[1]    21283 bus error  keepassx

Ubuntu 18.04.1 LTS

# gdb /usr/local/bin/keepassx
GNU gdb (Ubuntu 8.1-0ubuntu3) 8.1.0.20180409-git
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
...
(gdb) run
Starting program: /usr/local/bin/keepassx
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Cannot find user-level thread for LWP 21325: generic error
(gdb) quit
A debugging session is active.

    Inferior 1 [process 21325] will be killed.

Quit anyway? (y or n) y

apt-cache depends keepassx | grep '[ |]Depends: [^<]' | cut -d: -f2 | tr -d ' ' | xargs sudo apt-get --reinstall install -y