44 lines
1.6 KiB
C++
44 lines
1.6 KiB
C++
//===----------------------------------------------------------------------===//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
// UNSUPPORTED: c++03, c++11, c++14, c++17
|
|
// UNSUPPORTED: libcpp-no-concepts
|
|
// UNSUPPORTED: gcc-10
|
|
// UNSUPPORTED: clang-10
|
|
|
|
// unspecified begin;
|
|
|
|
#include <ranges>
|
|
|
|
#include <type_traits>
|
|
|
|
using cend_t = decltype(std::ranges::cend);
|
|
|
|
// clang-format off
|
|
template <class T>
|
|
requires(!std::invocable<cend_t&, T>)
|
|
void f() {}
|
|
// clang-format on
|
|
|
|
void test() {
|
|
struct incomplete;
|
|
f<incomplete(&)[]>();
|
|
// expected-error@*:* {{"`std::ranges::begin` is SFINAE-unfriendly on arrays of an incomplete type."}}
|
|
// expected-error@*:* {{"`std::ranges::end` is SFINAE-unfriendly on arrays of an incomplete type."}}
|
|
f<incomplete(&)[10]>();
|
|
// expected-error@*:* {{"`std::ranges::begin` is SFINAE-unfriendly on arrays of an incomplete type."}}
|
|
// expected-error@*:* {{"`std::ranges::end` is SFINAE-unfriendly on arrays of an incomplete type."}}
|
|
// expected-error@-3 {{no matching function for call to 'f'}}
|
|
f<incomplete(&)[2][2]>();
|
|
// expected-error@*:* {{"`std::ranges::begin` is SFINAE-unfriendly on arrays of an incomplete type."}}
|
|
// expected-error@-2 {{no matching function for call to 'f'}}
|
|
|
|
// This is okay because calling `std::ranges::end` on any rvalue is ill-formed.
|
|
f<incomplete(&&)[10]>();
|
|
}
|