char *和delete问题 [英] Problems with char * and delete
问题描述
在尝试取消分配此指针时,我遇到了棘手的问题.
I have tough problems while trying to de-allocate this pointer.
我遇到此错误:
对象0x10007fd20错误:未分配释放的指针
error for object 0x10007fd20: pointer being freed was not allocated
我具有以下结构:
char * doSomething() //I cannot change this method.
{
return "hello world";
};
int main ()
{
char * var= doSomething();
cout<< var<<endl;
delete[] var;
};
请考虑我不能使用字符串,因为 doSomething方法
没有提供给我.由于我经常使用它,..一段时间后,由于RAM内存的使用,应用程序崩溃了.
Please consider that I cannot use string, because I'm not being provided with the doSomething method
. As I'm using it a lot.. after a while the app collapses because of the RAM memory use.
推荐答案
您只能删除使用相应的 operator new
分配的内容.字符串文字具有静态存储期限.它们不是动态分配的.根据C ++标准
You can delete only what was allocated using the corresponding operator new
. String literals have static storage duration. They are not dynamically allocated. According to the C++ Standard
还引用了8个普通字符串文字和UTF-8字符串文字作为狭窄的字符串文字.窄字符串文字的类型为数组n const char",其中n是如下定义的字符串的大小,并且具有静态存储期限(3.7).
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