GNU gdb (Ubuntu 7.7.1-0ubuntu4) 7.7.1
Copyright (C) 2014 Free Software Foundation, Inc.
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Reading symbols from webbrowser-app...(no debugging symbols found)...done.
(gdb) handle SIG33 pass noprint nostop
Signal        Stop	Print	Pass to program	Description
SIG33         No	No	Yes		Real-time event 33
(gdb) set pagination 0
(gdb) run
Starting program: /usr/bin/webbrowser-app 
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
QXcbConnection: Could not connect to display 

Program received signal SIGABRT, Aborted.
0x00007ffff4d8f117 in raise () from /lib/x86_64-linux-gnu/libc.so.6
(gdb)