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-rw-r--r--test/ruby/test_io.rb3
1 files changed, 3 insertions, 0 deletions
diff --git a/test/ruby/test_io.rb b/test/ruby/test_io.rb
index a82cac239b..ba85b847be 100644
--- a/test/ruby/test_io.rb
+++ b/test/ruby/test_io.rb
@@ -632,6 +632,9 @@ class TestIO < Test::Unit::TestCase
assert_raise(Errno::EMFILE, Errno::ENFILE, Errno::ENOMEM) do
loop {a << IO.pipe}
end
+ assert_raise(Errno::EMFILE, Errno::ENFILE, Errno::ENOMEM) do
+ loop {a[-1][0].dup; a[-1][1].dup}
+ end
a.each do |r, w|
r.close unless !r || r.closed?
w.close unless !w || w.closed?