Static rustc_lint_defs::builtin::AMBIGUOUS_GLOB_REEXPORTS

pub static AMBIGUOUS_GLOB_REEXPORTS: &Lint

The ambiguous_glob_reexports lint detects cases where names re-exported via globs collide. Downstream users trying to use the same name re-exported from multiple globs will receive a warning pointing out redefinition of the same name.

Example

#![deny(ambiguous_glob_reexports)]
pub mod foo {
    pub type X = u8;
}

pub mod bar {
    pub type Y = u8;
    pub type X = u8;
}

pub use foo::*;
pub use bar::*;


pub fn main() {}

{{produces}}

Explanation

This was previously accepted but it could silently break a crate’s downstream users code. For example, if foo::* and bar::* were re-exported before bar::X was added to the re-exports, down stream users could use this_crate::X without problems. However, adding bar::X would cause compilation errors in downstream crates because X is defined multiple times in the same namespace of this_crate.