From 4f9f2243e9fc0fd0e0d4334b54b2cad7282f4ac1 Mon Sep 17 00:00:00 2001
From: John Hawthorn <john@hawthorn.email>
Date: Thu, 22 May 2025 14:18:03 -0700
Subject: [PATCH] Stricter assert for RCLASS_ALLOCATOR

I'd like to make this only valid to T_CLASS also, but currently it is
called in some places for T_ICLASS and expected to return 0.
---
 internal/class.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/internal/class.h b/internal/class.h
index 4a3e0afafb..b6da66a61d 100644
--- a/internal/class.h
+++ b/internal/class.h
@@ -658,6 +658,7 @@ RCLASS_SET_REFINED_CLASS(VALUE klass, VALUE refined)
 static inline rb_alloc_func_t
 RCLASS_ALLOCATOR(VALUE klass)
 {
+    RUBY_ASSERT(RB_TYPE_P(klass, T_CLASS) || RB_TYPE_P(klass, T_ICLASS));
     if (RCLASS_SINGLETON_P(klass) || RB_TYPE_P(klass, T_ICLASS)) {
         return 0;
     }