bug#18501: Acknowledgement (24.3.93; OS X; crash in free() when calling macfont_close())

[Dmitry Antipov]

On 09/19/2014 10:05 PM, Jim Radford wrote:

> Here are the two calls that free the font:
>
>      frame #1: 0x00000001001c5ffd Emacs`macfont_close(font=0x0000000105c2a8c0) 
> + 13 at macfont.m:2621
>      frame #2: 0x000000010014de80 Emacs`font_clear_cache(f=<unavailable>, 
> cache=<unavailable>, driver=<unavailable>) + 304 at font.c:2620
>
>      frame #1: 0x00000001001c5ffd Emacs`macfont_close(font=0x0000000105c2a8c0) 
> + 13 at macfont.m:2621
>      frame #2: 0x000000010011be9d Emacs`Fgarbage_collect [inlined] 
> cleanup_vector + 38 at alloc.c:2935
>
> Notice that the pointer is the same in both cases.  Both cleanup_vector() and 
> font_clear_cache() call
>
>      drv->close(font)
>
> It seems that font_clear_cache is leaving the font around for the GC to clean 
> up (a second time) later.

Please try this.

Dmitry

bug18501.patch
Description: Text Data