Bug 454130

Summary:	Typing = after certain phrases crashes krunner
Product:	[Plasma] krunner	Reporter:	afedotov861
Component:	calculator	Assignee:	Alexander Lohnau <alexander.lohnau>
Status:	REPORTED ---
Severity:	crash	CC:	nate, plasma-bugs
Priority:	NOR
Version:	5.24.5
Target Milestone:	---
Platform:	Arch Linux
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:
Attachments:	calculator runner gibberish

Description afedotov861 2022-05-21 06:51:09 UTC

SUMMARY
When typing certain strings into krunner, followed by an equals sign, krunner closes unexpectedly, which i'm suspecting is it crashing. I have had this happen so far with these strings:
SAL_USE_VCLPLUGIN=
libreoffice=
(libreoffice being installed, meaning some populated search results. On the other hand, SAL_USE_VCLPLUGIN returned no search results before i append = to kill krunner, so i'm not sure how significant this is.)
I am certain this is the fault of the calculator component, because when i disable it in krunner settings, the behavior does not happen anymore.
I am suspecting that this is indeed crashing krunner, because on its next activation it is exhibiting the behavior of sliding upwards to the edge of the screen on its first activation as described in another bug (https://bugs.kde.org/show_bug.cgi?id=447096)

SOFTWARE/OS VERSIONS
KDE Plasma Version: 5.24.5
KDE Frameworks Version: 5.94.0
Qt Version: 5.15.4

Comment 1 Alexander Lohnau 2022-05-21 07:02:31 UTC

Please attach a stacktrace and say which distro you yre running.

Comment 2 Alexander Lohnau 2022-05-21 07:03:22 UTC

If you don't have a DrKonqui notification, you can run "krunner --replace" on the terminal and see if there is any crash.

Comment 3 afedotov861 2022-05-21 07:16:38 UTC

Unfortunately, I am using Arch Linux, which makes it hard for me to generate a useful trace as it does not sanely distribute debug symbols. I did run krunner --replace inside a terminal, here is what i got: https://pastebin.com/VgYbywmb
The crash happened on Line 8 and below, I just decided to include everything it wrote out for completeness. Meanwhile I will try to figure out how they want me to use debuginfod...

Comment 4 afedotov861 2022-05-21 07:18:28 UTC

Oh, and DrKonqui never showed when I crashed krunner after opening it from keyboard shortcut, and it only sometimes showed from krunner launched in a terminal by krunner --replace

Comment 5 Alexander Lohnau 2022-05-21 07:28:22 UTC

Thanks for the info! Does disabling the calculator runner fix the issue?

There is another bug report about the calculator runner crashing, but I was not able to reproduce it with KDE Neon packages, qalculate master or the qaclculate version the bugreporter uses.

Comment 6 afedotov861 2022-05-21 07:33:20 UTC

Yes, disabling the calculator component of krunner does fix this issue. I figure it's trying to calculate on something invalid when = is typed. As in, parsing things it shouldn't be parsing. I'll soon attach a picture of something that supports my theory, although this time it doesn't crash but instead spits out gibberish.

Comment 7 afedotov861 2022-05-21 07:36:16 UTC

Created attachment 149055 [details]
calculator runner gibberish

Here, I've attached it

Comment 8 Alexander Lohnau 2022-05-21 07:43:28 UTC

Interesting, on the qalc CLI I get

>> GNUPGHOME=
>  error: "U" is not a valid variable/function/unit.
>  error: "OME" is not a valid variable/function/unit.
>  giganewton × (0 × poise) × gigahenry = 0 g²/(F·s)

Could you please file a separate bug report for the gibberish results?