rust/tests/ui/lifetimes/unusual-rib-combinations.rs

31 lines
952 B
Rust

struct S<'a>(&'a u8);
fn foo() {}
// Paren generic args in AnonConst
fn a() -> [u8; foo()] {
//~^ ERROR mismatched types
panic!()
}
// Paren generic args in ConstGeneric
fn b<const C: u8()>() {}
//~^ ERROR parenthesized type parameters may only be used with a `Fn` trait
// Paren generic args in AnonymousReportError
fn c<T = u8()>() {}
//~^ ERROR parenthesized type parameters may only be used with a `Fn` trait
//~| ERROR defaults for type parameters are only allowed in
//~| WARN this was previously accepted
// Elided lifetime in path in ConstGeneric
fn d<const C: S>() {}
//~^ ERROR missing lifetime specifier
//~| ERROR `S<'_>` is forbidden as the type of a const generic parameter
trait Foo<'a> {}
struct Bar<const N: &'a (dyn for<'a> Foo<'a>)>;
//~^ ERROR the type of const parameters must not depend on other generic parameters
//~| ERROR `&dyn for<'a> Foo<'a>` is forbidden as the type of a const generic parameter
fn main() {}