1/*
2 * Copyright 2017, Data61
3 * Commonwealth Scientific and Industrial Research Organisation (CSIRO)
4 * ABN 41 687 119 230.
5 *
6 * This software may be distributed and modified according to the terms of
7 * the BSD 2-Clause license. Note that NO WARRANTY is provided.
8 * See "LICENSE_BSD2.txt" for details.
9 *
10 * @TAG(DATA61_BSD)
11 */
12connector C {
13    from Procedure;
14    to Procedure;
15}
16
17procedure P {
18    void method();
19}
20
21component Foo {
22    provides P p;
23    uses P q;
24}
25
26assembly {
27    composition {
28        component Foo a;
29        component Foo b;
30        connection C c(from a.p, to b.q);
31        connection C c2(from b.p, to a.r); // <- invalid reference to 'r'.
32    }
33}
34