Where are the coredumps generated?
$ cat /proc/sys/kernel/core_pattern
/tmp/core-%e.%p.%h.%t
Before running your executable, set the limit for the coredump:
$ ulimit -c unlimited
You can add ulimit -n 99999 in your ~/.bashrc. But if you want all gui apps(qtcreator) to use it, you should also include it in your ~/.xsession:
#!/bin/bash
ulimit -n 99999
You mai also need to update the limits(only if setting the limit returns error):
sudo nano /etc/security/limits.conf
* hard nofile 99999
# --------------------
sudo nano /etc/pam.d/common-session
session required pam_limits.so