Merge #5861

5861: Support extern types r=matklad a=jonas-schievink

This is a currently unstable feature tracked at https://github.com/rust-lang/rust/issues/43467

Co-authored-by: Jonas Schievink <[email protected]>

2 files changed, 6 insertions, 0 deletions

diff --git a/crates/hir_def/src/item_tree/lower.rs b/crates/hir_def/src/item_tree/lower.rs
index 391ab5d39..6a503d785 100644
--- a/crates/hir_def/src/item_tree/lower.rs
+++ b/crates/hir_def/src/item_tree/lower.rs
@@ -557,6 +557,10 @@ impl Ctx {
                             let statik = self.lower_static(&ast)?;
                             statik.into()
                         }
+                        ast::ExternItem::TypeAlias(ty) => {
+                            let id = self.lower_type_alias(&ty)?;
+                            id.into()
+                        }
                         ast::ExternItem::MacroCall(_) => return None,
                     };
                     self.add_attrs(id.into(), attrs);
diff --git a/crates/hir_def/src/nameres/tests.rs b/crates/hir_def/src/nameres/tests.rs
index 8aaf7a158..5ca30dac9 100644
--- a/crates/hir_def/src/nameres/tests.rs
+++ b/crates/hir_def/src/nameres/tests.rs
@@ -46,6 +46,7 @@ union U { to_be: bool, not_to_be: u8 }
 enum E { V }
 
 extern {
+    type Ext;
     static EXT: u8;
     fn ext();
 }
@@ -65,6 +66,7 @@ extern {
             Baz: t v
             E: t
             EXT: v
+            Ext: t
             U: t
             ext: v
         "#]],