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c76d8f7ff4
This is a breaking change. The SFINAE required is instantiated the second the class is instantiated, and this can cause hard SFINAE errors when applied to references to incomplete types. Ex. struct IncompleteType; extern IncompleteType it; std::tuple<IncompleteType&> t(it); // SFINAE will blow up. git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@276598 91177308-0d34-0410-b5e6-96231b3b80d8
57 lines
1.3 KiB
C++
57 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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// <tuple>
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// template <class... Types> class tuple;
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// tuple& operator=(tuple&& u);
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// UNSUPPORTED: c++98, c++03
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#include <tuple>
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#include <utility>
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#include <cassert>
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#include "MoveOnly.h"
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int main()
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{
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{
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typedef std::tuple<> T;
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T t0;
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T t;
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t = std::move(t0);
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}
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{
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typedef std::tuple<MoveOnly> T;
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T t0(MoveOnly(0));
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T t;
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t = std::move(t0);
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assert(std::get<0>(t) == 0);
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}
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{
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typedef std::tuple<MoveOnly, MoveOnly> T;
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T t0(MoveOnly(0), MoveOnly(1));
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T t;
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t = std::move(t0);
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assert(std::get<0>(t) == 0);
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assert(std::get<1>(t) == 1);
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}
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{
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typedef std::tuple<MoveOnly, MoveOnly, MoveOnly> T;
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T t0(MoveOnly(0), MoveOnly(1), MoveOnly(2));
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T t;
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t = std::move(t0);
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assert(std::get<0>(t) == 0);
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assert(std::get<1>(t) == 1);
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assert(std::get<2>(t) == 2);
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}
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}
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