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5 changes: 5 additions & 0 deletions compiler/rustc_resolve/src/late.rs
Original file line number Diff line number Diff line change
Expand Up @@ -4598,6 +4598,11 @@ impl<'a, 'ast, 'ra: 'ast, 'tcx> LateResolutionVisitor<'a, 'ast, 'ra, 'tcx> {
}
};

// Fix up partial res of segment from `resolve_path` call.
if let Some(id) = path[0].id {
self.r.partial_res_map.insert(id, PartialRes::new(Res::PrimTy(prim)));
}

PartialRes::with_unresolved_segments(Res::PrimTy(prim), path.len() - 1)
}
PathResult::Module(ModuleOrUniformRoot::Module(module)) => {
Expand Down
1 change: 1 addition & 0 deletions tests/ui/resolve/auxiliary/empty.rs
Original file line number Diff line number Diff line change
@@ -0,0 +1 @@
// Intentionally empty.
8 changes: 8 additions & 0 deletions tests/ui/resolve/prim-crate-partial-res.rs
Original file line number Diff line number Diff line change
@@ -0,0 +1,8 @@
//@ aux-build: empty.rs

extern crate empty as usize;

fn foo() -> usize<()> { 0 }
//~^ ERROR type arguments are not allowed on builtin type `usize`

fn main() {}
17 changes: 17 additions & 0 deletions tests/ui/resolve/prim-crate-partial-res.stderr
Original file line number Diff line number Diff line change
@@ -0,0 +1,17 @@
error[E0109]: type arguments are not allowed on builtin type `usize`
--> $DIR/prim-crate-partial-res.rs:5:19
|
LL | fn foo() -> usize<()> { 0 }
| ----- ^^ type argument not allowed
| |
| not allowed on builtin type `usize`
|
help: primitive type `usize` doesn't have generic parameters
|
LL - fn foo() -> usize<()> { 0 }
LL + fn foo() -> usize { 0 }
|

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0109`.
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