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To correct this problem, the the error handling code in verify_list() is modified so that it no longer frees list. This change ensures that list is freed only once, at the same level of abstraction, in the process_list() function.
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int verify_size(char const *list, size_t size) {
if (size < MIN_SIZE_ALLOWED) {
/* Handle Error Condition */
return -1;
}
return 0;
}
void process_list(size_t number) {
char *list = (char *)malloc(number);
if (list == NULL) {
/* Handle Allocation Error */
}
if (verify_size(list, number) == -1) {
free(list);
return;
}
/* Continue Processing list */
free(list);
}
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