f5256e16df
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@103516 91177308-0d34-0410-b5e6-96231b3b80d8
76 lines
1.7 KiB
C++
76 lines
1.7 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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// <tuple>
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// template <class... Types> class tuple;
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// template <class... UTypes>
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// tuple& operator=(const tuple<UTypes...>& u);
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#include <tuple>
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#include <string>
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#include <cassert>
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struct B
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{
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int id_;
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explicit B(int i = 0) : id_(i) {}
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};
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struct D
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: B
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{
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explicit D(int i = 0) : B(i) {}
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};
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int main()
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{
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{
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typedef std::tuple<double> T0;
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typedef std::tuple<int> T1;
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T0 t0(2.5);
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T1 t1;
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t1 = t0;
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assert(std::get<0>(t1) == 2);
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}
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{
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typedef std::tuple<double, char> T0;
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typedef std::tuple<int, int> T1;
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T0 t0(2.5, 'a');
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T1 t1;
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t1 = t0;
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assert(std::get<0>(t1) == 2);
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assert(std::get<1>(t1) == int('a'));
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}
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{
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typedef std::tuple<double, char, D> T0;
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typedef std::tuple<int, int, B> T1;
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T0 t0(2.5, 'a', D(3));
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T1 t1;
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t1 = t0;
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assert(std::get<0>(t1) == 2);
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assert(std::get<1>(t1) == int('a'));
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assert(std::get<2>(t1).id_ == 3);
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}
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{
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D d(3);
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D d2(2);
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typedef std::tuple<double, char, D&> T0;
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typedef std::tuple<int, int, B&> T1;
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T0 t0(2.5, 'a', d2);
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T1 t1(1.5, 'b', d);
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t1 = t0;
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assert(std::get<0>(t1) == 2);
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assert(std::get<1>(t1) == int('a'));
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assert(std::get<2>(t1).id_ == 2);
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}
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}
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