如何避免错误：terminate在抛出一个'std :: logic_error'实例后调用what（）：basic_string :: _ S_construct null无效 [英] How to avoid the error: terminate called after throwing an instance of 'std::logic_error' what(): basic_string::_S_construct null not valid

问题描述

if(player!=NULL)
    player->shuffled();

我这样做是为了避免传递null引用到字符串构造函数，错误。

I do such things to avoid passing a null reference to a string constructor, but when compiling it still comes to error.

推荐答案

某处，你调用 std :: string 构造函数与 const char * 值NULL。

Somewhere, somehow, you're calling the std::string constructor with the const char* value NULL.

为了避免这个问题。不要这样做。

To avoid the problem. Don't do that.

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