rust/src/test/ui/const-generics/const-param-elided-lifetime.rs

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2020-01-11 22:32:50 -06:00
// 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.
#![feature(const_generics)]
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//~^ WARN the feature `const_generics` is incomplete
struct A<const N: &u8>;
//~^ ERROR `&` without an explicit lifetime name cannot be used here
trait B {}
impl<const N: &u8> A<N> { //~ ERROR `&` without an explicit lifetime name cannot be used here
fn foo<const M: &u8>(&self) {}
//~^ ERROR `&` without an explicit lifetime name cannot be used here
}
impl<const N: &u8> B for A<N> {}
//~^ ERROR `&` without an explicit lifetime name cannot be used here
fn bar<const N: &u8>() {}
//~^ ERROR `&` without an explicit lifetime name cannot be used here
fn main() {}