92 lines
1.7 KiB
Rust
92 lines
1.7 KiB
Rust
// Copyright 2013 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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#![allow(unused_variables)]
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#![allow(non_camel_case_types)]
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#![deny(dead_code)]
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#![feature(libc)]
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#![crate_type="lib"]
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extern crate libc;
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pub use extern_foo as x;
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extern {
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pub fn extern_foo();
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}
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struct Foo; //~ ERROR: struct is never used
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impl Foo {
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fn foo(&self) { //~ ERROR: method is never used
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bar()
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}
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}
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fn bar() { //~ ERROR: function is never used
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fn baz() {}
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Foo.foo();
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baz();
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}
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// no warning
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struct Foo2;
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impl Foo2 { fn foo2(&self) { bar2() } }
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fn bar2() {
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fn baz2() {}
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Foo2.foo2();
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baz2();
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}
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pub fn pub_fn() {
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let foo2_struct = Foo2;
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foo2_struct.foo2();
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blah::baz();
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}
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mod blah {
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use libc::size_t;
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// not warned because it's used in the parameter of `free` and return of
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// `malloc` below, which are also used.
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enum c_void {}
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extern {
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fn free(p: *const c_void);
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fn malloc(size: size_t) -> *const c_void;
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}
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pub fn baz() {
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unsafe { free(malloc(4)); }
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}
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}
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enum c_void {} //~ ERROR: enum is never used
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extern {
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fn free(p: *const c_void); //~ ERROR: foreign function is never used
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}
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// Check provided method
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mod inner {
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pub trait Trait {
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fn f(&self) { f(); }
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}
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impl Trait for isize {}
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fn f() {}
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}
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pub fn foo() {
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let a: &inner::Trait = &1_isize;
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a.f();
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}
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