// All lifetime parameters in struct constructors are currently considered early bound, // i.e., `S::` is interpreted kinda like an associated item `S::::ctor`. // This behavior is a bit weird, because if equivalent constructor were written manually // it would get late bound lifetime parameters. // Variant constructors behave in the same way, lifetime parameters are considered // belonging to the enum and being early bound. // https://github.com/rust-lang/rust/issues/30904 struct S<'a, 'b>(&'a u8, &'b u8); enum E<'a, 'b> { V(&'a u8), U(&'b u8), } fn main() { S(&0, &0); // OK S::<'static>(&0, &0); //~^ ERROR struct takes 2 lifetime arguments S::<'static, 'static, 'static>(&0, &0); //~^ ERROR struct takes 2 lifetime arguments E::V(&0); // OK E::V::<'static>(&0); //~^ ERROR enum takes 2 lifetime arguments E::V::<'static, 'static, 'static>(&0); //~^ ERROR enum takes 2 lifetime arguments }