| 1 | //===---------------------------------------------------------------------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===---------------------------------------------------------------------===// |
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| 8 | // UNSUPPORTED: c++03, c++11, c++14, c++17 |
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| 9 | |
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| 10 | // <span> |
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| 11 | |
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| 12 | // template <class It, class End> |
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| 13 | // constexpr explicit(Extent != dynamic_extent) span(It first, End last); |
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| 14 | // Requires: [first, last) shall be a valid range. |
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| 15 | // If Extent is not equal to dynamic_extent, then last - first shall be equal to Extent. |
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| 16 | // |
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| 17 | |
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| 18 | #include <span> |
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| 19 | #include <iterator> |
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| 20 | |
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| 21 | template<class T, std::size_t Extent> |
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| 22 | std::span<T, Extent> createImplicitSpan(T* first, T* last) { |
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| 23 | return {first, last}; // expected-error {{chosen constructor is explicit in copy-initialization}} |
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| 24 | } |
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| 25 | |
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| 26 | void f() { |
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| 27 | // explicit constructor necessary |
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| 28 | int arr[] = {1, 2, 3}; |
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| 29 | createImplicitSpan<int, 1>(std::begin(arr&: arr), std::end(arr&: arr)); |
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| 30 | } |
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| 31 | |
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