1 files changed, 4 insertions, 1 deletions
diff --git a/test/ruby/test_system.rb b/test/ruby/test_system.rb
index 4cd93738f..d70d6f8ca 100644
--- a/test/ruby/test_system.rb
+++ b/test/ruby/test_system.rb
@@ -3,7 +3,10 @@ require 'envutil'
 
 class TestSystem < Test::Unit::TestCase
   def valid_syntax?(code, fname)
-    eval("BEGIN {return true}\n#{code}", nil, fname, 0)
+    code = code.sub(/\A(?:\s*\#.*$)*(\n)?/n) {
+      "#$&#{"\n" if $1 && !$2}BEGIN{return true}\n"
+    }
+    eval(code, nil, fname, 0)
   end
 
   def test_system