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resolve: Fix resolution of empty paths passed from rustdoc #95681

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merged 1 commit into from
Apr 6, 2022
Merged

resolve: Fix resolution of empty paths passed from rustdoc #95681

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4 changes: 3 additions & 1 deletion compiler/rustc_resolve/src/lib.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -3298,7 +3298,9 @@ impl<'a> Resolver<'a> {
PathResult::NonModule(path_res) if path_res.unresolved_segments() == 0 => {
Some(path_res.base_res())
}
PathResult::NonModule(..) | PathResult::Failed { .. } => None,
PathResult::Module(ModuleOrUniformRoot::ExternPrelude)
| PathResult::NonModule(..)
| PathResult::Failed { .. } => None,
PathResult::Module(..) | PathResult::Indeterminate => unreachable!(),
}
}
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8 changes: 8 additions & 0 deletions src/test/rustdoc-ui/intra-doc/global-path.rs
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@@ -0,0 +1,8 @@
// Doc link path with empty prefix that resolves to "extern prelude" instead of a module.

// check-pass
// edition:2018

/// [::Unresolved]
//~^ WARN unresolved link to `::Unresolved`
pub struct Item;
10 changes: 10 additions & 0 deletions src/test/rustdoc-ui/intra-doc/global-path.stderr
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@@ -0,0 +1,10 @@
warning: unresolved link to `::Unresolved`
--> $DIR/global-path.rs:6:6
|
LL | /// [::Unresolved]
| ^^^^^^^^^^^^ no item named `` in scope
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Unrelated to the changes here, this error message seems wrong. Should we open an issue to change the diagnostic to check for empty paths?

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Maybe.
I don't plan to work on this personally.

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I'm looking into it.

|
= note: `#[warn(rustdoc::broken_intra_doc_links)]` on by default

warning: 1 warning emitted