Re: [Bug: 21.4.21] Segfault on reading png

On Thu, 26 Jun 2008 23:39:48 +0200, Aidan wrote:

> I would be super-interested in the values of ximage, of ximage->f, and > of ximage-> f.destroy_image in that stack frame. You’ll need to do > something like the following within GDB to have that shown:

> (gdb) up 6 > (gdb) p ximage > (gdb) p ximage->f > (gdb) p ximage->f.destroy_image

up 6 didn't work ('No symbol "ximage" in current context.'), so I tried up 5 instead and got this (complete output included at the bottom):

(gdb) up 5 #5 0x00000000005d434c in x_init_image_instance_from_eimage (ii=0xdb0160, width=63, height=19, slices=1, eimage=0xdcf120 "âáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáä}}{âáäâáäâáäâá"..., dest_mask=-1, instantiator=13493120, domain=13403264) at glyphs-x.c:988 988 XDestroyImage (ximage); (gdb) p ximage $1 = (XImage *) 0xdc91f0 (gdb) p ximage->f $2 = {create_image = 0x7f8c7e147e10 <XCreateImage>, destroy_image = 0x7f8c7e1481b0, get_pixel = 0x7f8c7e147570, put_pixel = 0x7f8c7e147880, sub_image = 0x7f8c7e147ff0, add_pixel = 0x7f8c7e147c90} (gdb) p ximage->f.destroy_image $3 = (int (*)(struct _XImage *)) 0x7f8c7e1481b0