bug#24790: Segmentation fault when changing default font on master

[Clément Pit--Claudel]

On 2016-10-25 12:43, Eli Zaretskii wrote:
>> From: Clément Pit--Claudel <clement.pitclaudel@live.com>
>> Date: Tue, 25 Oct 2016 10:33:32 -0400
>>
>> When I select the attached font from the "Set default font" menu, nothing 
>> happens (the default font does not change).  When I select it again, emacs 
>> segfaults (see attached output of bt full).
>>
>> My Emacs has patch af1a69f4d17a482c359d98c00ef86fac835b5fac reverted.  Could 
>> this make a difference?
> 
> With such a simple reproducer, it's much easier to re-apply the patch
> and see if it makes the difference than answer your question by just
> looking at your data.

Indeed, and it seems that my reversing this patch is what caused the issue 
(IOW, I can't crash Emacs any more after re-applying the patch).

Interestingly, if I use 'light as the weight, the right font is selected, and 
everything works fine (that is, the default frame font changes and Emacs 
doesn't crash).  But for some reason, x-select-font returns a font-spec in 
semi-light, and then set-frame-font crashes.

> Why do you still have that commit reverted, btw?  I thought the
> problem caused by it is nowadays solved: you have a variable to avoid
> it.

I never heard about that variable :) Which one is it?

Clément.

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