clang/test/CodeGenCXX/vtable-key-function.cpp

   1 // RUN: %clang_cc1 %s -triple=x86_64-apple-darwin10 -emit-llvm -o - | FileCheck %s
   2 // PR5697
   3 namespace PR5697 {
   4 struct A {
   5   virtual void f() { }
   6   A();
   7   A(int);
   8 };
   9
  10 // A does not have a key function, so the first constructor we emit should
  11 // cause the vtable to be defined (without assertions.)
  12 // CHECK: @_ZTVN6PR56971AE = linkonce_odr unnamed_addr constant
  13 A::A() { }
  14 A::A(int) { }
  15 }
  16
  17 // Make sure that we don't assert when building the vtable for a class
  18 // template specialization or explicit instantiation with a key
  19 // function.
  20 template<typename T>
  21 struct Base {
  22   virtual ~Base();
  23 };
  24
  25 template<typename T>
  26 struct Derived : public Base<T> { };
  27
  28 template<>
  29 struct Derived<char> : public Base<char> {
  30   virtual void anchor();
  31 };
  32
  33 void Derived<char>::anchor() { }