blob: 733a9f0be538504a4cafd8a4d5d631ae7206c2b7 [file] [log] [blame]
// RUN: %clang_cc1 %s -triple=x86_64-apple-darwin10 -emit-llvm -o - | FileCheck %s
namespace {
struct A {
virtual void f() { }
};
}
void f() { A b; }
struct B {
B();
virtual void f();
};
B::B() { }
struct C {
C();
virtual void f() { }
};
C::C() { }
struct D {
virtual void f();
};
void D::f() { }
static struct : D { } e;
// The destructor is the key function.
template<typename T>
struct E {
virtual ~E();
};
template<typename T> E<T>::~E() { }
// Anchor is the key function
template<>
struct E<char> {
virtual void anchor();
};
void E<char>::anchor() { }
template struct E<short>;
extern template struct E<int>;
void use_E() {
E<int> ei;
(void)ei;
E<long> el;
(void)el;
}
// No key function
template<typename T>
struct F {
virtual void foo() { }
};
// No key function
template<>
struct F<char> {
virtual void foo() { }
};
template struct F<short>;
extern template struct F<int>;
void use_F(F<char> &fc) {
F<int> fi;
(void)fi;
F<long> fl;
(void)fl;
fc.foo();
}
// B has a key function that is not defined in this translation unit so its vtable
// has external linkage.
// CHECK: @_ZTV1B = external constant
// C has no key function, so its vtable should have weak_odr linkage.
// CHECK: @_ZTS1C = weak_odr constant
// CHECK: @_ZTI1C = weak_odr constant
// CHECK: @_ZTV1C = weak_odr constant
// D has a key function that is defined in this translation unit so its vtable is
// defined in the translation unit.
// CHECK: @_ZTS1D = constant
// CHECK: @_ZTI1D = constant
// CHECK: @_ZTV1D = constant
// E<char> is an explicit specialization with a key function defined
// in this translation unit, so its vtable should have external
// linkage.
// CHECK: @_ZTS1EIcE = constant
// CHECK: @_ZTI1EIcE = constant
// CHECK: @_ZTV1EIcE = constant
// E<short> is an explicit template instantiation with a key function
// defined in this translation unit, so its vtable should have
// weak_odr linkage.
// CHECK: @_ZTS1EIsE = weak_odr constant
// CHECK: @_ZTI1EIsE = weak_odr constant
// CHECK: @_ZTV1EIsE = weak_odr constant
// F<short> is an explicit template instantiation without a key
// function, so its vtable should have weak_odr linkage
// CHECK: @_ZTS1FIsE = weak_odr constant
// CHECK: @_ZTI1FIsE = weak_odr constant
// CHECK: @_ZTV1FIsE = weak_odr constant
// E<long> is an implicit template instantiation with a key function
// defined in this translation unit, so its vtable should have
// weak_odr linkage.
// CHECK: @_ZTS1EIlE = weak_odr constant
// CHECK: @_ZTI1EIlE = weak_odr constant
// CHECK: @_ZTV1EIlE = weak_odr constant
// The anonymous struct for e has no linkage, so the vtable should have
// internal linkage.
// CHECK: @"_ZTS3$_0" = internal constant
// CHECK: @"_ZTI3$_0" = internal constant
// CHECK: @"_ZTV3$_0" = internal constant
// F<long> is an implicit template instantiation with no key function,
// so its vtable should have weak_odr linkage.
// CHECK: @_ZTS1FIlE = weak_odr constant
// CHECK: @_ZTI1FIlE = weak_odr constant
// CHECK: @_ZTV1FIlE = weak_odr constant
// F<int> is an explicit template instantiation declaration without a
// key function, so its vtable should have weak_odr linkage.
// CHECK: @_ZTS1FIiE = weak_odr constant
// CHECK: @_ZTI1FIiE = weak_odr constant
// CHECK: @_ZTV1FIiE = weak_odr constant
// E<int> is an explicit template instantiation declaration. It has a
// key function that is not instantiated, so we should only reference
// its vtable, not define it.
// CHECK: @_ZTV1EIiE = external constant
// The A vtable should have internal linkage since it is inside an anonymous
// namespace.
// CHECK: @_ZTSN12_GLOBAL__N_11AE = internal constant
// CHECK: @_ZTIN12_GLOBAL__N_11AE = internal constant
// CHECK: @_ZTVN12_GLOBAL__N_11AE = internal constant