microsoft-abi-nontrivial-covariant-thunk.cpp
554 Bytes
// RUN: %clang_cc1 %s -fno-rtti -emit-llvm-only -o - -triple=i386-pc-win32 -verify
// A is not trivially copyable and must be passed indirectly or with inalloca.
struct A {
A();
A(const A &o);
virtual ~A();
int a;
};
struct B {
B();
int b;
virtual B *clone(A);
};
// Converting from C* to B* requires a this adjustment.
struct C : A, B {
C();
int c;
virtual C *clone(A); // expected-error {{cannot compile this non-trivial argument copy for return-adjusting thunk yet}}
};
B::B() {} // force emission
C::C() {} // force emission