[#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:88230] [Ruby trunk Bug#14756] `Exception` may cause SEGV when `#backtrace` returns a string

From: usa@...
Date: 2018-07-31 14:01:59 UTC
List: ruby-core #88230
Issue #14756 has been updated by usa (Usaku NAKAMURA).

Backport changed from 2.3: REQUIRED, 2.4: REQUIRED, 2.5: REQUIRED to 2.3: REQUIRED, 2.4: DONE, 2.5: REQUIRED

ruby_2_4 r64147 merged revision(s) 63417.

----------------------------------------
Bug #14756: `Exception` may cause SEGV when `#backtrace` returns a string
https://bugs.ruby-lang.org/issues/14756#change-73253

* Author: yui-knk (Kaneko Yuichiro)
* Status: Closed
* Priority: Normal
* Assignee: 
* Target version: 
* ruby -v: ruby 2.6.0dev (2018-05-13 trunk 63413) [x86_64-linux]
* Backport: 2.3: REQUIRED, 2.4: DONE, 2.5: REQUIRED
----------------------------------------
This code causes SEGV, because `print_backtrace` expects second argument to be an array but a string is given.

```ruby
class Exception
  def backtrace
    "backtrace"
  end
end

"".a
```

Also in ruby 2.3.7, 2.4.4, 2.5.1.



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