演示C++在構(gòu)造函數(shù)中拋出異常時，不調(diào)用析構(gòu)函數(shù)，導致資源不能釋放的一種解決方法。

namespace TEST
{
void exception()
{
class A
{
public:
A()
{
cout<<"I am in A."<<endl;
try
{
m_pBuf = new char[100];

throw std::runtime_error("test");
}
catch(...)
{
cleanup();
}
}

~A()
{
cout<<"I will out A."<<endl;
}

private:
char* m_pBuf;

void cleanup()
{
cout<<"i am in cleanup."<<endl;
}
};

A a;

}
}

int main()
{
try
{
TEST::exception();
}
catch(exception& error)
{
cout<<"info is "<< error.what()<<endl;
}
catch (...)
{
cout<<"issue a exception."<<endl;
}

getchar();

return 1;
}