Issue #14474 has been reported by ko1 (Koichi Sasada).

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Bug #14474: skip "TestException#test_thread_signal_location" as known bug
https://bugs.ruby-lang.org/issues/14474

* Author: ko1 (Koichi Sasada)
* Status: Open
* Priority: Normal
* Assignee: 
* Target version: 2.6
* ruby -v: 2.6
* Backport: 2.3: UNKNOWN, 2.4: UNKNOWN, 2.5: UNKNOWN
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`TestException#test_thread_signal_location` fails randomly

https://gist.github.com/ko1/797b0f058f2d09ae57c9af1ee07a42b2#file-brlog-trunk-nopara-20180213-224440-L380
> `[BUG] pthread_mutex_lock: Invalid argument (EINVAL)`

https://gist.github.com/ko1/df41bb11a19792a14417c9332e70171e#file-brlog-trunk-asserts-nopara-20180213-081040-L438
> `[BUG] Segmentation fault at 0x0000000000000000`

and so on.

This test consists of signal, threads, termination process, and so on.
I've tried to investigate but no idea. Additionally, it is hard to reproduce.

To keep CI clean, I skip this test, file about this issue and wait for a person who can solve this issue.

Thanks,
Koichi



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