From 43fdce50197beb6a312fe93cc2f64298ec78de64 Mon Sep 17 00:00:00 2001
From: dearblue <dearblue@users.osdn.me>
Date: Sat, 30 Jul 2022 22:34:50 +0900
Subject: [PATCH] Protected `proc` objects given by `OP_DEF` on registers

If a GC occurs in `mrb_calloc()` called by `mt_rehash()` inside `mrb_define_method_raw(), the `proc` may be destroyed.
---
 mrbgems/mruby-compiler/core/codegen.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/mrbgems/mruby-compiler/core/codegen.c b/mrbgems/mruby-compiler/core/codegen.c
index f48867162..c1292e869 100644
--- a/mrbgems/mruby-compiler/core/codegen.c
+++ b/mrbgems/mruby-compiler/core/codegen.c
@@ -3763,6 +3763,7 @@ codegen(codegen_scope *s, node *tree, int val)
       genop_1(s, OP_SCLASS, cursp());
       push();
       genop_2(s, OP_METHOD, cursp(), idx);
+      push(); pop();
       pop();
       genop_2(s, OP_DEF, cursp(), sym);
       if (val) push();