From: "h.shirosaki (Hiroshi Shirosaki)" <h.shirosaki@...>
Date: 2012-04-17T07:23:13+09:00
Subject: [ruby-core:44398] [ruby-trunk - Bug #6228] [mingw] Errno::EBADF in ruby/test_io.rb on ruby_1_9_3


Issue #6228 has been updated by h.shirosaki (Hiroshi Shirosaki).


This issue seems to be related to GC finalizer.
GC is triggered just before Errno::EBADF occurs, and finalizer closes the fd of make_tempfile. Errno::EBADF is raised for trying to close again the closed fd of make_tempfile.

This seems due to `test_flush_in_finalizer1`.

     500.times {
       f = File.open(path, "w")
       fds << f.fileno
       f.print "hoge"
     }

`f` is not closed. When GC sweeps `f`, the fd associated with `f` seems to be closed.
`fds` contains `3`. And make_tempfile in `test_invalid_advise` creates fd of 3.


I confirmed the error disappeared with the following patch.
-DFD_SETSEZE=32767 and ruby 1.9.3p184 (2012-04-15 revision 35335) [i386-mingw32] on Windows 7.


diff --git a/test/ruby/test_io.rb b/test/ruby/test_io.rb
index edf449d..70ca240 100644
--- a/test/ruby/test_io.rb
+++ b/test/ruby/test_io.rb
@@ -1800,6 +1800,7 @@ End
     end
   ensure
     fds.each {|fd| IO.for_fd(fd).close rescue next}
+    GC.start
   end
 
   def test_flush_in_finalizer2

----------------------------------------
Bug #6228: [mingw] Errno::EBADF in ruby/test_io.rb on ruby_1_9_3
https://bugs.ruby-lang.org/issues/6228#change-25945

Author: jonforums (Jon Forums)
Status: Assigned
Priority: Normal
Assignee: luislavena (Luis Lavena)
Category: test
Target version: 1.9.3
ruby -v: ruby 1.9.3p172 (2012-03-30 revision 35179) [i386-mingw32]


On Win7 32bit built with MinGW 4.6.2 using the RubyInstaller build recipes, I get the following test error:


sh-3.1$ ruby --version
ruby 1.9.3p172 (2012-03-30 revision 35179) [i386-mingw32]

sh-3.1$ make test-all TESTS='openssl fiddle psych zlib io json mkmf pathname stringio erb 
fileutils ruby/test_io.rb ruby/test_io_m17n.rb ruby/test_file.rb'

  7) Error:
test_lines(TestIO):
Errno::EBADF: Bad file descriptor
    c:/Users/Jon/Documents/RubyDev/ruby-git/test/ruby/test_io.rb:33:in `close'
    c:/Users/Jon/Documents/RubyDev/ruby-git/test/ruby/test_io.rb:33:in `rescue in block in pipe'
    c:/Users/Jon/Documents/RubyDev/ruby-git/test/ruby/test_io.rb:30:in `block in pipe'


-- 
http://bugs.ruby-lang.org/