| 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 | // functional |
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| 12 | |
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| 13 | // template <class F, class... Args> |
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| 14 | // constexpr unspecified bind_front(F&&, Args&&...); |
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| 15 | |
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| 16 | #include <functional> |
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| 17 | |
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| 18 | constexpr int pass(const int n) { return n; } |
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| 19 | |
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| 20 | int simple(int n) { return n; } |
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| 21 | |
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| 22 | template<class T> |
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| 23 | T do_nothing(T t) { return t; } |
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| 24 | |
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| 25 | struct NotMoveConst |
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| 26 | { |
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| 27 | NotMoveConst(NotMoveConst &&) = delete; |
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| 28 | NotMoveConst(NotMoveConst const&) = delete; |
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| 29 | |
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| 30 | NotMoveConst(int) { } |
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| 31 | }; |
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| 32 | |
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| 33 | void testNotMoveConst(NotMoveConst) { } |
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| 34 | |
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| 35 | void f() { |
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| 36 | int n = 1; |
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| 37 | const int c = 1; |
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| 38 | |
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| 39 | auto p = std::bind_front(pass, c); |
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| 40 | static_assert(p() == 1); // expected-error {{static assertion expression is not an integral constant expression}} |
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| 41 | |
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| 42 | auto d = std::bind_front(do_nothing, n); // expected-error {{no matching function for call to 'bind_front'}} |
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| 43 | |
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| 44 | auto t = std::bind_front(testNotMoveConst, NotMoveConst(0)); // expected-error {{no matching function for call to 'bind_front'}} |
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| 45 | } |
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| 46 | |
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