[ruby-core:92689] [Ruby trunk Bug#15809] GC.verify_compaction_references - intermittent SEGV's on multiple platforms

From: Greg.mpls@...
Date: 2019-05-16 21:54:54 UTC
List: ruby-core #92689
Issue #15809 has been updated by MSP-Greg (Greg L).

File drb-test_drbobject.rb.patch added

I added a patch to (hopefully) allow `ruby/test_gc_compact.rb` to run with the rest of tests, which may help in determining if more tests are incompatible with it.

Decreased the 'time-to-live' of `DRb::TimerIdConv` objects from the default (600) to 0.2...

----------------------------------------
Bug #15809: GC.verify_compaction_references - intermittent SEGV's on multiple platforms
https://bugs.ruby-lang.org/issues/15809#change-78048

* Author: MSP-Greg (Greg L)
* Status: Assigned
* Priority: Normal
* Assignee: tenderlovemaking (Aaron Patterson)
* Target version: 
* ruby -v: ruby 2.7.0dev (2019-05-06 trunk c3cf1ef9bb) [x64-mingw32
* Backport: 2.4: UNKNOWN, 2.5: UNKNOWN, 2.6: UNKNOWN
----------------------------------------
See

https://travis-ci.org/ruby/ruby/jobs/525627187#L2684
https://ci.appveyor.com/project/ruby/ruby/builds/24138134/job/i7e441u7se11w7ey#L3402

Both have an error similar to:
```
/ruby/test/ruby/test_gc_compact.rb:128: [BUG] ROOT finalizers points to MOVED:
  0x0000000004679c20 -> 0x00000000089367c0 [0     ] T_ARRAY [E ] len: 1 (embed)
```

ruby-loco has also failed with a similar error.  Attached STDERR output.

---Files--------------------------------
test_all_err.log (42 KB)
drb-test_drbobject.rb.patch (800 Bytes)


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