[bug #64488] [pic] troff.cpp: '%s' directive argument is null [-Wformat-overflow=]

[G. Branden Robinson]

Update of bug #64488 (project groff):

                  Status:             In Progress => Fixed                  
             Open/Closed:                    Open => Closed                 
         Planned Release:                    None => 1.24.0                 

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Follow-up Comment #1:


commit 705be31107334c00f7d963cca5f9e896b91b1022
Author: G. Branden Robinson <g.branden.robinson@gmail.com>
Date:   Sat Jul 29 05:25:03 2023 -0500

    [pic]: Fix Savannah #64488 (`lf` request usage).
    
    * src/preproc/pic/troff.cpp (troff_output::set_location): Do more
      parameter validation.  Don't generate the two-argument form of the
      `lf` request if the C string holding the new file name to write isn't
      a null pointer.  Also `assert()` this since it should be an invariant.
    
    Fixes <https://savannah.gnu.org/bugs/?64488>.  Thanks to Bjarni Ingi
    Gislason for the report.




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