https://git.ruby-lang.org/ruby.git/commit/?id=4dba8b4027

From 4dba8b4027e1f3366c2e04dd7554eb65edbea983 Mon Sep 17 00:00:00 2001
From: Alan Wu <XrXr@u...>
Date: Tue, 16 Jun 2020 17:45:45 -0400
Subject: Assert iclass property and remove dead code

Iclass objects are never made from other iclass objects.

diff --git a/class.c b/class.c
index 78667ad..4dbf5a2 100644
--- a/class.c
+++ b/class.c
@@ -915,6 +915,7 @@ rb_include_class_new(VALUE module, VALUE super) https://github.com/ruby/ruby/blob/trunk/class.c#L915
     if (BUILTIN_TYPE(module) == T_ICLASS) {
 	module = RBASIC(module)->klass;
     }
+    RUBY_ASSERT(!RB_TYPE_P(module, T_ICLASS));
     if (!RCLASS_IV_TBL(module)) {
 	RCLASS_IV_TBL(module) = st_init_numtable();
     }
@@ -925,12 +926,7 @@ rb_include_class_new(VALUE module, VALUE super) https://github.com/ruby/ruby/blob/trunk/class.c#L926
     RCLASS_CONST_TBL(klass) = RCLASS_CONST_TBL(module);
 
     RCLASS_SET_SUPER(klass, super);
-    if (RB_TYPE_P(module, T_ICLASS)) {
-	RBASIC_SET_CLASS(klass, RBASIC(module)->klass);
-    }
-    else {
-	RBASIC_SET_CLASS(klass, module);
-    }
+    RBASIC_SET_CLASS(klass, module);
 
     return (VALUE)klass;
 }
-- 
cgit v0.10.2


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