rust/tests/ui/polymorphization/inline-incorrect-early-bound.rs

28 lines
796 B
Rust

// This test demonstrates an ICE that may occur when we try to resolve the instance
// of a impl that has different generics than the trait it's implementing. This ensures
// we first check that the args are compatible before resolving the body, just like
// we do in projection before substituting a GAT.
//
// When polymorphization is enabled, we check the optimized MIR for unused parameters.
// This will invoke the inliner, leading to this ICE.
//@ compile-flags: -Zpolymorphize=on -Zinline-mir=yes
trait Trait {
fn foo<'a, K: 'a>(self, _: K);
}
impl Trait for () {
#[inline]
fn foo<K>(self, _: K) {
//~^ ERROR lifetime parameters or bounds on method `foo` do not match the trait declaration
todo!();
}
}
pub fn qux<T>() {
().foo(());
}
fn main() {}