llvm-project

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//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// <map>
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// key_compare key_comp() const;
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#include <map>
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#include <cassert>
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#include <string>
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int main(int, char**) {
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    typedef std::map<int, std::string> map_type;
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    map_type m;
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    std::pair<map_type::iterator, bool> p1 = m.insert(map_type::value_type(1, "abc"));
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    std::pair<map_type::iterator, bool> p2 = m.insert(map_type::value_type(2, "abc"));
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    const map_type& cm = m;
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    assert(cm.key_comp()(p1.first->first, p2.first->first));
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    assert(!cm.key_comp()(p2.first->first, p1.first->first));
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    return 0;
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}
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