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#![allow(unused_variables)]
#![deny(dead_code)]
#![feature(rustc_attrs, start)]
struct Foo;
trait Bar {
fn bar1(&self);
fn bar2(&self) {
self.bar1();
}
}
impl Bar for Foo {
fn bar1(&self) {
live_fn();
}
}
fn live_fn() {}
fn dead_fn() {} //~ ERROR: function `dead_fn` is never used
#[rustc_main]
fn dead_fn2() {} //~ ERROR: function `dead_fn2` is never used
fn used_fn() {}
#[start]
fn start(_: isize, _: *const *const u8) -> isize {
used_fn();
let foo = Foo;
foo.bar2();
0
}
// this is not main
fn main() { //~ ERROR: function `main` is never used
dead_fn();
dead_fn2();
}
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