src/test/ui/variance/variance-invariant-self-trait-match.rs


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#![allow(dead_code)]

// revisions: base nll
// ignore-compare-mode-nll
//[nll] compile-flags: -Z borrowck=mir

trait Get {
    fn get(&self) -> Self;
}

fn get_min_from_max<'min, 'max, G>()
    where 'max : 'min, &'max G : Get, G : 'max
{
    impls_get::<&'min G>();
    //[base]~^ ERROR mismatched types
    //[nll]~^^ ERROR lifetime may not live long enough
}

fn get_max_from_min<'min, 'max, G>()
    where 'max : 'min, &'min G : Get, G : 'min
{
    impls_get::<&'max G>();
    //[base]~^ ERROR mismatched types
    //[nll]~^^ ERROR lifetime may not live long enough
}

fn impls_get<G>() where G : Get { }

fn main() { }