我一直在尝试做一棵树，它有9个孩子，其中一些孩子没有初始化，所以实际上它是一棵可变数量的孩子的树。初始化的孩子的索引被放在一个数组中，数组的大小与树节点应该拥有的孩子的数量相同。在释放整个树的内存分配的同时，我也想释放那个数组。但是我遇到了一个问题，那就是由于某种原因，当我尝试这样做时，出现了一个错误。2这里是编译后完全可执行的代码片段，不过，如果有人愿意帮我调试的话。

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

struct moveNode
{
    int rating;
    // char player;
    int numPossibleMoves, *possibleMoves;
    struct moveNode **children;
};

struct moveNode *moveTreeHead;
struct moveNode *createHeadNode(void);
void initializeNode(struct moveNode *node, char *boardState);

int main()
{
    moveTreeHead = createHeadNode();

    printf("moveTreeHead->possibleMoves[1] %d\n", moveTreeHead->possibleMoves[1]);
    free(moveTreeHead->possibleMoves);
}

void initializeNode(struct moveNode *node, char *boardState)
{
    int i, possibleMovesCounter = -1;
    node->numPossibleMoves = 0;
    for (i = 0; i < 9; i++)
    {
        if (boardState[i] != 'x' && boardState[i] != 'o')
        {
            node->numPossibleMoves++;
        }
    }

    if (node->numPossibleMoves != 0)
    {
        node->possibleMoves = (int *)malloc(sizeof *(node->possibleMoves));
        for (i = 0; i < 9; i++)
        {
            if (boardState[i] != 'x' && boardState[i] != 'o')
            {
                possibleMovesCounter++;
                node->possibleMoves[possibleMovesCounter] = i;
                node->children[i] = (struct moveNode *)malloc(sizeof *(node->children[i]));
                node->children[i]->numPossibleMoves = 0;
            }
        }
    }
    else
    {
        node->possibleMoves = NULL;
    }
}

struct moveNode *createHeadNode()
{
    struct moveNode *ret = (struct moveNode *)malloc(sizeof(struct moveNode));
    ret->children = (struct moveNode **)malloc(sizeof *(ret->children) * 9);
    initializeNode(ret, "012345678");
    return ret;
}

我收到以下调试错误消息：

warning: HEAP[helloworld.exe]:
warning: Heap block at 0000028AA9C23530 modified at 0000028AA9C23544 past requested size of 4

Thread 1 received signal SIGTRAP, Trace/breakpoint trap.
0x00007ffa1046a773 in ntdll!RtlRegisterSecureMemoryCacheCallback () from C:\WINDOWS\SYSTEM32\ntdll.dll

这到底是什么意思？我所要做的就是释放一个用malloc正确分配的整数数组。这里有什么问题？我甚至测试了一下，用printf("moveTreeHead->possibleMoves[1] %d\n", moveTreeHead->possibleMoves[1])创建的数组没有问题。
编辑：问题解决了，谢谢！！@UnholySheep