否，在堆栈分配的变量上调用 delete 是不安全的.你应该只对 new 创建的东西调用 delete.

No, it is not safe to call delete on a stack-allocated variable. You should only call delete on things created by new.

• 对于每个 malloc 或 calloc，应该只有一个 free.
• 对于每个 new，应该恰好有一个 delete.
• 对于每个 new[]，应该恰好有一个 delete[].
• 对于每个堆栈分配，不应有明确的释放或删除.在适用的情况下，会自动调用析构函数.

• For each malloc or calloc, there should be exactly one free.
• For each new there should be exactly one delete.
• For each new[] there should be exactly one delete[].
• For each stack allocation, there should be no explicit freeing or deletion. The destructor is called automatically, where applicable.

一般情况下，您不能混合搭配其中任何一种，例如没有 free-ing 或 delete[]-ing new 对象.这样做会导致未定义的行为.

In general, you cannot mix and match any of these, e.g. no free-ing or delete[]-ing a new object. Doing so results in undefined behavior.