From 92be161b1f2861cc122eb79e3a808a97787ba077 Mon Sep 17 00:00:00 2001
From: "Yukihiro \"Matz\" Matsumoto" <matz@ruby.or.jp>
Date: Thu, 23 Jun 2022 07:54:04 +0900
Subject: [PATCH] vm.c (check_target_class): return Object class if target is
 NULL.

Since #5272 target_class kept in a Proc may be NULL. It crashes
`iij/mruby-require` gem for example; close #5725
---
 src/vm.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/src/vm.c b/src/vm.c
index 145bf524a..831205f55 100644
--- a/src/vm.c
+++ b/src/vm.c
@@ -1153,8 +1153,7 @@ check_target_class(mrb_state *mrb)
 {
   struct RClass *target = mrb_vm_ci_target_class(mrb->c->ci);
   if (!target) {
-    mrb_value exc = mrb_exc_new_lit(mrb, E_TYPE_ERROR, "no target class or module");
-    mrb_exc_set(mrb, exc);
+    return mrb->object_class;
   }
   return target;
 }