clang/test/SemaCXX/no-rtti.cpp

   1 // RUN: %clang_cc1 -triple x86_64-unknown-linux -fsyntax-only -verify -fno-rtti %s
   2
   3 namespace std {
   4   class type_info;
   5 }
   6
   7 void f()
   8 {
   9   (void)typeid(int); // expected-error {{use of typeid requires -frtti}}
  10 }
  11
  12 namespace {
  13 struct A {
  14   virtual ~A(){};
  15 };
  16
  17 struct B : public A {
  18   B() : A() {}
  19 };
  20 }
  21
  22 bool isa_B(A *a) {
  23   return dynamic_cast<B *>(a) != 0; // expected-error {{use of dynamic_cast requires -frtti}}
  24 }
  25
  26 void* getMostDerived(A* a) {
  27   // This cast does not use RTTI.
  28   return dynamic_cast<void *>(a);
  29 }