Bug #2611: Hang while executing END blocks with redirected stderr

• Status: Closed
• Assignee: ko1 (Koichi Sasada)
• Target version: -
• ruby -v: ruby 1.9.1p129 (2009-05-12 revision 23412) [i386-mswin32]

[tmat (Tomas Matousek)]

=begin
The following code hangs with CPU on 100% at a random point during execution of END blocks.

class C
def write(x)
puts "[#{x}]"
end
end

$stderr = C.new

END {
raise 'e1'
}
END {
puts 'e2'
}
END {
raise 'e3'
}
END {
puts 'e4'
}
END {
raise 'e5'
}

output:

ruby 1.9.1p129 (2009-05-12 revision 23412) [i386-mswin32]
[END_exceptions.rb:22:in block in <main>'] [: ] [e5] [ (] [RuntimeError] [) ] e4 [END_exceptions.rb:16:in block in ']
[: ]
[e3]
[ (]
[RuntimeError]

---

Wrks fine in 1.8.6.
=end

[rogerdpack (Roger Pack)]

=begin
was able to reproduce this for 1.9.1p376 mingw, 1.9.2 mingw (not on linux, though--works fine there).
=end

[naruse (Yui NARUSE)]

• Status changed from Open to Assigned
• Assignee set to usa (Usaku NAKAMURA)

=begin

=end

[wanabe (_ wanabe)]

• File err_print.patch err_print.patch added
• Assignee changed from usa (Usaku NAKAMURA) to ko1 (Koichi Sasada)

=begin
I reproduced it on Ubuntu 9.10 by adding "sleep 0.01" at the first line of C#write.

blocking_region_begin() can't stop with th->raised_flag and th->interrupt_flag,
so raised_flag should be clear before entering blocking-region, I guess.

I wrote a patch, but it's doubtful that this is correct.
ko1, How do you think this issue?
=end

[wanabe (_ wanabe)]

=begin
I don't know my patch is good solution, But I think that it is not harmful.
I will commit the patch this weekend, unless any objection.
Anyone, Any comment?
=end

[wanabe (_ wanabe)]

• Status changed from Assigned to Closed
• % Done changed from 0 to 100

=begin
This issue was solved with changeset r28368.
Tomas, thank you for reporting this issue.
Your contribution to Ruby is greatly appreciated.
May Ruby be with you.

=end