[Bug 266868] mandoc(1) hangs in endless loop and eats all CPU time

From: <bugzilla-noreply_at_freebsd.org>
Date: Thu, 06 Oct 2022 16:09:50 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=266868

            Bug ID: 266868
           Summary: mandoc(1) hangs in endless loop and eats all CPU time
           Product: Base System
           Version: CURRENT
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: bin
          Assignee: bugs@FreeBSD.org
          Reporter: wosch@FreeBSD.org

mandoc on FreeBSD 14-current cannot render the japanese groff_ms manual page.
It runs in an endless loop, eats all CPU time and never terminates.

How to repeat:

curl -sSf https://people.freebsd.org/~wosch/tmp/mandoc/endless-loop/groff_ms.7
| mandoc

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