From bcd0e0e439cc3ed497fafc5dda01e6f0951c0a50 Mon Sep 17 00:00:00 2001
From: "Yukihiro \"Matz\" Matsumoto" <matz@ruby.or.jp>
Date: Wed, 12 Feb 2025 15:10:24 +0900
Subject: [PATCH] class.c (mrb_remove_method): call hook method

Depending the context, hook method should be either method_removed or
singleton_method_removed.
---
 src/class.c | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/src/class.c b/src/class.c
index 4a32ab986..80c44d324 100644
--- a/src/class.c
+++ b/src/class.c
@@ -2403,7 +2403,22 @@ mrb_remove_method(mrb_state *mrb, struct RClass *c, mrb_sym mid)
   mt_tbl *h = c->mt;
 
   if (h && mt_del(mrb, h, mid)) {
+    mrb_sym removed;
+    mrb_value recv;
+
     mc_clear_by_id(mrb, mid);
+    if (c->tt == MRB_TT_SCLASS) {
+      removed = MRB_SYM(singleton_method_removed);
+      recv = mrb_iv_get(mrb, mrb_obj_value(c), MRB_SYM(__attached__));
+    }
+    else {
+      removed = MRB_SYM(method_removed);
+      recv = mrb_obj_value(c);
+    }
+    if (!mrb_func_basic_p(mrb, recv, removed, mrb_do_nothing)) {
+      mrb_value sym = mrb_symbol_value(mid);
+      mrb_funcall_argv(mrb, recv, removed, 1, &sym);
+    }
     return;
   }
   mrb_name_error(mrb, mid, "method '%n' not defined in %C", mid, c);