https://bugs.kde.org/show_bug.cgi?id=467394
b...@mogwai.be changed:
What |Removed |Added
----------------------------------------------------------------------------
Ever confirmed|0 |1
Status|REPORTED |CONFIRMED
--- Comment #6 from b...@mogwai.be ---
Thanks for reporting and thanks for the extensive debug info.
I think I know what's happening. In principle Kasts will indicate that you've
input an invalid url that doesn't point to an RSS feed without crashing.
However, I see that you've run into a corner case. I think you must've
accidentally input an empty string (or at least containing only spaces).
In the code Kasts will proceed to make a temporary entry in the database for
the URL you have input. However, what seems to happen in this special case is
that sqlite will interpret that empty string (or only spaces) as NULL. Then in
a next step Kasts will try to do create a 'feed' object based on the entry in
the DB, but it's not able to retrieve the entry since NULL is not equal to the
empty string "" that Kasts is looking for. Therefore no object is created and
Kasts will run into a nullptr dereference because it is assuming that the
object exists.
I think I have enough information to implement proper safeguards in the next
version.
Unfortunately, this also means that your DB has this NULL entry which is
causing it to hang on startup. If you don't mind losing current data (or if
you have the data backed up through gpodder sync), then you can remove the
database file located at "~/.local/share/KDE/kasts/database.db3".
If you still want to keep your data, you can use a tool like "sqlitebrowser" to
open that database file and then go to the "browse data" tab, select the
"Feeds" table and then remove the NULL entry, which should probably be the last
entry (right click -> remove record). Don't forget to save the database before
closing.
I hope this helps.
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