clang/test/Parser/cxx0x-condition.cpp

   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) {} // expected-warning {{redundant parentheses}} expected-note 2{{}}
  18   if (S(a) == 0) {} // ok
  19
  20   if (S(n)) {} // expected-error {{unexpected type name 'n': expected expression}}
  21   if (S(n) = 0) {} // expected-warning {{redundant parentheses}} expected-note 2{{}}
  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 }