| 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 | |
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| 9 | // UNSUPPORTED: c++03, c++11, c++14, c++17 |
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| 10 | |
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| 11 | // <span> |
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| 12 | |
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| 13 | // constexpr explicit(extent != dynamic_extent) span(std::initializer_list<value_type> il); // Since C++26 |
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| 14 | |
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| 15 | #include <span> |
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| 16 | #include <utility> |
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| 17 | |
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| 18 | #include "test_macros.h" |
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| 19 | |
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| 20 | // Test P2447R4 "Annex C examples" |
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| 21 | |
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| 22 | void one(std::pair<int, int>); |
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| 23 | void one(std::span<const int>); |
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| 24 | |
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| 25 | void two(std::span<const int, 2>); |
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| 26 | |
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| 27 | void test_P2447R4_annex_c_examples() { |
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| 28 | // 1. Overload resolution is affected |
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| 29 | #if TEST_STD_VER >= 26 |
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| 30 | // expected-error@+1 {{call to 'one' is ambiguous}} |
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| 31 | one({1, 2}); |
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| 32 | #else |
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| 33 | // expected-no-diagnostics |
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| 34 | one({1, 2}); |
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| 35 | #endif |
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| 36 | |
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| 37 | // 2. The `initializer_list` ctor has high precedence |
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| 38 | #if TEST_STD_VER >= 26 |
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| 39 | // expected-error@+1 {{chosen constructor is explicit in copy-initialization}} |
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| 40 | two({{1, 2}}); |
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| 41 | #else |
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| 42 | // expected-no-diagnostics |
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| 43 | two({{1, 2}}); |
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| 44 | #endif |
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| 45 | |
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| 46 | // 3. Implicit two-argument construction with a highly convertible value_type |
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| 47 | // --> tested in "initializer_list.pass.cpp" |
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| 48 | } |
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| 49 | |
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