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bug#17771: 24.3.91; SIGSEGV in cleanup_vector


From: Eli Zaretskii
Subject: bug#17771: 24.3.91; SIGSEGV in cleanup_vector
Date: Fri, 13 Jun 2014 16:44:39 +0300

> From: Stephen Berman <stephen.berman@gmx.net>
> Cc: 17771@debbugs.gnu.org
> Date: Fri, 13 Jun 2014 15:34:12 +0200
> 
> On Fri, 13 Jun 2014 16:28:54 +0300 Eli Zaretskii <eliz@gnu.org> wrote:
> 
> >> From: Stephen Berman <stephen.berman@gmx.net>
> >> Cc: 17771@debbugs.gnu.org
> >> Date: Fri, 13 Jun 2014 14:39:42 +0200
> >> 
> >> Program received signal SIGSEGV, Segmentation fault.
> >> 0x00000000005aa564 in cleanup_vector (vector=0x413c318)
> >>     at ../../../../bzr/emacs/emacs-24/src/alloc.c:2929
> >> 2929          ((struct font *) vector)->driver->close ((struct font *) 
> >> vector);
> >> (gdb) p vector
> >> $1 = (struct Lisp_Vector *) 0x413c318
> >> (gdb) p vector->driver
> >> There is no member named driver.
> >> (gdb) p vector->driver->close
> >> There is no member named driver.
> >
> >  (gdb) p ((struct font *) vector)->driver
> >  (gdb) p ((struct font *) vector)->driver->close
> 
> (gdb) p ((struct font *) vector)->driver
> $4 = (struct font_driver *) 0x0
> (gdb) p ((struct font *) vector)->driver->close
> Cannot access memory at address 0x40

IOW, the font driver is NULL.





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