3 files changed, 20 insertions, 20 deletions

diff --git a/crates/hir_def/src/nameres/collector.rs b/crates/hir_def/src/nameres/collector.rs
index 55228e480..a636ec77d 100644
--- a/crates/hir_def/src/nameres/collector.rs
+++ b/crates/hir_def/src/nameres/collector.rs
@@ -1289,20 +1289,20 @@ impl ModCollector<'_, '_> {
     }
 
     fn collect_derives(&mut self, attrs: &Attrs, ast_id: FileAstId<ast::Item>) {
-        for derive_subtree in attrs.by_key("derive").tt_values() {
-            // for #[derive(Copy, Clone)], `derive_subtree` is the `(Copy, Clone)` subtree
-            for tt in &derive_subtree.token_trees {
-                let ident = match &tt {
-                    tt::TokenTree::Leaf(tt::Leaf::Ident(ident)) => ident,
-                    tt::TokenTree::Leaf(tt::Leaf::Punct(_)) => continue, // , is ok
-                    _ => continue, // anything else would be an error (which we currently ignore)
-                };
-                let path = ModPath::from_tt_ident(ident);
-
-                let ast_id = AstIdWithPath::new(self.file_id, ast_id, path);
-                self.def_collector
-                    .unexpanded_attribute_macros
-                    .push(DeriveDirective { module_id: self.module_id, ast_id });
+        for derive in attrs.by_key("derive").attrs() {
+            match derive.parse_derive() {
+                Some(derive_macros) => {
+                    for path in derive_macros {
+                        let ast_id = AstIdWithPath::new(self.file_id, ast_id, path);
+                        self.def_collector
+                            .unexpanded_attribute_macros
+                            .push(DeriveDirective { module_id: self.module_id, ast_id });
+                    }
+                }
+                None => {
+                    // FIXME: diagnose
+                    log::debug!("malformed derive: {:?}", derive);
+                }
             }
         }
     }
diff --git a/crates/hir_def/src/nameres/tests.rs b/crates/hir_def/src/nameres/tests.rs
index a4d1fb8f3..c459fa66d 100644
--- a/crates/hir_def/src/nameres/tests.rs
+++ b/crates/hir_def/src/nameres/tests.rs
@@ -13,8 +13,8 @@ use test_utils::mark;
 
 use crate::{db::DefDatabase, nameres::*, test_db::TestDB};
 
-fn compute_crate_def_map(fixture: &str) -> Arc<CrateDefMap> {
-    let db = TestDB::with_files(fixture);
+fn compute_crate_def_map(ra_fixture: &str) -> Arc<CrateDefMap> {
+    let db = TestDB::with_files(ra_fixture);
     let krate = db.crate_graph().iter().next().unwrap();
     db.crate_def_map(krate)
 }
diff --git a/crates/hir_def/src/nameres/tests/macros.rs b/crates/hir_def/src/nameres/tests/macros.rs
index 6fe2ee78a..f9bf5bc72 100644
--- a/crates/hir_def/src/nameres/tests/macros.rs
+++ b/crates/hir_def/src/nameres/tests/macros.rs
@@ -632,11 +632,11 @@ pub struct bar;
 #[test]
 fn expand_derive() {
     let map = compute_crate_def_map(
-        "
+        r#"
         //- /main.rs crate:main deps:core
-        use core::*;
+        use core::Copy;
 
-        #[derive(Copy, Clone)]
+        #[derive(Copy, core::Clone)]
         struct Foo;
 
         //- /core.rs crate:core
@@ -645,7 +645,7 @@ fn expand_derive() {
 
         #[rustc_builtin_macro]
         pub macro Clone {}
-        ",
+        "#,
     );
     assert_eq!(map.modules[map.root].scope.impls().len(), 2);
 }