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Diffstat (limited to 'gcc-4.9/libstdc++-v3/testsuite/20_util/forward/f_neg.cc')
-rw-r--r-- | gcc-4.9/libstdc++-v3/testsuite/20_util/forward/f_neg.cc | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/gcc-4.9/libstdc++-v3/testsuite/20_util/forward/f_neg.cc b/gcc-4.9/libstdc++-v3/testsuite/20_util/forward/f_neg.cc new file mode 100644 index 000000000..c4914f0f7 --- /dev/null +++ b/gcc-4.9/libstdc++-v3/testsuite/20_util/forward/f_neg.cc @@ -0,0 +1,90 @@ +// { dg-do compile } +// { dg-options "-std=gnu++0x" } + +// Copyright (C) 2010-2014 Free Software Foundation, Inc. +// +// This file is part of the GNU ISO C++ Library. This library is free +// software; you can redistribute it and/or modify it under the +// terms of the GNU General Public License as published by the +// Free Software Foundation; either version 3, or (at your option) +// any later version. +// +// This library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU General Public License along +// with this library; see the file COPYING3. If not see +// <http://www.gnu.org/licenses/>. + +// { dg-error "static assertion failed" "" { target *-*-* } 89 } + +#include <utility> + +template <class T> + struct C + { + T t_; + + C() {} + + explicit C(const T& t) : t_(t) { } + + template <class U, + class = typename std::enable_if + < + std::is_convertible<U, T>::value + >::type> + C(C<U>&& c) : t_(std::forward<T>(c.t_)) { } + }; + +class B; + +class A +{ + int data_; + + friend class B; +public: + explicit + A(int data = 1) + : data_(data) { } + + ~A() { data_ = -1; } + + void test() const + { + __builtin_abort(); + } +}; + +class B +{ + int data_; +public: + explicit + B(int data = 1) + : data_(data) { } + + B(const A& a) : data_(a.data_) { } + + B(A&& a) : data_(a.data_) { a.data_ = 100; } + + ~B() { data_ = -1; } + + void test() const + { + __builtin_abort(); + } +}; + +// http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2009/n2951.html +// Test F. +int main() +{ + A a(3); + C<A> ca(a); + C<const B&> cb(std::move(ca)); + cb.t_.test(); +} |