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// RUN: %clang_cc1 %s -triple=x86_64-apple-darwin10 -emit-llvm -o - | FileCheck %s
namespace Test1 {
// Check that we emit a non-virtual thunk for C::f.
struct A {
virtual void f();
};
struct B {
virtual void f();
};
struct C : A, B {
virtual void c();
virtual void f();
};
// CHECK: define void @_ZThn8_N5Test11C1fEv(
void C::f() { }
}
namespace Test2 {
// Check that we emit a thunk for B::f since it's overriding a virtual base.
struct A {
virtual void f();
};
struct B : virtual A {
virtual void b();
virtual void f();
};
// CHECK: define void @_ZTv0_n24_N5Test21B1fEv(
void B::f() { }
}
namespace Test3 {
// Check that we emit a covariant thunk for B::f.
struct V1 { };
struct V2 : virtual V1 { };
struct A {
virtual V1 *f();
};
struct B : A {
virtual void b();
virtual V2 *f();
};
// CHECK: define %{{.*}}* @_ZTch0_v0_n24_N5Test31B1fEv(
V2 *B::f() { return 0; }
}
namespace Test4 {
// Check that the thunk for 'C::f' has the same visibility as the function itself.
struct A {
virtual void f();
};
struct B {
virtual void f();
};
struct __attribute__((visibility("protected"))) C : A, B {
virtual void c();
virtual void f();
};
// CHECK: define protected void @_ZThn8_N5Test41C1fEv(
void C::f() { }
}
// This is from Test5:
// CHECK: define linkonce_odr void @_ZTv0_n24_N5Test51B1fEv
// Check that the thunk gets internal linkage.
namespace {
struct A {
virtual void f();
};
struct B {
virtual void f();
};
struct C : A, B {
virtual void c();
virtual void f();
};
// CHECK: define internal void @_ZThn8_N12_GLOBAL__N_11C1fEv(
void C::f() { }
}
// Force C::f to be used.
void f() {
C c;
c.f();
}
namespace Test5 {
// Check that the thunk for 'B::f' gets the same linkage as the function itself.
struct A {
virtual void f();
};
struct B : virtual A {
virtual void f() { }
};
void f(B b) {
b.f();
}
}
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