gcc/testsuite/rust/compile/issues/3585-2.rs

#![feature(no_core)]
#![no_core]
#![feature(lang_items)]

#[lang = "sized"]
trait Sized {}

fn main() {}

macro_rules! mac_impl {
    ($i:item) => {
        struct S;
        impl S { $i }
    }
}

mac_impl! {
    fn foo() {}
}

macro_rules! mac_trait {
    ($i:item) => {
        trait T { $i }
    }
}

mac_trait! {
    fn foo() {
    fn foo();
    // { dg-error "free function without a body" "" { target *-*-* } .-1 }
}
}

macro_rules! mac_extern {
    ($i:item) => {
        extern "C" { $i }
    }
}

mac_extern! {
    fn foo();
}