cxx/test/utilities/memory/util.smartptr/util.smartptr.weak/util.smartptr.weak.const/default.pass.cpp

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//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// <memory>
// template<class T> class weak_ptr
// weak_ptr();
#include <memory>
#include <cassert>
struct A;
int main()
{
std::weak_ptr<A> p;
assert(p.use_count() == 0);
}