From 4646ab89179aa3dac917a16aaa16533548ad33d9 Mon Sep 17 00:00:00 2001
From: Kanstantsin Shautsou <kanstantsin.sha@gmail.com>
Date: Mon, 7 Apr 2025 14:02:46 +0300
Subject: [PATCH] Use correct warn method

---
 ractor.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ractor.rb b/ractor.rb
index caeca88644..b22cb68939 100644
--- a/ractor.rb
+++ b/ractor.rb
@@ -274,7 +274,7 @@ class Ractor
     b = block # TODO: builtin bug
     raise ArgumentError, "must be called with a block" unless block
     if __builtin_cexpr!("RBOOL(ruby_single_main_ractor)")
-      warn("Ractor is experimental, and the behavior may change in future versions of Ruby! " \
+      Kernel.warn("Ractor is experimental, and the behavior may change in future versions of Ruby! " \
            "Also there are many implementation issues.", uplevel: 0, category: :experimental)
     end
     loc = caller_locations(1, 1).first