From cded6d995ed1c19f92c82b7318920d80f6ffd5ae Mon Sep 17 00:00:00 2001
From: Jean Boussier <byroot@ruby-lang.org>
Date: Wed, 13 Mar 2024 12:50:11 +0100
Subject: [PATCH] Ensure test suite is compatible with --frozen-string-literal

As preparation for https://bugs.ruby-lang.org/issues/20205
making sure the test suite is compatible with frozen string
literals is making things easier.
---
 test/stringio/test_ractor.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/test/stringio/test_ractor.rb b/test/stringio/test_ractor.rb
index 1c334e2c..4a2033bc 100644
--- a/test/stringio/test_ractor.rb
+++ b/test/stringio/test_ractor.rb
@@ -11,7 +11,7 @@ def test_ractor
       require "stringio"
       $VERBOSE = nil
       r = Ractor.new do
-        io = StringIO.new("")
+        io = StringIO.new(+"")
         io.puts "abc"
         io.truncate(0)
         io.puts "def"