[Bug 258179] security/sshguard: Stack Overflow on i386 (stable/13) on startup. sshg-blocker dumps core.

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=258179

            Bug ID: 258179
           Summary: security/sshguard: Stack Overflow on i386 (stable/13)
                    on startup. sshg-blocker dumps core.
           Product: Ports & Packages
           Version: Latest
          Hardware: i386
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: Individual Port(s)
          Assignee: ports-bugs@FreeBSD.org
          Reporter: john@jmarshall.id.au
                CC: kevinz5000@gmail.com
                CC: kevinz5000@gmail.com
             Flags: maintainer-feedback?(kevinz5000@gmail.com)

security/sshguard 2.4.2
FreeBSD i386 stable/13 (last week)

sshg-blocker dumps core on startup.

auth.log shows:
  sshguard[86952]: stack overflow detected; terminated

Runs happily on amd64 with stable/13 from the same day.

I don't have lldb on the i386 system because it won't build [see bug 257954]
and don't know how to drive it; but got this when I copied the core file to the
amd64 system:

$ lldb -a i386 -c /tmp/sshg-blocker.core
(lldb) target create --core "/tmp/sshg-blocker.core"
Core file '/tmp/sshg-blocker.core' (i386) was loaded.

(lldb) bt all
* thread #1, name = 'sshg-blocker', stop reason = signal SIGABRT
  * frame #0: 0x20586c8f
    frame #1: 0x205886e0
  thread #2, name = 'sshg-blocker', stop reason = signal SIGABRT
    frame #0: 0x2058839f
    frame #1: 0x2046231e
(lldb)

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