namespace;
include rt;

// a pointer to the start of a live heap block is checked against the block's
// payload, which a buddy block rounds up: rt.new(4) holds 11 words. a pointer
// into the middle of a block, or to memory that is not a heap block, is not
// checked. a char is a word, so a char* counts words.
int main() {
	int* p = rt.new(4); int* q; char* c = rt.new(2); int i = 10;
	p[i] = 3; rt.put_n(p[i]); rt.put_c(10);
	q = p + 1; i = 10; rt.put_n(q[i - 1] - 3); rt.put_c(10);
	i = 2; c[i] = 'x'; rt.put_c(c[i]); rt.put_c(10);
	i = 11;
	rt.put_n(p[i]); rt.put_c(10);
	return 0;
}