Fix empty index crashing when searching attributes

crates/milli/src/search/new/mod.rs

@@ -178,6 +178,12 @@ impl<'ctx> SearchContext<'ctx> {
                 None if user_defined_searchable.is_none() => continue,
                 // The field is not searchable => User error
                 None => {
+                    if let Some(defined_searchable) = &user_defined_searchable {
+                        if defined_searchable.iter().any(|s| s == field_name) {
+                            continue;
+                        }
+                    }
+
                     let (valid_fields, hidden_fields) = self.index.remove_hidden_fields(
                         self.txn,
                         searchable_fields_weights.iter().map(|(name, _, _)| name),

crates/milli/src/search/new/tests/attribute_update.rs

@@ -0,0 +1,26 @@
+use crate::index::tests::TempIndex;
+use crate::Search;
+
+fn create_empty_index() -> TempIndex {
+    let index = TempIndex::new();
+
+    index.update_settings(|s| {
+        s.set_primary_key("id".to_string());
+        s.set_searchable_fields(vec!["name".to_string(), "title".to_string()]);
+    }).unwrap();
+
+    index
+}
+
+#[test]
+fn test_attribute_search_on_empty_index() {
+    let index = create_empty_index();
+    let txn = index.read_txn().unwrap();
+
+    let mut search = Search::new(&txn, &index);
+    let attrs= ["title".to_string()];
+    search.searchable_attributes(&attrs);
+    search.query("doc");
+
+    search.execute().unwrap();
+}

crates/milli/src/search/new/tests/mod.rs

@@ -16,6 +16,7 @@ pub mod stop_words;
 pub mod typo;
 pub mod typo_proximity;
 pub mod words_tms;
+mod attribute_update;
 
 fn collect_field_values(
     index: &crate::Index,