clang/test/CXX/expr/expr.unary/expr.unary.op/p6.cpp

   1 // RUN: %clang_cc1 -fsyntax-only -verify %s
   2
   3 // -- prvalue of arithmetic
   4
   5 bool b = !0;
   6
   7 bool b2 = !1.2; //expected-warning{{implicit conversion from 'double' to 'bool' changes value from 1.2 to true}}
   8
   9 bool b3 = !4;
  10
  11 // -- unscoped enumeration
  12 enum { E, F };
  13
  14 bool b4 = !E;
  15 bool b5 = !F;
  16
  17 // --  pointer,
  18 bool b6 = !&b4; // expected-warning{{address of 'b4' will always evaluate to 'true'}}
  19 void f();
  20 bool b61 = !&f;
  21
  22 // -- or pointer to member type can be converted to a prvalue of type bool.
  23 struct S { void f() { } };
  24
  25 bool b7 = !&S::f;
  26
  27
  28 bool b8 = !S(); //expected-error {{invalid argument type 'S'}}
  29
  30 namespace PR8181
  31 {
  32   bool f() { } // expected-note{{possible target for call}}
  33   void f(char) { } // expected-note{{possible target for call}}
  34   bool b = !&f;  //expected-error {{reference to overloaded function could not be resolved; did you mean to call it with no arguments?}}
  35 }