From aa5759a22b675d05d1f8cbfe4558eb37915c27fb Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@ruby-lang.org>
Date: Wed, 13 Oct 2021 11:27:09 +0900
Subject: [PATCH] `rb_id_serial_to_id` is used in `key2id` since 4c2d014e9216

---
 symbol.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/symbol.c b/symbol.c
index 528ab2d640..94a751d5e3 100644
--- a/symbol.c
+++ b/symbol.c
@@ -482,9 +482,6 @@ get_id_entry(ID id, const enum id_entry_type t)
 }
 
 static inline ID
-#ifdef __GNUC__
-__attribute__((unused))
-#endif
 rb_id_serial_to_id(rb_id_serial_t num)
 {
     if (is_notop_id((ID)num)) {