[#87847] undefined symbol: mjit_init_p — Leam Hall <leamhall@...>

I pulled Ruby trunk on 3 Jul and am now getting errors similar to the

10 messages 2018/07/07

[#88088] [Ruby trunk Misc#14937] [PATCH] thread_pthread: lazy-spawn timer-thread only on contention — normalperson@...

Issue #14937 has been reported by normalperson (Eric Wong).

9 messages 2018/07/24

[ruby-core:87900] [Ruby trunk Bug#14906] MinGW failure - TestIO#test_copy_stream_no_busy_wait

From: Greg.mpls@...
Date: 2018-07-11 04:17:43 UTC
List: ruby-core #87900
Issue #14906 has been reported by MSP-Greg (Greg L).

----------------------------------------
Bug #14906: MinGW failure - TestIO#test_copy_stream_no_busy_wait
https://bugs.ruby-lang.org/issues/14906

* Author: MSP-Greg (Greg L)
* Status: Open
* Priority: Normal
* Assignee: 
* Target version: 
* ruby -v: ruby 2.6.0dev (2018-07-11 trunk 63945) [x64-mingw32]
* Backport: 2.3: UNKNOWN, 2.4: UNKNOWN, 2.5: UNKNOWN
----------------------------------------
ruby-loco just had a failure on `TestIO#test_copy_stream_no_busy_wait` for the first time.

```
  8) Failure:
TestIO#test_copy_stream_no_busy_wait [C:/projects/ruby-loco/src/ruby/test/ruby/test_io.rb:557]:
r58534 [ruby-core:80969] [Backport #13533].
Expected 0.031000000000000028 to be <= 0.016417910447761194.
```

This was on Appveyor, it passed during parallel, but failed on retry, as `TestIO#test_write_no_garbage` failed during parallel, which is common.

I haven't really looked at it, or especially `assert_cpu_usage_low`, but a change to loosen the test up would be helpful.

BTW, it was the only failure on r63945.  I haven't really analyzed it, but Appveyor does seem slower just in the last day or so...

Thanks, Greg



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