From 0d8545e01b2f58e0195d621d8ed381cb9d4cc362 Mon Sep 17 00:00:00 2001
From: "Yukihiro \"Matz\" Matsumoto" <matz@ruby.or.jp>
Date: Wed, 31 May 2023 08:35:54 +0900
Subject: [PATCH] error.c (frozen_error): change specifier from `%t` to `%T`

- `%t` prints type (class) of the argument
- `%T` prints real class of the argument, skipping TT_ICLASS, etc.
---
 src/error.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/error.c b/src/error.c
index f9e7b57a9..81b65211f 100644
--- a/src/error.c
+++ b/src/error.c
@@ -521,7 +521,7 @@ mrb_no_method_error(mrb_state *mrb, mrb_sym id, mrb_value args, char const* fmt,
 static mrb_noreturn void
 frozen_error(mrb_state *mrb, mrb_value v)
 {
-  mrb_raisef(mrb, E_FROZEN_ERROR, "can't modify frozen %t", v);
+  mrb_raisef(mrb, E_FROZEN_ERROR, "can't modify frozen %T", v);
 }
 
 MRB_API mrb_noreturn void