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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// <memory>
// shared_ptr
// explicit operator bool() const;
#include <memory>
#include <cassert>
#include <type_traits>
#include "test_macros.h"
struct A {
int a;
virtual ~A() {}
};
struct B : A {};
int main(int, char**)
{
static_assert(std::is_constructible<bool, std::shared_ptr<A> >::value, "");
static_assert(!std::is_convertible<std::shared_ptr<A>, bool>::value, "");
{
const std::shared_ptr<int> p(new int(32));
assert(p);
}
{
const std::shared_ptr<int> p;
assert(!p);
}
#if !defined(TEST_HAS_NO_RTTI)
{
std::shared_ptr<A> basePtr = std::make_shared<B>();
std::shared_ptr<B> sp = std::dynamic_pointer_cast<B>(basePtr);
assert(sp);
}
#endif
return 0;
}
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