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-rw-r--r--test/ruby/test_io.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/test/ruby/test_io.rb b/test/ruby/test_io.rb
index 4d9bb51fe3..2b6810e055 100644
--- a/test/ruby/test_io.rb
+++ b/test/ruby/test_io.rb
@@ -581,7 +581,7 @@ class TestIO < Test::Unit::TestCase
def ruby(*args)
args = ['-e', '$>.write($<.read)'] if args.empty?
ruby = EnvUtil.rubybin
- f = IO.popen([ruby] + args, 'r+')
+ f = IO.popen([ruby, "--disable-gems"] + args, 'r+')
yield(f)
ensure
f.close unless !f || f.closed?