[bug #68521] [troff] assertion failure in `void charinfo::set_number(int)`: (n >= 0)

"G. Branden Robinson" <[email protected]> Mon, 13 Jul 2026 19:05:34 -0400 (EDT)

Newsgroups	gmane.comp.printing.groff.bugs
Message-ID	<[email protected]>

Update of bug #68521 (group groff):

                  Status:             In Progress => Fixed
             Open/Closed:                    Open => Closed

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Follow-up Comment #1:


commit feb92d80933f13bd639d3d4962c279463e729188
Author: G. Branden Robinson <[email protected]>
Date:   Mon Jul 13 10:32:52 2026 -0500

    [troff]: Fix Savannah #68521.
    
    * src/roff/troff/input.cpp (token::next): Perform range check on
      parameter to `\N` escape sequence; throw error diagnostic if it fails.
    
    Fixes <https://savannah.gnu.org/bugs/?68521>.  Problem introduced by me
    in commit b039f8c3d1, 2025-03-29, an attempt to improve compatibility
    with DWB troff.  (But as noted in that commit, DWB troff appears not to
    _exercise_ its freedom to employ negative character indices.)




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