[英]Freeing Dynamic Array of Char*
I have a struct "ListStruct" that is basicly a dynamic array of a struct "Info". 我有一个结构“ ListStruct”,基本上是结构“ Info”的动态数组。 Here is how i create the ListStruct: 这是我创建ListStruct的方法:
void initArray(ListStruct *a, size_t initialSize)
{
a->array = malloc(initialSize * sizeof(Info));
a->used = 0;
a->size = initialSize;
}
The struct "Info" has a few ints in it and it has an int keySize and a char* key. 结构“ Info”中包含一些int,并且具有int keySize和char *键。 This is how i allocate the "char* key" in the Info struct: 这就是我在Info结构中分配“ char *键”的方式:
element->key = malloc(keySize*sizeof(char));
On my freeArray function, i'm getting a "double free or corruption" error right on the 2nd iteration of the loop. 在我的freeArray函数上,我在循环的第二次迭代中收到“双重释放或损坏”错误。 Here is the code: 这是代码:
void freeArray(ListStruct *a)
{
int temp;
for(temp=0; temp<a->used; temp++)
{
free(a->array[temp].key);
a->array[temp].key=NULL;
//reset some ints
}
free(a->array);
a->array = NULL;
a->used = a->size = 0;
}
This is probably a dumb mistake, but what am i doing wrong? 这可能是一个愚蠢的错误,但是我在做什么错呢?
EDIT: found bug. 编辑:发现错误。 Check comments for solution 查看评论以获取解决方案
Found mistake. 发现错误。 I was adding the same Info variable 5 times to the list (for testing). 我将相同的Info变量添加了5次到列表中(用于测试)。 Since it was the same variable, it was the same memory region and i was allocating it once while trying to free it 5 times. 由于它是相同的变量,所以它是相同的内存区域,我在尝试将其释放5次时分配了一次。
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