| 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 | // <stack> |
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| 10 | |
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| 11 | // const_reference top() const; |
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| 12 | |
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| 13 | #include <stack> |
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| 14 | #include <cassert> |
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| 15 | |
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| 16 | #include "test_macros.h" |
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| 17 | |
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| 18 | int main(int, char**) |
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| 19 | { |
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| 20 | std::stack<int> q; |
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| 21 | assert(q.size() == 0); |
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| 22 | q.push(1); |
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| 23 | q.push(2); |
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| 24 | q.push(3); |
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| 25 | const std::stack<int>& cqr = q; |
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| 26 | const int& cir = cqr.top(); |
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| 27 | assert(cir == 3); |
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| 28 | |
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| 29 | return 0; |
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| 30 | } |
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| 31 | |
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