copy_assign.fail.cpp [plain text]
#include <future>
#include <cassert>
int main()
{
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
{
typedef int T;
std::promise<T> p;
std::future<T> f0 = p.get_future();
std::future<T> f;
f = f0;
assert(!f0.valid());
assert(f.valid());
}
{
typedef int T;
std::future<T> f0;
std::future<T> f;
f = f0;
assert(!f0.valid());
assert(!f.valid());
}
{
typedef int& T;
std::promise<T> p;
std::future<T> f0 = p.get_future();
std::future<T> f;
f = f0;
assert(!f0.valid());
assert(f.valid());
}
{
typedef int& T;
std::future<T> f0;
std::future<T> f;
f = f0;
assert(!f0.valid());
assert(!f.valid());
}
{
typedef void T;
std::promise<T> p;
std::future<T> f0 = p.get_future();
std::future<T> f;
f = f0;
assert(!f0.valid());
assert(f.valid());
}
{
typedef void T;
std::future<T> f0;
std::future<T> f;
f = f0;
assert(!f0.valid());
assert(!f.valid());
}
#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES
}