Attached is a debdiff for gnome-calculator (Xenial) that prevents a
segfault when elements of division to zero have null assigned tokens.
** Changed in: gnome-calculator (Ubuntu Xenial)
Assignee: (unassigned) => Martin Wimpress (flexiondotorg)
** Changed in: gnome-calculator (Ubuntu Xenial)
Status: New => In Progress
** Patch added: "gc-fix-segfault-xenial.diff"
https://bugs.launchpad.net/ubuntu/+source/gnome-calculator/+bug/1622379/+attachment/4751803/+files/gc-fix-segfault-xenial.diff
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https://bugs.launchpad.net/bugs/1622379
Title:
SRU: sin(0)/sin(0) crash the the calculator
Status in GNOME Calculator:
Fix Released
Status in gnome-calculator package in Ubuntu:
Fix Released
Status in gnome-calculator source package in Xenial:
In Progress
Bug description:
[Impact]
It is possible to cause gnome-calcualtor segfault when elements of
division to zero have null assigned tokens. For example, the following
calculation will trigger a segfault:
sin(0)/sin(0)
[Test Case]
Open a terminal with CTRL+ALT+t and launch 'gnome-calculator'. Type
the following into the equation entry area 'sin(0)/sin(0)' and press
enter, gnome-calculator will segfault.
When the patched 'gnome-calculator' package is installed performing
the same calculation described above will not cause 'gnome-calculator'
to crash and instead the following will be displayed: Division by zero
is undefined
[Regression Potential]
None expected. The applied patch is taken directly from the following
upstream commit:
* https://git.gnome.org/browse/gnome-
calculator/commit/?id=647eb687821fd74764a55767bf1e34f68f5df940
gnome-calculator packages have been built in a PPA and tested.
[Other Info]
dw3@linux:~$ gnome-calculator
(gnome-calculator:29011): GLib-CRITICAL **: g_str_has_prefix:
assertion 'str != NULL' failed
(gnome-calculator:29011): GLib-CRITICAL **: g_str_has_prefix: assertion 'str
!= NULL' failed
Segmentation fault (core dumped)
dw3@linux:~$
sin(0)/sin(0) = NaN, but it crash the calculator
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