cJSON *cJSON_GetObjectItem( cJSON *object, const char *string )
{
	cJSON *c = object->child;
	while ( c && cJSON_strcasecmp( c->string, string ) )
		c = c->next;
	return c;
}
The program copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow.