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Fix for cloned class singleton class has too many ancestors #9239

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Merged
headius merged 1 commit into from
Feb 18, 2026
+7 −3
Merged

Fix for cloned class singleton class has too many ancestors #9239

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Fix for cloned class singleton class has too many ancestors
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@evaniainbrooks
evaniainbrooks committed Feb 15, 2026
commit f81eb73a1b80c2936be2a3bbfa68fe539c4930cc
10 changes: 7 additions & 3 deletions core/src/main/java/org/jruby/RubyBasicObject.java
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Original file line number Diff line number Diff line change
Expand Up @@ -1029,16 +1029,20 @@ protected RubyClass getSingletonClassCloneAndAttach(ThreadContext context, RubyB
MetaClass clone = new MetaClass(context.runtime, klass.getSuperClass(), attach);
clone.flags = klass.flags;

clone.setMetaClass(this instanceof RubyClass ? clone : klass.getSingletonClassCloneAndAttach(context, null));
if (this instanceof RubyClass) {
clone.setMetaClass(clone);
} else {
MetaClass metaClone = (MetaClass) klass.getSingletonClassCloneAndAttach(context, null);
clone.setMetaClass(metaClone);
metaClone.setAttached(clone);
}

if (klass.hasVariables()) clone.syncVariables(klass);

clone.syncConstants(klass);

klass.cloneMethods(context, clone);

((MetaClass) clone.getMetaClass()).setAttached(clone);

return clone;
}

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