template-linkage.cpp
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// RUN: %clang_cc1 %s -triple=x86_64-apple-darwin10 -emit-llvm -o - | FileCheck %s
// CHECK: Outer5Inner{{.*}}localE6memberE = external global
template<typename T> struct A {
virtual void f(T) { }
inline void g() { }
};
// Explicit instantiations have external linkage.
// CHECK-LABEL: define weak_odr void @_ZN1AIiE1gEv(
template void A<int>::g();
// CHECK-LABEL: define weak_odr void @_ZN1AIfE1fEf(
// CHECK-LABEL: define weak_odr void @_ZN1AIfE1gEv(
// FIXME: This should also emit the vtable.
template struct A<float>;
// CHECK-LABEL: define weak_odr void @_Z1fIiEvT_
template <typename T> void f(T) { }
template void f<int>(int);
// CHECK-LABEL: define weak_odr void @_Z1gIiEvT_
template <typename T> inline void g(T) { }
template void g<int>(int);
template<typename T>
struct X0 {
virtual ~X0() { }
};
template<typename T>
struct X1 : X0<T> {
virtual void blarg();
};
template<typename T> void X1<T>::blarg() { }
extern template struct X0<char>;
extern template struct X1<char>;
// CHECK-LABEL: define linkonce_odr void @_ZN2X1IcED1Ev(%struct.X1* %this) unnamed_addr
void test_X1() {
X1<char> i1c;
}
namespace PR14825 {
struct Outer {
template <typename T> struct Inner {
static int member;
};
template <typename T> void Get() {
int m = Inner<T>::member;
}
};
void test() {
struct local {};
Outer o;
typedef void (Outer::*mptr)();
mptr method = &Outer::Get<local>;
}
}