[bug #63214] [eqn] reads from uninitialized memory when reporting file name in diagnostics

[G. Branden Robinson]

URL:
  <https://savannah.gnu.org/bugs/?63214>

                 Summary: [eqn] reads from uninitialized memory when reporting
file name in diagnostics
                 Project: GNU troff
               Submitter: gbranden
               Submitted: Fri 14 Oct 2022 06:37:15 PM UTC
                Category: Preprocessor eqn
                Severity: 3 - Normal
              Item Group: Incorrect behaviour
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any
         Planned Release: None


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Follow-up Comments:


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Date: Fri 14 Oct 2022 06:37:15 PM UTC By: G. Branden Robinson <gbranden>
Affects groff 1.22.4.

Does not reliably reproduce when reading from stdin.


$ eqn EXPERIMENTS/hosed-eqn.roff >/dev/null
eqn:�k)"�U:16: end of input while defining macro


My guess is this affects _any_ _eqn_ diagnostic, but I haven't confirmed that
yet.







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