bug#16126: 24.3.50; segfault on Cygwin

[Katsumi Yamaoka]

Dmitry Antipov wrote:
> On 12/13/2013 06:07 AM, Katsumi Yamaoka wrote:
>> Program received signal SIGSEGV, Segmentation fault.
>> 0x0053c90d in font_close_object (font_object=font_object@entry=538803829)
>>      at font.c:2902
>> 2902   FRAME_DISPLAY_INFO (font->frame)->n_fonts--;

> Do you have --enable-checking enabled?

Ok, I used --enable-checking=yes and CFLAGS=-O0, and rebuilt
Emacs.

> If font->frame is not NULL, could you also please do:
> (gdb) p *font->frame
> and
> (gdb) p *font->frame->output_data.x->display_info

Program received signal SIGSEGV, Segmentation fault.
0x005ce4d5 in font_close_object ()
(gdb) p font->frame
No symbol "font" in current context.
(gdb) p *font->frame
No symbol "font" in current context.
(gdb) p *font->frame->output_data.x->display_info
No symbol "font" in current context.

Hm, there is no meaningful info, isn't it?
Before this I rebuilt Emacs without specifying CFLAGS, and got
``value has been optimized out'' for all those.

Thanks.