https://git.ruby-lang.org/ruby.git/commit/?id=70fd022a2a

From 70fd022a2ae03d237ee9045db9834f253f3d843f Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@r...>
Date: Thu, 19 Sep 2019 09:47:11 +0900
Subject: DEBUG


diff --git a/test/ruby/test_io.rb b/test/ruby/test_io.rb
index ed60452..20875f7 100644
--- a/test/ruby/test_io.rb
+++ b/test/ruby/test_io.rb
@@ -2003,6 +2003,8 @@ class TestIO < Test::Unit::TestCase https://github.com/ruby/ruby/blob/trunk/test/ruby/test_io.rb#L2003
       end
     end
     false
+  rescue LoadError
+    raise File.read("ext/-test-/file/mkmf.log")
   end
 
   def test_seek
-- 
cgit v0.10.2


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