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1 | // Copyright 2013 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 | #![allow(unused_variables)] | |
12 | #![allow(non_camel_case_types)] | |
13 | #![deny(dead_code)] | |
85aaf69f | 14 | #![feature(libc)] |
1a4d82fc JJ |
15 | |
16 | #![crate_type="lib"] | |
17 | ||
18 | extern crate libc; | |
19 | ||
20 | pub use extern_foo as x; | |
21 | extern { | |
c34b1796 | 22 | pub fn extern_foo(); |
1a4d82fc JJ |
23 | } |
24 | ||
25 | struct Foo; //~ ERROR: struct is never used | |
26 | impl Foo { | |
27 | fn foo(&self) { //~ ERROR: method is never used | |
28 | bar() | |
29 | } | |
30 | } | |
31 | ||
32 | fn bar() { //~ ERROR: function is never used | |
33 | fn baz() {} //~ ERROR: function is never used | |
34 | ||
35 | Foo.foo(); | |
36 | baz(); | |
37 | } | |
38 | ||
39 | // no warning | |
40 | struct Foo2; | |
41 | impl Foo2 { fn foo2(&self) { bar2() } } | |
42 | fn bar2() { | |
43 | fn baz2() {} | |
44 | ||
45 | Foo2.foo2(); | |
46 | baz2(); | |
47 | } | |
48 | ||
49 | pub fn pub_fn() { | |
50 | let foo2_struct = Foo2; | |
51 | foo2_struct.foo2(); | |
52 | ||
53 | blah::baz(); | |
54 | } | |
55 | ||
56 | mod blah { | |
57 | use libc::size_t; | |
58 | // not warned because it's used in the parameter of `free` and return of | |
59 | // `malloc` below, which are also used. | |
60 | enum c_void {} | |
61 | ||
62 | extern { | |
63 | fn free(p: *const c_void); | |
64 | fn malloc(size: size_t) -> *const c_void; | |
65 | } | |
66 | ||
67 | pub fn baz() { | |
68 | unsafe { free(malloc(4)); } | |
69 | } | |
70 | } | |
71 | ||
72 | enum c_void {} //~ ERROR: enum is never used | |
73 | extern { | |
74 | fn free(p: *const c_void); //~ ERROR: foreign function is never used | |
75 | } | |
76 | ||
77 | // Check provided method | |
78 | mod inner { | |
79 | pub trait Trait { | |
80 | fn f(&self) { f(); } | |
81 | } | |
82 | ||
83 | impl Trait for isize {} | |
84 | ||
85 | fn f() {} | |
86 | } | |
87 | ||
88 | pub fn foo() { | |
c34b1796 | 89 | let a: &inner::Trait = &1_isize; |
1a4d82fc JJ |
90 | a.f(); |
91 | } |