From: Peter Zotov <whitequark@...>
Date: 2012-06-07T03:27:39+09:00
Subject: Re: Deadlock in large vm_xmalloc while doing backtrace

William Paulson писал 06.06.2012 17:42:
>> Bill Paulson писал 05.06.2012 22:52:

>> Take a look at ruby's gdbinit:
>>  http://rxr.whitequark.org/mri/source/.gdbinit
>>
>> For example, try rb_backtrace or rb_ps at gdb's prompt.
>>
> The ruby we're running doesn't seem to have debug.c compiled into it.
> The .gdbinit file fails with a message
> No symbol "ruby_dummy_gdb_enums" in current context.
> Do you know what compile flags cause debug.c to be included?
> Thanks
> Bill Paulson

I compile my Rubies with rvm[1], and it inserts debug flags 
automatically.
I'd say you should look into options of ./configure script: something 
like
--with-debug=yes should make the trick.

  [1]: https://rvm.io/

-- 
   WBR, Peter Zotov.