1 // RUN: %clang_cc1 -fsyntax-only -verify %s
2 
3 struct S { S(int); operator bool(); };
4 
f()5 void f() {
6   int a;
7   while (a) ;
8   while (int x) ; // expected-error {{variable declaration in condition must have an initializer}}
9   while (float x = 0) ;
10   if (const int x = a) ; // expected-warning{{empty body}} expected-note{{put the semicolon on a separate line to silence this warning}}
11   switch (int x = a+10) {}
12   for (; int x = ++a; ) ;
13 
14   if (S a(42)) {} // expected-error {{variable declaration in condition cannot have a parenthesized initializer}}
15 }
16