1 error[E0277]: the size for values of type `Self` cannot be known at compilation time
2 --> $DIR/issue-27078.rs:5:12
4 LL | fn foo(self) -> &'static i32 {
5 | ^^^^ doesn't have a size known at compile-time
7 = help: the trait `std::marker::Sized` is not implemented for `Self`
8 = note: all local variables must have a statically known size
9 = help: unsized locals are gated as an unstable feature
10 help: consider further restricting `Self`
12 LL | fn foo(self) -> &'static i32 where Self: std::marker::Sized {
13 | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
15 error: aborting due to previous error
17 For more information about this error, try `rustc --explain E0277`.