#include <QSharedPointer>

class MyClass
{
public:
    MyClass()
    {
        qDebug("MyClass");
        throw std::exception();
    }

    ~MyClass()
    {
        qDebug("~MyClass()");
    }
};

int main(int argc, char *argv[])
{
    try
    {
        QSharedPointer<MyClass> withCreate = QSharedPointer<MyClass>::create();
    }
    catch (const std::exception&)
    {
    }

    try
    {
        QSharedPointer<MyClass> withoutCreate( new MyClass() );
    }
    catch (const std::exception&)
    {
    }
}

MyClass()
~MyClass()
MyClass()

MyClass()
MyClass()