在双删除中会发生什么？
问题描述：
Obj *op = new Obj;
Obj *op2 = op;
delete op;
delete op2; // What happens here?
当你不小心删除时，会发生什么？有关系吗？是编译器会抛出一个错误？
What's the worst that can happen when you accidentally double delete? Does it matter? Is the compiler going to throw an error?
答
它导致未定义的行为。任何事情都可能发生。实际上，运行时崩溃可能是我期望的。
It causes undefined behaviour. Anything can happen. In practice, a runtime crash is probably what I'd expect.