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// build-fail
// compile-flags:-Zpolymorphize=on
#![feature(rustc_attrs)]
// This test checks that the polymorphization analysis doesn't break when the
// function/closure doesn't just have generic parameters.
// Function has an unused generic parameter.
#[rustc_polymorphize_error]
pub fn unused<'a, T>(_: &'a u32) {
//~^ ERROR item has unused generic parameters
}
#[rustc_polymorphize_error]
pub fn used<'a, T: Default>(_: &'a u32) -> u32 {
let _: T = Default::default();
let add_one = |x: u32| x + 1;
//~^ ERROR item has unused generic parameters
add_one(3)
}
fn main() {
unused::<u32>(&3);
used::<u32>(&3);
}
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