Static PUB_USE_OF_PRIVATE_EXTERN_CRATE

pub static PUB_USE_OF_PRIVATE_EXTERN_CRATE: &'static Lint

The pub_use_of_private_extern_crate lint detects a specific situation of re-exporting a private extern crate.

Example

extern crate core;
pub use core as reexported_core;

{{produces}}

Explanation

A public use declaration should not be used to publicly re-export a private extern crate. pub extern crate should be used instead.

This was historically allowed, but is not the intended behavior according to the visibility rules. This is a future-incompatible lint to transition this to a hard error in the future. See issue #127909 for more details.