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#![allow(unused_variables)]
#![allow(non_camel_case_types)]
#![allow(clashing_extern_declarations)]
#![deny(dead_code)]
#![crate_type="lib"]
pub use extern_foo as x;
extern "C" {
pub fn extern_foo();
}
struct Foo; //~ ERROR: struct `Foo` is never constructed
impl Foo {
fn foo(&self) { //~ ERROR: method `foo` is never used
bar()
}
}
fn bar() { //~ ERROR: function `bar` is never used
fn baz() {}
Foo.foo();
baz();
}
// no warning
struct Foo2;
impl Foo2 { fn foo2(&self) { bar2() } }
fn bar2() {
fn baz2() {}
Foo2.foo2();
baz2();
}
pub fn pub_fn() {
let foo2_struct = Foo2;
foo2_struct.foo2();
blah::baz();
}
mod blah {
// not warned because it's used in the parameter of `free` and return of
// `malloc` below, which are also used.
enum c_void {}
extern "C" {
fn free(p: *const c_void);
fn malloc(size: usize) -> *const c_void;
}
pub fn baz() {
unsafe { free(malloc(4)); }
}
}
enum c_void {} //~ ERROR: enum `c_void` is never used
extern "C" {
fn free(p: *const c_void); //~ ERROR: function `free` is never used
}
// Check provided method
mod inner {
pub trait Trait {
fn f(&self) { f(); }
}
impl Trait for isize {}
fn f() {}
}
fn anon_const() -> [(); {
fn blah() {} //~ ERROR: function `blah` is never used
1
}] {
[(); {
fn blah() {} //~ ERROR: function `blah` is never used
1
}]
}
pub fn foo() {
let a: &dyn inner::Trait = &1_isize;
a.f();
anon_const();
}
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