How to disable automatic core dumps in Debian 9?

[Martin T <m4rtntns@gmail.com>]

Hi,

how to disable all automatic core dumps upon the process termination
in Debian 9? As Debian does not seem to use systemd-coredump, then I
set the "kernel.core_pattern=|/bin/false" kernel configuration in
sysctl.conf and following pam_limits.so module configuration:

$ grep -w core /etc/security/limits.conf
#        - core - limits the core file size (KB)
*               hard    core            0
root            hard    core            0
#root            hard    core            100000
$

When I execute a program, which crashes, then while the "core dumped"
is printed:

$ ./testprogram
Floating point exception (core dumped)
$

..then no actual core dump does not seem to be created.

Is the configuration above enough to disable core dumps or am I
missing something?

thanks,
Martin