forked from OSchip/llvm-project
72 lines
1.9 KiB
C++
72 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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// <tuple>
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// template <class... Types> class tuple;
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// tuple(tuple&& u);
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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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struct ConstructsWithTupleLeaf
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{
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ConstructsWithTupleLeaf() {}
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ConstructsWithTupleLeaf(ConstructsWithTupleLeaf const &) { assert(false); }
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ConstructsWithTupleLeaf(ConstructsWithTupleLeaf &&) {}
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template <class T>
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ConstructsWithTupleLeaf(T t)
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{ assert(false); }
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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<> T;
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T t0;
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T t = std::move(t0);
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((void)t); // Prevent unused warning
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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 = 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 = 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 = 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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// A bug in tuple caused __tuple_leaf to use its explicit converting constructor
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// as its move constructor. This tests that ConstructsWithTupleLeaf is not called
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// (w/ __tuple_leaf)
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{
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typedef std::tuple<ConstructsWithTupleLeaf> d_t;
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d_t d((ConstructsWithTupleLeaf()));
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d_t d2(static_cast<d_t &&>(d));
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}
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}
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