forked from OSchip/llvm-project
36 lines
1.0 KiB
C++
36 lines
1.0 KiB
C++
// RUN: %clang_cc1 -fsyntax-only -verify %s
|
|
|
|
enum copy_traits { movable = 1 };
|
|
|
|
template <int>
|
|
struct optional_ctor_base {};
|
|
template <typename T>
|
|
struct ctor_copy_traits {
|
|
// this would produce a c++98-compat warning, which would erroneously get the
|
|
// no-matching-function-call error's notes attached to it (or suppress those
|
|
// notes if this diagnostic was suppressed, as it is in this case)
|
|
static constexpr int traits = copy_traits::movable;
|
|
};
|
|
template <typename T>
|
|
struct optional : optional_ctor_base<ctor_copy_traits<T>::traits> {
|
|
template <typename U>
|
|
constexpr optional(U&& v);
|
|
};
|
|
struct A {};
|
|
struct XA {
|
|
XA(const A&);
|
|
};
|
|
struct B {};
|
|
struct XB {
|
|
XB(const B&);
|
|
XB(const optional<B>&);
|
|
};
|
|
struct YB : XB {
|
|
using XB::XB;
|
|
};
|
|
void InsertRow(const XA&, const YB&); // expected-note {{candidate function not viable: no known conversion from 'int' to 'const XA' for 1st argument}}
|
|
void ReproducesBugSimply() {
|
|
InsertRow(3, B{}); // expected-error {{no matching function for call to 'InsertRow'}}
|
|
}
|
|
|