forked from OSchip/llvm-project
66 lines
1.3 KiB
C++
66 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 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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// <utility>
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// template<ValueType T, size_t N>
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// requires Swappable<T>
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// void
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// swap(T (&a)[N], T (&b)[N]);
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#include <utility>
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#include <cassert>
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#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
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#include <memory>
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#endif
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void
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test()
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{
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int i[3] = {1, 2, 3};
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int j[3] = {4, 5, 6};
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std::swap(i, j);
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assert(i[0] == 4);
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assert(i[1] == 5);
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assert(i[2] == 6);
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assert(j[0] == 1);
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assert(j[1] == 2);
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assert(j[2] == 3);
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}
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#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
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void
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test1()
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{
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std::unique_ptr<int> i[3];
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for (int k = 0; k < 3; ++k)
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i[k].reset(new int(k+1));
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std::unique_ptr<int> j[3];
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for (int k = 0; k < 3; ++k)
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j[k].reset(new int(k+4));
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std::swap(i, j);
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assert(*i[0] == 4);
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assert(*i[1] == 5);
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assert(*i[2] == 6);
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assert(*j[0] == 1);
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assert(*j[1] == 2);
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assert(*j[2] == 3);
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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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test();
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#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
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test1();
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#endif
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}
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