Comment 0 for bug 168943

On ubuntu, the latest autopackage version (inkscape200709061136 - haven't
tested other packages or versions, or operating systems) crashes when a
straight path with all the nodes aligned vertically or horizontally is
blurred. The crash will not occur if the path has a curve, or all the nodes
are not aligned vertically or horizontally. The crash occurs whether the
line is drawn with the nodes aligned and then blurred, or if a line with
nodes not aligned vertically or horizontally is blurred, and then the nodes
aligned.

To cause this crash:
1. Using the bezier tool, draw a straight line constrained vertically or
horizontally
2. Blur the line (I did this with the fill and stroke dialog. Maybe
manually blurring would not cause the crash?)

gdb output:

glibmm-ERROR **:
unhandled exception (type std::exception) in signal handler:
what: Is nothing

aborting...

Program received signal SIGABRT, Aborted.
[Switching to Thread -1225590560 (LWP 19970)]
0xffffe410 in __kernel_vsyscall ()
(gdb) bt
#0 0xffffe410 in __kernel_vsyscall ()
#1 0xb7059df0 in raise () from /lib/tls/i686/cmov/libc.so.6
#2 0xb705b641 in abort () from /lib/tls/i686/cmov/libc.so.6
#3 0xb739270a in g_logv () from /usr/lib/libglib-2.0.so.0
#4 0xb7392749 in g_log () from /usr/lib/libglib-2.0.so.0
#5 0x0852ffb3 in Glib::exception_handlers_invoke ()
#6 0x08534e93 in Glib::SignalProxyNormal::slot0_void_callback ()
#7 0xb759e9d9 in g_cclosure_marshal_VOID__VOID ()
   from /usr/lib/libgobject-2.0.so.0
#8 0xb759162b in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
#9 0xb75a23f1 in ?? () from /usr/lib/libgobject-2.0.so.0
#10 0x0ada1190 in ?? ()
#11 0x00000000 in ?? ()