src/test/ui/coherence/coherence-subtyping.rs


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// Test that two distinct impls which match subtypes of one another
// yield coherence errors (or not) depending on the variance.
//
// Note: This scenario is currently accepted, but as part of the
// universe transition (#56105) may eventually become an error.

// revisions: old re
// compile-pass

#![cfg_attr(re, feature(re_rebalance_coherence))]

trait TheTrait {
    fn foo(&self) { }
}

impl TheTrait for for<'a,'b> fn(&'a u8, &'b u8) -> &'a u8 {
}

impl TheTrait for for<'a> fn(&'a u8, &'a u8) -> &'a u8 {
}

fn main() { }