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3f10018902
These functions are key to allowing the use of rvalues and variadics
in C++03 mode. Everything works the same as in C++11, except for one
tangentially related case:
struct T {
T(T &&) = default;
};
In C++11, T has a deleted copy constructor. But in C++03 Clang gives
it both a move and a copy constructor. This seems reasonable enough
given the extensions it's using.
The other changes in this patch were the minimal set required
to keep the tests passing after the move/forward change. Most notably
the removal of the `__rv<unique_ptr>` hack that was present
in an attempt to make unique_ptr move only without language support.
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@364063 91177308-0d34-0410-b5e6-96231b3b80d8
39 lines
1.0 KiB
C++
39 lines
1.0 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// This test should pass in C++03 with Clang extensions because Clang does
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// not implicitly delete the copy constructor when move constructors are
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// defaulted using extensions.
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// XFAIL: c++98, c++03
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// test move
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#include <utility>
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#include <cassert>
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struct move_only {
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move_only() {}
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move_only(move_only&&) = default;
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move_only& operator=(move_only&&) = default;
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};
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move_only source() {return move_only();}
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const move_only csource() {return move_only();}
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void test(move_only) {}
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int main(int, char**)
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{
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const move_only ca = move_only();
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// expected-error@+1 {{call to implicitly-deleted copy constructor of 'move_only'}}
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test(std::move(ca));
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return 0;
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}
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