C 设置大小时内存错误

下面是我写的集合结构：

struct state_set
{
    struct state ***state_array;
    size_t *slot_sizes;
    size_t *slot_memory;
};

这是一个初始值设定项：

struct state_set *state_set_init()
{
    struct state_set *new_set =
            malloc(sizeof(struct state_set));
    new_set->state_array = malloc(ARRAY_SIZE * sizeof(struct state**));
    new_set->slot_sizes = malloc(ARRAY_SIZE * sizeof(size_t));
    new_set->slot_memory = malloc(ARRAY_SIZE * sizeof(size_t));
    for (int i = 0; i < ARRAY_SIZE; i++)
    {
        new_set->slot_sizes[i] = 0;
        new_set->slot_memory[i] = INITIAL_SLOT_SIZE;
    }
    for (int i = 0; i < ARRAY_SIZE; i++)
    {
        new_set->state_array[i] =
                malloc(new_set->slot_memory[i] * sizeof(struct state*));
        error_validate_pointer(new_set->state_array[i]);
    }

    return new_set;
}

问题是-为什么

state\u set\u resize\u slot（）

不起作用？我看不出这个realloc有任何错误，我已经盯着这个代码看了至少一个小时了。（很明显，realloc是我所有麻烦的原因）。或者，可能大小调整函数编写得很好，我应该在其他地方查找错误

编辑：

如果有人想看一看完整的代码，可以在这里找到： （散列函数返回1而不是h，因为我正在测试冲突，而且初始值设定项和析构函数也过时了，现在我正在malloc'ing slot_内存和slot_大小的数据，而不是使用堆栈）

下面是运行程序的valgrind输出，该程序添加了几个要设置的状态（错误大约为第三个）：

---

在您的函数中，您将指针放入

以调整大小，然后
realloc
内存，但您从未将新指针设置回
set->state\u数组[slot\u i]
，因此它将丢失，您继续使用旧的、已释放的内存空间，并将指向其边界之外

void state_set_resize_slot(struct state_set *set, int slot_i)
{
    struct state **to_resize = set->state_array[slot_i];
    to_resize =
            realloc(to_resize, set->slot_memory[slot_i] * 2 * sizeof(struct state*));
    error_validate_pointer(to_resize);
    set->slot_memory[slot_i] *= 2;
}

==20979== Invalid write of size 8
==20979==    at 0x400C21: state_set_add (state_set.c:93)
==20979==    by 0x400781: main (main.c:22)
==20979==  Address 0x51f2320 is 0 bytes inside a block of size 40 free'd
==20979==    at 0x4C2BB1C: realloc (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==20979==    by 0x4009CD: state_set_resize_slot (state_set.c:54)
==20979==    by 0x400B23: state_set_add (state_set.c:78)
==20979==    by 0x400781: main (main.c:22)
==20979== 
==20979== Invalid free() / delete / delete[] / realloc()
==20979==    at 0x4C2BB1C: realloc (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==20979==    by 0x4009CD: state_set_resize_slot (state_set.c:54)
==20979==    by 0x400B23: state_set_add (state_set.c:78)
==20979==    by 0x4007B2: main (main.c:23)
==20979==  Address 0x51f2320 is 0 bytes inside a block of size 40 free'd
==20979==    at 0x4C2BB1C: realloc (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==20979==    by 0x4009CD: state_set_resize_slot (state_set.c:54)
==20979==    by 0x400B23: state_set_add (state_set.c:78)
==20979==    by 0x400781: main (main.c:22)
==20979== 
a.out: state_set.c:20: error_validate_pointer: Assertion `ptr != ((void *)0)' failed.