rust/tests/ui/const-generics/const-param-elided-lifetime.rs

31 lines
1.2 KiB
Rust

// Elided lifetimes within the type of a const generic parameters is disallowed. This matches the
// behaviour of trait bounds where `fn foo<T: Ord<&u8>>() {}` is illegal. Though we could change
// elided lifetimes within the type of a const generic parameters to be 'static, like elided
// lifetimes within const/static items.
//@ revisions: full min
#![cfg_attr(full, feature(adt_const_params, unsized_const_params))]
#![cfg_attr(full, allow(incomplete_features))]
struct A<const N: &u8>;
//~^ ERROR `&` without an explicit lifetime name cannot be used here
//[min]~^^ ERROR `&u8` is forbidden
trait B {}
impl<const N: &u8> A<N> {
//~^ ERROR `&` without an explicit lifetime name cannot be used here
//[min]~^^ ERROR `&u8` is forbidden
fn foo<const M: &u8>(&self) {}
//~^ ERROR `&` without an explicit lifetime name cannot be used here
//[min]~^^ ERROR `&u8` is forbidden
}
impl<const N: &u8> B for A<N> {}
//~^ ERROR `&` without an explicit lifetime name cannot be used here
//[min]~^^ ERROR `&u8` is forbidden
fn bar<const N: &u8>() {}
//~^ ERROR `&` without an explicit lifetime name cannot be used here
//[min]~^^ ERROR `&u8` is forbidden
fn main() {}