cxx/test/thread/futures/futures.tas/futures.task.members/ctor_copy.fail.cpp
Howard Hinnant 7de47902d0 Implemented N3194
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@120458 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-30 20:23:32 +00:00

47 lines
1.1 KiB
C++

//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// <future>
// class packaged_task<R(ArgTypes...)>
// packaged_task(packaged_task&) = delete;
#include <future>
#include <cassert>
class A
{
long data_;
public:
explicit A(long i) : data_(i) {}
long operator()(long i, long j) const {return data_ + i + j;}
};
int main()
{
{
std::packaged_task<double(int, char)> p0(A(5));
std::packaged_task<double(int, char)> p(p0);
assert(!p0.valid());
assert(p.valid());
std::future<double> f = p.get_future();
p(3, 'a');
assert(f.get() == 105.0);
}
{
std::packaged_task<double(int, char)> p0;
std::packaged_task<double(int, char)> p(p0);
assert(!p0.valid());
assert(!p.valid());
}
}