[ruby-core:108497] [Backport193 Backport#7134] Signal handling bug in Mac OS X

Issue #7134 has been updated by ioquatix (Samuel Williams).


Even without the change/fix proposed here, I cannot reproduce the original issue. Therefore, I assume something else has fixed this problem within the VM.

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Backport #7134: Signal handling bug in Mac OS X
https://bugs.ruby-lang.org/issues/7134#change-97542

* Author: auastro (Andy Kitchen)
* Status: Closed
* Priority: Normal
* Assignee: kosaki (Motohiro KOSAKI)
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On Mac OS X, running the attached program causes the exception below about 1/10 times it is run.

$ ruby hup.rb 
hup.rb:2:in `write': deadlock; recursive locking (ThreadError)
	from hup.rb:2:in `puts'
	from hup.rb:2:in `puts'
	from hup.rb:2:in `block in <main>'
	from hup.rb:6:in `call'
	from hup.rb:6:in `write'
	from hup.rb:6:in `puts'
	from hup.rb:6:in `puts'
	from hup.rb:6:in `<main>'

The expected output is:
> In Hup Handler
>Finished...

or

> Finished...
> In Hup Handler

My ruby is compiled with clang:

$ clang --version
Apple clang version 4.1 (tags/Apple/clang-421.11.65) (based on LLVM 3.1svn)
Target: x86_64-apple-darwin12.2.0
Thread model: posix


---Files--------------------------------
hup.rb (94 Bytes)
mutex_notrap.patch (4.32 KB)


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