Re: [Gimp-developer] Precision Conversion Dithering and Triangular wave gradient issues

[Elle Stone <ellestone ninedegreesbelow com>]

On 09/02/2014 12:49 PM, Michael Henning wrote:
> I tried playing around with the triangular wave gradients, and I can't
> make the second segfault happen. Do you think you could run gimp in
> gdb and generate a backtrace? Thanks.
>
>   -- drawoc

Not sure if I did this right. I usually start GIMP using a script that 
specifies where all the libraries are, but gdb said the script wasn't a 
proper executable, so I just ran bin/gimp-2.9:

gdb gimp-2.9
GNU gdb (Gentoo 7.6.2 p1) 7.6.2
Copyright (C) 2013 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later 
<http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-pc-linux-gnu".
For bug reporting instructions, please see:
<http://bugs.gentoo.org/>...
Reading symbols from /home/elle/code/gimpdefault/run/bin/gimp-2.9...done.
(gdb) break fpc_raiseexception
Function "fpc_raiseexception" not defined.
Make breakpoint pending on future shared library load? (y or [n]) n
(gdb) run
Starting program: /home/elle/code/gimpdefault/run/bin/gimp-2.9
warning: Could not load shared library symbols for linux-vdso.so.1.
Do you need "set solib-search-path" or "set sysroot"?
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
[New Thread 0x7fffeaea8700 (LWP 3186)]
This is a development version of GIMP.  Debug messages may appear here.

[New Thread 0x7fffc96d5700 (LWP 3188)]
[New Thread 0x7fffc8ed4700 (LWP 3189)]
[Thread 0x7fffc96d5700 (LWP 3188) exited]
[New Thread 0x7fffc96d5700 (LWP 3197)]
gradient_fill_region: gradient_fill_region took 0.1054 seconds
gradient_fill_region: gradient_fill_region took 0.1032 seconds
gradient_fill_region: gradient_fill_region took 0.1111 seconds
gradient_fill_region: gradient_fill_region took 0.1057 seconds
gradient_fill_region: gradient_fill_region took 3.9845 seconds

Program received signal SIGSEGV, Segmentation fault.
0x00000000004e7b7f in gimp_blend_tool_motion (tool=0x33f3370, 
coords=<optimized out>, time=<optimized out>, state=GDK_BUTTON1_MASK, 
display=0xe58180)
    at gimpblendtool.c:450
450       if (GIMP_IS_CANVAS_LINE (blend_tool->line))
(gdb)