clang/test/SemaCXX/typeid.cpp

   1 // RUN: %clang_cc1 -fsyntax-only -verify %s
   2
   3 void f()
   4 {
   5   (void)typeid(int); // expected-error {{you need to include <typeinfo> before using the 'typeid' operator}}
   6 }
   7
   8 namespace std {
   9   struct type_info { const char *name; };
  10 }
  11
  12 void g()
  13 {
  14   (void)typeid(int);
  15 }
  16
  17 struct X; // expected-note 3{{forward declaration}}
  18
  19 void g1(X &x) {
  20   (void)typeid(X); // expected-error{{'typeid' of incomplete type 'X'}}
  21   (void)typeid(X&); // expected-error{{'typeid' of incomplete type 'X'}}
  22   (void)typeid(x); // expected-error{{'typeid' of incomplete type 'X'}}
  23 }
  24
  25 void h(int i) {
  26   char V[i];
  27   typeid(V);        // expected-error{{'typeid' of variably modified type 'char[i]'}}
  28   typeid(char [i]); // expected-error{{'typeid' of variably modified type 'char[i]'}}
  29 }
  30
  31 // expected-note@+1 {{read of object 'typeid(int).name' whose value is not known}}
  32 constexpr const char *name = typeid(int).name; // expected-error {{constant expression}}