38 lines
1.2 KiB
C++
38 lines
1.2 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-has-no-incomplete-ranges
|
|
|
|
// AppleClang 12.0.0 doesn't fully support ranges/concepts
|
|
// XFAIL: apple-clang-12.0.0
|
|
|
|
// <span>
|
|
|
|
// template <class It, class End>
|
|
// constexpr explicit(Extent != dynamic_extent) span(It first, End last);
|
|
// Requires: [first, last) shall be a valid range.
|
|
// If Extent is not equal to dynamic_extent, then last - first shall be equal to Extent.
|
|
//
|
|
|
|
#include <span>
|
|
#include <iterator>
|
|
|
|
|
|
template<class T, size_t Extent>
|
|
std::span<T, Extent> createImplicitSpan(T* first, T* last) {
|
|
return {first, last}; // expected-error {{chosen constructor is explicit in copy-initialization}}
|
|
}
|
|
|
|
int main(int, char**) {
|
|
// explicit constructor necessary
|
|
int arr[] = {1, 2, 3};
|
|
createImplicitSpan<int, 1>(std::begin(arr), std::end(arr));
|
|
|
|
return 0;
|
|
}
|