https://git.ruby-lang.org/ruby.git/commit/?id=03f9e8746e

From 03f9e8746e42a4835583678af217cdf4c417bd05 Mon Sep 17 00:00:00 2001
From: Charles Oliver Nutter <headius@h...>
Date: Sun, 23 Feb 2020 12:49:26 -0800
Subject: Don't tweak RubyVM compile options if it's not defined


diff --git a/test/ruby/test_settracefunc.rb b/test/ruby/test_settracefunc.rb
index 73cf625..300033a 100644
--- a/test/ruby/test_settracefunc.rb
+++ b/test/ruby/test_settracefunc.rb
@@ -3,17 +3,21 @@ require 'test/unit' https://github.com/ruby/ruby/blob/trunk/test/ruby/test_settracefunc.rb#L3
 
 class TestSetTraceFunc < Test::Unit::TestCase
   def setup
-    @original_compile_option = RubyVM::InstructionSequence.compile_option
-    RubyVM::InstructionSequence.compile_option = {
-      :trace_instruction => true,
-      :specialized_instruction => false
-    }
+    if defined?(RubyVM)
+      @original_compile_option = RubyVM::InstructionSequence.compile_option
+      RubyVM::InstructionSequence.compile_option = {
+        :trace_instruction => true,
+        :specialized_instruction => false
+      }
+    end
     @target_thread = Thread.current
   end
 
   def teardown
     set_trace_func(nil)
-    RubyVM::InstructionSequence.compile_option = @original_compile_option
+    if defined?(RubyVM)
+      RubyVM::InstructionSequence.compile_option = @original_compile_option
+    end
     @target_thread = nil
   end
 
-- 
cgit v0.10.2


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