h_malloc
s = h_malloc(len * sizeof(*s));
c = h_malloc(sizeof(*c));
history_t *h = (history_t *) h_malloc(sizeof(*h));
TYPE(History) *h = (TYPE(History) *) h_malloc(sizeof(*h));
ptr = h_malloc((max_size = 1024) * sizeof(*ptr));
ptr = h_malloc((max_size = 1024) * sizeof(*ptr));