io.c: don't raise after close

* io.c (rb_io_close_read, rb_io_close_write): don't raise after
  close same as IO#close.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49961 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 9 insertions, 0 deletions

diff --git a/test/ruby/test_io.rb b/test/ruby/test_io.rb
index 600373a06c..81b99d55d1 100644
--- a/test/ruby/test_io.rb
+++ b/test/ruby/test_io.rb
@@ -1364,6 +1364,9 @@ class TestIO < Test::Unit::TestCase
       f.close_read
       f.write "foobarbaz"
       assert_raise(IOError) { f.read }
+      assert_nothing_raised(IOError) {f.close_read}
+      assert_nothing_raised(IOError) {f.close}
+      assert_nothing_raised(IOError) {f.close_read}
     end
   end
 
@@ -1371,6 +1374,9 @@ class TestIO < Test::Unit::TestCase
     with_pipe do |r, w|
       r.close_read
       assert_raise(Errno::EPIPE) { w.write "foobarbaz" }
+      assert_nothing_raised(IOError) {r.close_read}
+      assert_nothing_raised(IOError) {r.close}
+      assert_nothing_raised(IOError) {r.close_read}
     end
   end
 
@@ -1398,6 +1404,9 @@ class TestIO < Test::Unit::TestCase
       f.write "foobarbaz"
       f.close_write
       assert_equal("foobarbaz", f.read)
+      assert_nothing_raised(IOError) {f.close_write}
+      assert_nothing_raised(IOError) {f.close}
+      assert_nothing_raised(IOError) {f.close_write}
     end
   end