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[rustc.git] / src / test / compile-fail / dep-graph-caller-callee.rs
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1// Copyright 2012-2014 The Rust Project Developers. See the COPYRIGHT
2// file at the top-level directory of this distribution and at
3// http://rust-lang.org/COPYRIGHT.
4//
5// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8// option. This file may not be copied, modified, or distributed
9// except according to those terms.
10
11// Test that immediate callers have to change when callee changes, but
12// not callers' callers.
13
54a0048b 14// compile-flags: -Z query-dep-graph
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15
16#![feature(rustc_attrs)]
17#![allow(dead_code)]
18
19fn main() { }
20
21mod x {
22 #[rustc_if_this_changed]
23 pub fn x() { }
24}
25
26mod y {
27 use x;
28
29 // These dependencies SHOULD exist:
30 #[rustc_then_this_would_need(TypeckItemBody)] //~ ERROR OK
31 #[rustc_then_this_would_need(TransCrateItem)] //~ ERROR OK
32 pub fn y() {
33 x::x();
34 }
35}
36
37mod z {
38 use y;
39
40 // These are expected to yield errors, because changes to `x`
41 // affect the BODY of `y`, but not its signature.
42 #[rustc_then_this_would_need(TypeckItemBody)] //~ ERROR no path
43 #[rustc_then_this_would_need(TransCrateItem)] //~ ERROR no path
44 pub fn z() {
45 y::y();
46 }
47}