed here}} expected-error {{did you mean '='?}}
29
30  S s(a);
31  if (S{s}) {} // ok
32  if (S a{s}) {} // ok
33  if (S a = {s}) {} // ok
34  if (S a == {s}) {} // expected-error {{did you mean '='?}}
35
36  if (S(b){a}) {} // ok
37  if (S(b) = {a}) {} // ok
38}
39