Crash in SVG font editor on "New"

[Susanne Wunsch]

Start Inkscape
Open SVG Font Editor
Clicking "New" button

... causes crash

several times the same output:

** (inkscape:13930): WARNING **: Called helperfns_read_number with value==null_ptr, this can lead to unexpected behaviour.

stack trace:

#0 0x2a615417 in kill () from /lib/libc.so.7
#1 0x2a51f387 in raise () from /lib/libthr.so.3
#2 0x2a613fac in abort () from /lib/libc.so.7
#3 0x28dab312 in uw_init_context_1 () from /usr/local/lib/libglibmm-2.4.so.1
#4 0x28dab4f5 in _Unwind_RaiseException ()
   from /usr/local/lib/libglibmm-2.4.so.1
#5 0x2a48341d in __cxa_throw () from /usr/lib/libstdc++.so.6
#6 0x2a4d9877 in std::__throw_runtime_error () from /usr/lib/libstdc++.so.6
#7 0x2a4d85d1 in std::locale::facet::_S_create_c_locale ()
   from /usr/lib/libstdc++.so.6
#8 0x2a45b6a5 in std::locale::_Impl::_Impl () from /usr/lib/libstdc++.so.6
#9 0x2a45d66d in std::locale::locale () from /usr/lib/libstdc++.so.6
#10 0x0855265f in Gtk::manage<Gtk::RadioButton> ()
#11 0x085531f0 in Gtk::manage<Gtk::RadioButton> ()
#12 0x085503e5 in Gtk::manage<Gtk::RadioButton> ()
#13 0x0855163a in Gtk::manage<Gtk::RadioButton> ()
#14 0x08520ee4 in Gtk::manage<Gtk::RadioButton> ()
#15 0x080971ec in std::list<sigc::slot_base, std::allocator<sigc::slot_base> >::erase ()
#16 0x080975fc in std::list<sigc::slot_base, std::allocator<sigc::slot_base> >::erase ()
#17 0x08460f01 in Glib::ListHandle<Gtk::TreePath, Gtk::TreePath_Traits>::~ListHandle ()
#18 0x28da0ea9 in Glib::SignalProxyNormal::slot0_void_callback ()
   from /usr/local/lib/libglibmm-2.4.so.1
#19 0x298f9e90 in g_cclosure_marshal_VOID__VOID ()
   from /usr/local/lib/libgobject-2.0.so.0
#20 0x298e4bed in g_closure_invoke () from /usr/local/lib/libgobject-2.0.so.0
#21 0x298f8ea6 in g_signal_has_handler_pending ()
   from /usr/local/lib/libgobject-2.0.so.0
#22 0x298f9890 in g_signal_emit_valist ()
   from /usr/local/lib/libgobject-2.0.so.0
#23 0x298f9ad4 in g_signal_emit () from /usr/local/lib/libgobject-2.0.so.0
#24 0x2918fb5a in gtk_button_clicked () from /usr/local/lib/libgtk-x11-2.0.so.0
#25 0x29191b2e in gtk_button_set_alignment ()
   from /usr/local/lib/libgtk-x11-2.0.so.0
#26 0x28a721c4 in Gtk::Button_Class::released_callback ()
   from /usr/local/lib/libgtkmm-2.4.so.1
#27 0x298f9e90 in g_cclosure_marshal_VOID__VOID ()
   from /usr/local/lib/libgobject-2.0.so.0
#28 0x298e4e99 in g_cclosure_new_swap ()
   from /usr/local/lib/libgobject-2.0.so.0
#29 0x298e4bed in g_closure_invoke () from /usr/local/lib/libgobject-2.0.so.0
#30 0x298f8339 in g_signal_has_handler_pending ()
   from /usr/local/lib/libgobject-2.0.so.0
#31 0x298f9890 in g_signal_emit_valist ()
   from /usr/local/lib/libgobject-2.0.so.0
#32 0x298f9ad4 in g_signal_emit () from /usr/local/lib/libgobject-2.0.so.0
#33 0x2918fbea in gtk_button_released ()
   from /usr/local/lib/libgtk-x11-2.0.so.0
#34 0x2918fc11 in gtk_button_released ()
   from /usr/local/lib/libgtk-x11-2.0.so.0
#35 0x28b44a9b in Gtk::Widget_Class::button_release_event_callback ()
   from /usr/local/lib/libgtkmm-2.4.so.1
...

Inkscape 0.47 r22583, built Mar 23 2010
operating system: FreeBSD 8.0-STABLE i386

env LC_CTYPE=de_DE.ISO8859-1

[su_v (suv-lp)]

crash not reproduced with Inkscape 0.47 r22583 and 0.47+devel r9225 on OS X 10.5.8

tested with each of these settings:
 LANG="C"
 LANG="en_US.UTF-8"
 LANG="de_DE.ISO8859-1"

I do however see the same warnings in the console:
** (inkscape-bin:40585): WARNING **: Called helperfns_read_number with value==null_ptr, this can lead to unexpected behaviour.

[Jon A. Cruz (jon-joncruz)]

There was a definite problem with how the font code was parsing number values. Now corrected in revision 9259.