clang/test/CodeGenCXX/static-init-3.cpp

   1 // RUN: %clang_cc1 -emit-llvm -triple x86_64-apple-darwin10.0.0 -o - %s | FileCheck %s
   2
   3 // PR7050
   4 template<class T> struct X0 : public T { };
   5
   6 template <class T>
   7 struct X1
   8 {
   9      static T & instance;
  10     // include this to provoke instantiation at pre-execution time
  11     static void use(T const &) {}
  12      static T & get() {
  13         static X0<T> t;
  14         use(instance);
  15         return static_cast<T &>(t);
  16     }
  17 };
  18
  19 // CHECK: @_ZN2X1I2X2I1BEE8instanceE = linkonce_odr global ptr null, align 8
  20 // CHECJ: @_ZN2X1I2X2I1AEE8instanceE = linkonce_odr global ptr null, align 8
  21 template<class T> T & X1<T>::instance = X1<T>::get();
  22
  23 class A { };
  24 class B : public A { };
  25
  26 template<typename T> struct X2 {};
  27 X2< B > bg = X1< X2< B > >::get();
  28 X2< A > ag = X1< X2< A > >::get();