Cannot elide lifetime parameters in function return types

[mbrubeck]

According to RFC 39: Lifetime Elision this should be legal:

struct S<'a>;
fn f() -> S { S }

but it fails to compile with:

lifetime-elision.rs:3:11: 3:12 error: wrong number of lifetime parameters: expected 1 but found 0 [E0107]
lifetime-elision.rs:3 fn f() -> S {
                                ^

This is part of #15552, so I think it should be nominated for 1.0 blocking.

[mbrubeck]

Oops, my bad. I misunderstood the RFC. My test case above does require a lifetime annotation because f has no arguments. The original code it was reduced from required one because it had multiple reference arguments. Closing this issue as invalid.