内存泄漏，realloc（）函数

Question

Here I want to extract words from 'text' string. Dr. Memory says to me I have memory leak at line words = (char**) realloc(words, (amount + 1) * sizeof(char*)); What is the problem?

p = strtok(text, " ");
while(p != NULL) {
    words = (char**) realloc(words, (amount + 1) * sizeof(char*));
    words[amount] = strdup(p);
    amount ++;
    p = strtok(NULL, " ");
}
for(i = 0; i < amount; i ++) {
       free(words[i]);
}

Answer 1

Whn you use strdup it will allocate a new string. So before you release the array, you need to free each string you allocated with strdup .

You are not freeing the whole array though. The part you are allocating with realloc .

So what is missing is a simple:

free(words);