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namespace;
include rt;
// the bump arena: interior pointers, a rewind, and a full bump.
fn main() {
let a = rt.arena_new(32), p, q, r;
p = rt.arena_alloc(a, 4);
p[0] = 7;
q = rt.arena_alloc(a, 4);
rt.put_n(q - p); rt.put_c(' ');
rt.put_n(p[0]); rt.put_c(' ');
rt.put_n(q[0]); rt.put_c(' ');
rt.arena_reset(a);
r = rt.arena_alloc(a, 4);
rt.put_n(r == p); rt.put_c(' ');
rt.put_n(rt.arena_alloc(a, 100) == 0); rt.put_c(10);
rt.free(d*a);
return 0;
}
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