1 // RUN: %clang_cc1 -fsyntax-only -verify %s 2 3 struct S { S(int); operator bool(); }; 4 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