Question

我正在尝试初始化一个指向struct TLDNode的指针数组。我通过遍历树并按顺序添加节点来完成此操作。但是，我正在使用valgrind的memcheck工具，并指出：

Conditional jump or move depends on uninitialised value(s)
    at 0x400D55: main (tldmonitor.c:88)
  Uninitialised value was created by a heap allocation
    at 0x4C28C0F: malloc (vg_replace_malloc.c:299)
    by 0x4014CA: tldlist_iter_create (tldlist.c:146)
    by 0x400CC8: main (tldmonitor.c:83)

我很困惑，因为我正在初始化，即使它处于不同的功能。

代码： tldlist.c

static void inorder_add(TLDIterator *iter, TLDNode *c) {
    if(c != NULL) {
        inorder_add(iter,c->left);
        *(iter->array + iter->index) = c;//intialize each index
        iter->index++;
        inorder_add(iter,c->right);
    }
}

TLDIterator* tldlist_iter_create(TLDList *tld) {
    TLDIterator *iter = malloc(sizeof(TLDIterator));
    if(iter != NULL) {
        iter->length = tldlist_count(tld);
        iter->index = 0;
        iter->array = malloc(sizeof(TLDNode*)*iter->length);//line 146
        inorder_add(iter,tld->root);
        iter->index = 0;
        return iter;
    }
    return NULL;
}

TLDNode* tldlist_iter_next(TLDIterator* iter) {
    if(iter->index < iter->length) {
        TLDNode *next = *(iter->array+iter->index);
        iter->index++;
        return next;
    }   
    return NULL;
}

tldmonitor.c：

tld = tldlist_create(begin, end);
//nodes are added in between
total = (double)tldlist_count(tld);
it = tldlist_iter_create(tld); //line 83
while ((n = tldlist_iter_next(it))) {//line 88 (84-87 not needed)
        printf("%6.2f %s\n", 100.0 * (double)tldnode_count(n)/total, tldnode_tldname(n));
    }

tldmonitor应打印出树中每个键的计数百分比。但是，tldmonitor.c是作为入门代码提供的，所以我的问题必须在tldlist.c中。

为什么说我没有初始化？是因为我是在一个单独的功能中做到的吗？或者我实际上没有以某种方式初始化数组？

数组指针没有初始化

0 个答案: