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bug#17184: 24.3.50; crash while bootstrapping current trunk


From: Daniel Colascione
Subject: bug#17184: 24.3.50; crash while bootstrapping current trunk
Date: Tue, 08 Apr 2014 05:21:55 -0700
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.4.0

On 04/08/2014 04:20 AM, Nicolas Richard wrote:
> Eli Zaretskii <address@hidden> writes:
> 
>>> From: Nicolas Richard <address@hidden>
>>> Date: Fri, 04 Apr 2014 17:26:36 +0200
>>>
>>> So I tried this:
>>> $ gdb --args emacs --batch  -f batch-byte-compile 
>>> ../lisp/emacs-lisp/tcover-ses.el
>>>
>>> and here's what happens:
>>>
>>> Breakpoint 1, terminate_due_to_signal (sig=6, backtrace_limit=40) at 
>>> emacs.c:355
>>> 355   signal (sig, SIG_DFL);
>>>
>>> it aborts because of this in data.c:
>>>   /* Convert to eassert or remove after GC bug is found.  In the
>>>      meantime, check unconditionally, at a slight perf hit.  */
>>>   if (valid_lisp_object_p (definition) < 1)
>>>     emacs_abort ();
>>>
>>> Here's the backtrace:

Interesting. It works for me --- 64- and 32-bit builds. What happens if
you add that Ffset check to emacs-24? What symbol are we trying to set?
(Use xsymbol.) What does valid_lisp_object_p (definition) actually
return when you call it? Can you share your binary and core dump?

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