| 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<size_t Count> |
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| 13 | // constexpr span<element_type, Count> first() const; |
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| 14 | // |
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| 15 | // Mandates: Count <= Extent is true. |
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| 16 | |
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| 17 | #include <span> |
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| 18 | #include <cstddef> |
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| 19 | |
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| 20 | void f() { |
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| 21 | int array[] = {1, 2, 3, 4}; |
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| 22 | std::span<const int, 4> sp(array); |
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| 23 | |
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| 24 | // Count too large |
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| 25 | [[maybe_unused]] auto s1 = sp.first<5>(); // expected-error@span:* {{span<T, N>::first<Count>(): Count out of range}} |
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| 26 | |
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| 27 | // Count numeric_limits |
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| 28 | [[maybe_unused]] auto s2 = |
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| 29 | sp.first<std::size_t(-1)>(); // expected-error@span:* {{span<T, N>::first<Count>(): Count out of range}} |
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| 30 | } |
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| 31 | |
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