gcc/testsuite/rust/compile/generics12.rs

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

#![feature(lang_items)]
#[lang = "sized"]
pub trait Sized {}

fn main() {
    bar();
    // { dg-error "type annotations needed" "" { target *-*-* } .-1 }
}

fn bar<T>() {}