Re: [Tuxpaint-devel] Rails plugin release

[Andrew C. <aka...@gm...>]

Just had two issues with the rails tool, not sure exactly whats happening

1) Segmentation fault. Basically if you drag outside the canvas area theres
a chance the tool will crash. Not 100% repeatable.

PS: Hmm I just tried this with one of the paint brushes and the same thing
happened, managed to repeat it three times now but not 100% repeatable,
maybe this is a global problem?

2) Just had a crash when exiting tuxpaint with the latest version of rails.c
from the cvs.
Ive managed to repeat it several times but still not 100% repeatable. It
happens when switcihing between multiple tools including the rails tool.
Seems like its something to do with the switchout function freeing data it
shouldnt, below is the trace for one of the crashes.

Looks like its an issue with the switchout function

andy@andy-desktop:~/tuxpaint$ tuxpaint --nolockfile
*** glibc detected *** tuxpaint: double free or corruption (!prev):
0x08b3d2e8 ***
======= Backtrace: =========
/lib/tls/i686/cmov/libc.so.6[0xb7b6ba85]
/lib/tls/i686/cmov/libc.so.6(cfree+0x90)[0xb7b6f4f0]
/usr/local/lib/tuxpaint/plugins/rails.so(rails_shutdown+0xaf)[0xb60f504f]
tuxpaint[0x804eb9f]
tuxpaint[0x8069d35]
/lib/tls/i686/cmov/libc.so.6(__libc_start_main+0xe0)[0xb7b16450]
tuxpaint[0x804b541]
======= Memory map: ========
08048000-0807b000 r-xp 00000000 08:01 418188     /usr/local/bin/tuxpaint
0807b000-0807d000 rw-p 00032000 08:01 418188     /usr/local/bin/tuxpaint
0807d000-08bd4000 rw-p 0807d000 00:00 0          [heap]
b4000000-b4022000 rw-p b4000000 00:00 0
b4022000-b4100000 ---p b4022000 00:00 0
b4185000-b41b9000 r-xp 00000000 08:01 340442     /usr/lib/libdbus-1.so.3.4.0
b41b9000-b41bb000 rw-p 00033000 08:01 340442     /usr/lib/libdbus-1.so.3.4.0
b41bb000-b424c000 r--p 00000000 08:01 458875
/usr/share/fonts/truetype/ttf-dejavu/DejaVuSans.ttf
b424c000-b42dd000 r--p 00000000 08:01 458875
/usr/share/fonts/truetype/ttf-dejavu/DejaVuSans.ttf
b42dd000-b4364000 rw-p b42dd000 00:00 0
b4387000-b43a7000 r-xp 00000000 08:01 361125
/usr/lib/gio/modules/libgvfsdbus.so
b43a7000-b43a8000 rw-p 0001f000 08:01 361125
/usr/lib/gio/modules/libgvfsdbus.so
b4443000-b444a000 r-xp 00000000 08:01 107864     /lib/tls/i686/cmov/
librt-2.7.so
b444a000-b444c000 rw-p 00006000 08:01 107864     /lib/tls/i686/cmov/
librt-2.7.so
b4467000-b44a8000 rw-p b4467000 00:00 0
b44a8000-b44aa000 r-xp 00000000 08:01 456168
/usr/local/lib/tuxpaint/plugins/tint.so
b44aa000-b44ab000 rw-p 00001000 08:01 456168
/usr/local/lib/tuxpaint/plugins/tint.so
b5bff000-b5d03000 rw-p b5bff000 00:00 0
b5d05000-b5d07000 r-xp 00000000 08:01 107868     /lib/tls/i686/cmov/
libutil-2.7.so
b5d07000-b5d09000 rw-p 00001000 08:01 107868     /lib/tls/i686/cmov/
libutil-2.7.so
b5d09000-b5e22000 rw-p b5d09000 00:00 0
b5e22000-b5eb3000 r--p 00000000 08:01 458875
/usr/share/fonts/truetype/ttf-dejavu/DejaVuSans.ttf
b5eb3000-b6088000 rw-s 00000000 00:09 2686995    /SYSV00000000 (deleted)
b60c7000-b60cb000 r-xp 00000000 08:01 340149
/usr/lib/libgthread-2.0.so.0.1600.3
b60cb000-b60cc000 rw-p 00003000 08:01 340149
/usr/lib/libgthread-2.0.so.0.1600.3
b60cc000-b60ce000 r-xp 00000000 08:01 456156
/usr/local/lib/tuxpaint/plugins/light.so
b60ce000-b60cf000 rw-p 00001000 08:01 456156
/usr/local/lib/tuxpaint/plugins/light.so
b60cf000-b60d1000 r-xp 00000000 08:01 456163
/usr/local/lib/tuxpaint/plugins/ripples.so
b60d1000-b60d2000 rw-p 00001000 08:01 456163
/usr/local/lib/tuxpaint/plugins/ripples.so
b60d2000-b60d4000 r-xp 00000000 08:01 455826
/usr/local/lib/tuxpaint/plugins/calligraphy.so
b60d4000-b60d5000 rw-p 00001000 08:01 455826
/usr/local/lib/tuxpaint/plugins/calligraphy.so
b60d5000-b60d7000 r-xp 00000000 08:01 455828
/usr/local/lib/tuxpaint/plugins/confetti.so
b60d7000-b60d8000 rw-p 00001000 08:01 455828
/usr/local/lib/tuxpaint/plugins/confetti.so
b60d8000-b60da000 r-xp 00000000 08:01 456118
/usr/local/lib/tuxpaint/plugins/fill.so
b60da000-b60db000 rw-p 00001000 08:01 456118
/usr/local/lib/tuxpaint/plugins/fill.so
b60db000-b60dd000 r-xp 00000000 08:01 455822
/usr/local/lib/tuxpaint/plugins/blackAndWhite.so
b60dd000-b60de000 rw-p 00001000 08:01 455822
/usr/local/lib/tuxpaint/plugins/blackAndWhite.so
b60de000-b60e0000 r-xp 00000000 08:01 456165
/usr/local/lib/tuxpaint/plugins/shift.so
b60e0000-b60e1000 rw-p 00001000 08:01 456165
/usr/local/lib/tuxpaint/plugins/shift.so
b60e1000-b60e3000 r-xp 00000000 08:01 456121
/usr/local/lib/tuxpaint/plugins/foam.so
b60e3000-b60e4000 rw-p 00001000 08:01 456121
/usr/local/lib/tuxpaint/plugins/foam.so
b60e4000-b60e5000 r-xp 00000000 08:01 456166
/usr/local/lib/tuxpaint/plugins/smudge.so
b60e5000-b60e6000 rw-p 00001000 08:01 456166
/usr/local/lib/tuxpaint/plugins/smudge.so
b60e6000-b60ec000 rw-p b60e6000 00:00 0
b60ec000-b60ee000 r-xp 00000000 08:01 455823
/usr/local/lib/tuxpaint/plugins/blocks_chalk_drip.so
b60ee000-b60ef000 rw-p 00001000 08:01 455823
/usr/local/lib/tuxpaint/plugins/blocks_chalk_drip.so
b60ef000-b60f0000 r-xp 00000000 08:01 455829
/usr/local/lib/tuxpaint/plugins/distortion.so
b60f0000-b60f1000 rw-p 00000000 08:01 455829
/usr/local/lib/tuxpaint/plugins/distortion.so
b60f1000-b60f3000 r-xp 00000000 08:01 456123     /usr/local/lAborted
andy@andy-desktop:~/tuxpaint$