t.Errorf("depth %d: got (%q, %q, %d), want (%q, %q, %t)",
				test.depth,
				got.Function, got.File, got.Line,
				test.wantFunction, test.wantFile, test.wantLinePositive)
		}
	}
}

func TestAliasingAndClone(t *testing.T) {
	intAttrs := func(from, to int) []Attr {
		var as []Attr
		for i := from; i < to; i++ {
			as = append(as, Int("k", i))
		}
		return as
	}

	check := func(r Record, want []Attr) {