https://git.ruby-lang.org/ruby.git/commit/?id=cb2323a983

From cb2323a98366bb7afb7b2fee2547804bbbc9d345 Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@r...>
Date: Tue, 8 Nov 2022 09:31:58 +0900
Subject: Thread#native_thread_id is very platform specific

---
 spec/ruby/core/thread/native_thread_id_spec.rb | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/spec/ruby/core/thread/native_thread_id_spec.rb b/spec/ruby/core/thread/native_thread_id_spec.rb
index 5a6c0c8632..d6cc332bf6 100644
--- a/spec/ruby/core/thread/native_thread_id_spec.rb
+++ b/spec/ruby/core/thread/native_thread_id_spec.rb
@@ -1,6 +1,8 @@ https://github.com/ruby/ruby/blob/trunk/spec/ruby/core/thread/native_thread_id_spec.rb#L1
 require_relative '../../spec_helper'
 
-ruby_version_is "3.1" do
+if ruby_version_is "3.1" and Thread.method_defined?(:native_thread_id)
+  # This method is very platform specific
+
   describe "Thread#native_thread_id" do
     it "returns an integer when the thread is alive" do
       Thread.current.native_thread_id.should be_kind_of(Integer)
-- 
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