b64f8b07c1
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@119395 91177308-0d34-0410-b5e6-96231b3b80d8
85 lines
1.9 KiB
C++
85 lines
1.9 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 dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// <vector>
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// template <class... Args> void emplace_back(Args&&... args);
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#include <vector>
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#include <cassert>
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#include "../../../stack_allocator.h"
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#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
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class A
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{
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int i_;
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double d_;
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A(const A&);
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A& operator=(const A&);
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public:
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A(int i, double d)
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: i_(i), d_(d) {}
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A(A&& a)
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: i_(a.i_),
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d_(a.d_)
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{
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a.i_ = 0;
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a.d_ = 0;
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}
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A& operator=(A&& a)
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{
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i_ = a.i_;
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d_ = a.d_;
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a.i_ = 0;
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a.d_ = 0;
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return *this;
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}
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int geti() const {return i_;}
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double getd() const {return d_;}
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};
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#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES
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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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std::vector<A> c;
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c.emplace_back(2, 3.5);
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assert(c.size() == 1);
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assert(c.front().geti() == 2);
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assert(c.front().getd() == 3.5);
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c.emplace_back(3, 4.5);
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assert(c.size() == 2);
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assert(c.front().geti() == 2);
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assert(c.front().getd() == 3.5);
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assert(c.back().geti() == 3);
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assert(c.back().getd() == 4.5);
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}
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{
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std::vector<A, stack_allocator<A, 4> > c;
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c.emplace_back(2, 3.5);
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assert(c.size() == 1);
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assert(c.front().geti() == 2);
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assert(c.front().getd() == 3.5);
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c.emplace_back(3, 4.5);
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assert(c.size() == 2);
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assert(c.front().geti() == 2);
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assert(c.front().getd() == 3.5);
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assert(c.back().geti() == 3);
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assert(c.back().getd() == 4.5);
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}
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#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES
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}
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