From 98aceb0ca8b24226543779ac06416772ca88ef74 Mon Sep 17 00:00:00 2001
From: Charles Oliver Nutter <headius@headius.com>
Date: Tue, 11 Feb 2025 15:52:35 -0600
Subject: [PATCH] Use private lookup for these handles

publicLookup seems to have trouble when there are multiple versions
of a signature class in the classloader hierarchy.

Fixes ruby/stringio#112
---
 ext/java/org/jruby/ext/stringio/StringIO.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ext/java/org/jruby/ext/stringio/StringIO.java b/ext/java/org/jruby/ext/stringio/StringIO.java
index cc54c32..5f4a1d7 100644
--- a/ext/java/org/jruby/ext/stringio/StringIO.java
+++ b/ext/java/org/jruby/ext/stringio/StringIO.java
@@ -1529,7 +1529,7 @@ public IRubyObject write(ThreadContext context, IRubyObject[] args) {
 
     static {
         MethodHandle cat, modify, substr;
-        MethodHandles.Lookup lookup = MethodHandles.publicLookup();
+        MethodHandles.Lookup lookup = MethodHandles.lookup();
         try {
             cat = lookup.findVirtual(RubyString.class, "catWithCodeRange", MethodType.methodType(RubyString.class, RubyString.class));
             modify = lookup.findVirtual(RubyString.class, "modifyAndClearCodeRange", MethodType.methodType(void.class));