1 // RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 %s 2 3 struct S { S(int); operator bool(); }; 4 5 void 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}} 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}} 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
