1error[E0658]: the `linkage` attribute is experimental and not portable across platforms 2 --> $DIR/feature-gate-linkage.rs:2:5 3 | 4LL | #[linkage = "extern_weak"] static foo: *mut isize; 5 | ^^^^^^^^^^^^^^^^^^^^^^^^^^ 6 | 7 = note: see issue #29603 <https://github.com/rust-lang/rust/issues/29603> for more information 8 = help: add `#![feature(linkage)]` to the crate attributes to enable 9 10error: aborting due to previous error 11 12For more information about this error, try `rustc --explain E0658`. 13