73d21a4f07
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@113086 91177308-0d34-0410-b5e6-96231b3b80d8
48 lines
1.3 KiB
C++
48 lines
1.3 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// <unordered_set>
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// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
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// class Alloc = allocator<Value>>
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// class unordered_set
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// template <class... Args>
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// pair<iterator, bool> emplace(Args&&... args);
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#include <unordered_set>
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#include <cassert>
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#include "../../Emplaceable.h"
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int main()
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{
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#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
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{
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typedef std::unordered_set<Emplaceable> C;
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typedef std::pair<C::iterator, bool> R;
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C c;
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R r = c.emplace();
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assert(c.size() == 1);
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assert(*r.first == Emplaceable());
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assert(r.second);
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r = c.emplace(Emplaceable(5, 6));
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assert(c.size() == 2);
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assert(*r.first == Emplaceable(5, 6));
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assert(r.second);
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r = c.emplace(5, 6);
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assert(c.size() == 2);
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assert(*r.first == Emplaceable(5, 6));
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assert(!r.second);
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}
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#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES
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}
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