腾出的malloc失败 [英] free up on malloc fails

问题描述

我有一些这样的事

char *temp, xyz;
temp = (char *)malloc(sizeof(somestring));

xyz = (char *) malloc(sizeof(temp));
xyz= strrchar(temp, "_"); // temp does not contain "_", but need to check for error validation

现在如果我尝试做
    免费（TEMP）;
它的崩溃;

Now If I try to do free(temp); its crashing;

任何想法，我是一个beginer。

any idea, I am a beginer.

推荐答案

我想通了，纠正我，如果我错了，
XYZ只是指着它具有_字符串中的临时位置。当我腾出临时，该位置得到了释放。但XYZ仍然指向该位置，这已经释放。这是我对释放XYZ崩溃的原因。

I figured it out, correct me if I am wrong, xyz is just pointing to the location where it has the "_" in the string temp. As soon as I free up the temp, that location got freed up. but xyz is still pointing to that location, which is already freed. That is the reason I had crash on freeing xyz.

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