Closed
Description
I'm seeing a strange issue where a type is not being exported from a module if that module imports a type with the same name. Here is an example that demonstrates this issue:
mod abc {
pub struct Beeblebrox;
pub struct Zaphod;
}
mod foo {
pub mod bar {
use crate::abc::*;
#[derive(Debug)]
pub enum Zaphod {
Whale,
President,
}
}
pub use bar::*;
}
mod baz {
pub fn do_something() {
println!("{:?}", crate::foo::Zaphod::Whale);
}
}
fn main() {
baz::do_something();
}In module bar, we're importing abc::Zaphod, and then defining a type of the same name. When exporting everything from bar via pub use bar::*, the Zaphod type is not exported. Is this expected behavior? It seems wrong to me.
I would have expected the type that's actually declared in bar to take precedence and be exported. Either that, or the compiler should emit a useful error describing the collision. At present, the type is silently omitted.
Meta
rustc 1.67.0-nightly (215e3cd21 2022-11-03)
binary: rustc
commit-hash: 215e3cd218b83b8a3152d84d92f17109253c25e1
commit-date: 2022-11-03
host: x86_64-unknown-linux-gnu
release: 1.67.0-nightly
LLVM version: 15.0.4
Backtrace
Compiling playground v0.0.1 (/playground)
error[[E0433]](https://doc.rust-lang.org/nightly/error-index.html#E0433): failed to resolve: could not find `Zaphod` in `foo`
--> src/main.rs:20:38
|
20 | println!("{:?}", crate::foo::Zaphod::Whale);
| ^^^^^^ could not find `Zaphod` in `foo`
warning: unused import: `crate::abc::*`
--> src/main.rs:8:13
|
8 | [use crate::abc::*;](https://play.rust-lang.org/?version=nightly&mode=debug&edition=2021&gist=1980019cec4c271a2bfddb14e2f016f0#)
| ^^^^^^^^^^^^^
|
= note: `#[warn(unused_imports)]` on by default
For more information about this error, try `rustc --explain E0433`.
warning: `playground` (bin "playground") generated 1 warning
error: could not compile `playground` due to previous error; 1 warning emitted