Comment by AnthonyMouse

> In C you could have made some 'safe buffer' struct together with some safe set of functions. But people didn't do that.

Exactly.

  struct buffer
  {
	void* data;
	size_t len;
  };

  void smemcpy(buffer* dst, buffer* src, size_t n)
  {
	if(dst->len < n || src->len < n)
		abort();
	memcpy(dst->data, src->data, n);
  }

I mean how hard is that, honestly?

Buffer bugs in C don't come from the language, they come from the tendency of C programmers to value performance highly. "I just checked that the buffer is big enough, I don't need memcpy to waste cycles checking it again. I don't need that length variable sucking up memory when I know how big the buffer is." Except when you do.