fix ICE in unnecessary_mut_passed

rust-lang · Jan 23, 2025 · ac87b0c · ac87b0c
1 parent 396de57
commit ac87b0c
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/clippy_lints/src/mut_reference.rs b/clippy_lints/src/mut_reference.rs
@@ -54,8 +54,9 @@ impl<'tcx> LateLintPass<'tcx> for UnnecessaryMutPassed {
                     );
                 }
             },
-            ExprKind::MethodCall(path, receiver, arguments, _) => {
-                let def_id = cx.typeck_results().type_dependent_def_id(e.hir_id).unwrap();
+            ExprKind::MethodCall(path, receiver, arguments, _)
+                if let Some(def_id) = cx.typeck_results().type_dependent_def_id(e.hir_id) =>
+            {
                 let args = cx.typeck_results().node_args(e.hir_id);
                 let method_type = cx.tcx.type_of(def_id).instantiate(cx.tcx, args);
                 check_arguments(