URL: <https://savannah.gnu.org/bugs/?68794>
Summary: [troff] assertion failure when `evc` request given
invalid identifier
Group: GNU roff
Submitter: gbranden
Submitted: Sun 18 Oct 2026 04:33:58 PM UTC
Category: Formatter
Severity: 4 - Important
Item Group: Crash/Unresponsive
Status: In Progress
Privacy: Public
Assigned to: gbranden
Open/Closed: Open
Discussion Lock: Unlocked
Planned Release: None
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Follow-up Comments:
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Date: Sun 18 Oct 2026 04:33:58 PM UTC By: G. Branden Robinson <gbranden>
$ printf '.evc \002\n' | ~/groff-1.24.2/bin/groff -z
troff:<standard input>:1: error: character code 2 is not allowed in an
identifier
troff: ../src/roff/troff/env.cpp:3784: void environment_copy(): Assertion `nm
!= 0' failed.
/home/branden/groff-1.24.2/bin/groff: error: troff: Aborted (core dumped)
Target for _groff_ 1.25.0.
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