Problem in extension with float value

[suresh]

Hi,

Today while playing with extension, I found one strange problem. I was trying to fill some text with Eggbot extension. I draw text, convert it to path and open "Hatchfill" extension of Eggbot, later I decided to not to fill the text, rather open one drawing for editing, which was pending from last 2 days, so I press ESC from the keyboard and I got Segmentation Fault. When I opened the hatch fill dialog focus was set in first spin button, after I found that inkscape crash with every extension If i try to set some value and rather apply press ESC from the keyboard and inkscape crash.

Below is the gdb log when it crashes on float.cpp.

(gdb) up
#1 0x08095be0 in std::list<sigc::slot_base, std::allocator<sigc::slot_base> >::insert (this=0xc54f138, __position=..., __x=...)
    at /usr/include/c++/4.4/bits/list.tcc:101
101 __tmp->hook(__position._M_node);
(gdb)
#2 0x0823e376 in temp_slot_list (this=0xb3e8bd0) at /usr/include/sigc++-2.0/sigc++/signal_base.h:182
182 placeholder = slots_.insert(slots_.end(), slot_base());
(gdb)
#3 sigc::internal::signal_emit0<void, sigc::nil>::emit (this=0xb3e8bd0) at /usr/include/sigc++-2.0/sigc++/signal.h:770
770 temp_slot_list slots(impl->slots_);
(gdb)
#4 sigc::signal0<void, sigc::nil>::emit (this=0xb3e8bd0) at /usr/include/sigc++-2.0/sigc++/signal.h:2671
2671 { return emitter_type::emit(impl_); }
(gdb)
#5 Inkscape::Extension::ParamFloatAdjustment::val_changed (this=0xb3e8bd0) at extension/param/float.cpp:135
135 _changeSignal->emit();

Please look into this bug and If possible give solution, so that I can use extension. Please let me know if you not able to regenerate the bug.

[Alvin Penner (apenner)]

- not reproduced on Windows XP, Inkscape rev 12066.
- however, there is a noticeable difference between trunk and Inkscape 0.48.4 in the behaviour of a spin box after editing and hitting Escape button, trunk is better imho.
- could you indicate which OS?, which version of Inkscape?, which extensions other than Hatchfill show this behaviour?

[suresh (suresh-meetsme)]

@Alvin,

OS: Ubuntu 10.04 LTS
Inkscape version: Inkscape 0.48.1 r

Yes, it is crashing with other extension also, I have also tried Polyhedron extension, it keeps crashing at the same position.

Let me know If you need more information.

[suresh (suresh-meetsme)]

Any updates...?

[Alvin Penner (apenner)]

is it possible for you to upgrade to a newer version, such as Inkscape 0.48.4, or a development build?

[su_v (suv-lp)]

>> inkscape crash with every extension If i try to set some value and
>> rather apply press ESC from the keyboard and inkscape crash.
>
> Inkscape version: Inkscape 0.48.1 r

Not reproduced with Inkscape 0.48.1 on OS X 10.7.4 (64bit) and Mac OS X 10.5.8 (32bit Intel), using the official Mac OS X package (32bit, compiled with '-O3').

[jazzynico (jazzynico)]

Reproduced on Windows XP, Inkscape 0.48.4.
Not reproduced with trunk revision 12119.

Steps:
1. Open a blank new document.
2. Launch Extensions>Render>Barcode
3. Double-click on the Bar Height value.
4. Set another value with the keyboard (not with the arrows!).
5. Press the Esc key.