Bug#742840: Crashes when typing numbers using a "."

[Michael Biebl]

Package: gnome-calculator
Version: 3.12.0-1
Severity: grave

I'm using the German locale. I've tried to enter a real number using "."
instead of of ",". This immediately caused a segfault.

To reproduce, run the following
LANG=de_DE.UTF-8 gnome-calculator
then try to enter 3.14. This results in

(gnome-calculator:22429): Gtk-WARNING **: Invalid text buffer iterator:
either the iterator is uninitialized, or the characters/pixbufs/widgets
in the buffer have been modified since the iterator was created.
You must use marks, character numbers, or line numbers to preserve a
position across buffer modifications.
You can apply tags and insert marks without invalidating your iterators,
but any mutation that affects 'indexable' buffer contents (contents that
can be referred to by character offset)
will invalidate all outstanding iterators

(gnome-calculator:22429): Gtk-WARNING **: Invalid text buffer iterator:
either the iterator is uninitialized, or the characters/pixbufs/widgets
in the buffer have been modified since the iterator was created.
You must use marks, character numbers, or line numbers to preserve a
position across buffer modifications.
You can apply tags and insert marks without invalidating your iterators,
but any mutation that affects 'indexable' buffer contents (contents that
can be referred to by character offset)
will invalidate all outstanding iterators

(gnome-calculator:22429): Gtk-CRITICAL **: gtk_text_buffer_set_mark:
assertion 'gtk_text_iter_get_buffer (iter) == buffer' failed

(gnome-calculator:22429): GtkSourceView-WARNING **: Completion context
without mark
Segmentation fault



-- System Information:
Debian Release: jessie/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (200, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 3.13-1-amd64 (SMP w/4 CPU cores)
Locale: LANG=de_DE.utf8, LC_CTYPE=de_DE.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages gnome-calculator depends on:
ii  dconf-gsettings-backend [gsettings-backend]  0.18.0-1
ii  libatk1.0-0                                  2.10.0-2
ii  libc6                                        2.18-4
ii  libglib2.0-0                                 2.38.2-5
ii  libgtk-3-0                                   3.10.7-1
ii  libgtksourceview-3.0-1                       3.10.2-1
ii  libpango-1.0-0                               1.36.3-1
ii  libxml2                                      2.9.1+dfsg1-3

Versions of packages gnome-calculator recommends:
ii  gnome-icon-theme  3.12.0-1
ii  gvfs              1.20.0-1
ii  yelp              3.10.1-1

gnome-calculator suggests no packages.

-- no debconf information