GNU bug report logs - #21132
25.0.50; Emacs on Windows crashes evaluating x-frame-geometry in batch mode

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From: martin rudalics <rudalics <at> gmx.at>
To: Eli Zaretskii <eliz <at> gnu.org>, Francis Litterio <flitterio <at> gmail.com>
Cc: 21132 <at> debbugs.gnu.org
Subject: bug#21132: 25.0.50; Emacs on Windows crashes evaluating x-frame-geometry in batch mode
Date: Sat, 25 Jul 2015 20:17:39 +0200

>> Emacs built from the latest source on Windows crashes when invoked
>> as follows:
>>
>>    emacs.exe -Q -batch --eval="(x-frame-geometry (selected-frame))"
>
> Thanks, fixed.

Do you have any simple guideline how to find similar instances of this
bug?  And what is the difference between !FRAME_INITIAL_P (f) and
FRAME_W32_WINDOW (f)?  I suppose that !FRAME_INITIAL_P (f) implies
FRAME_W32_WINDOW (f).  So there are probably cases when we use
FRAME_W32_WINDOW (f) and FRAME_INITIAL_P (f) holds.  Right?

And do we prefer (FRAME_W32_WINDOW (f) != 0) to (!FRAME_W32_WINDOW (f))?
Also I believe that I should replace FRAME_X_WINDOW by FRAME_W32_WINDOW.

> I believe similar changes are needed in xfns.c and in nsfns.m, could
> someone with access to the relevant OSes please check and apply?

I'll look into these.

Thanks for the quick fix, martin

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