groff/contrib/mm/tests/short-pages-do-not-overflow-stack.sh
2025-12-17 16:56:49 -06:00

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#!/bin/sh
#
# Copyright 2022-2025 G. Branden Robinson
#
# This file is part of groff, the GNU roff typesetting system.
#
# groff is free software; you can redistribute it and/or modify it under
# the terms of the GNU General Public License as published by the Free
# Software Foundation, either version 3 of the License, or (at your
# option) any later version.
#
# groff is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
# for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
groff="${abs_top_builddir:-.}/test-groff"
fail=
wail () {
echo FAILED >&2
fail=YES
}
# Regression-test Savannah #24048. Pages that are too short to
# accommodate minimal header and footer requirements should not cause
# infinite trap recursion.
input='.COVER
.TL
Title
.AU "R. Thurston Howell"
.AT "Professor of Agnotology" "Publisher, Posterior Analytics Weekly"
.COVEND
.P
Main matter goes here.'
echo "checking that sample document fits using default length" >&2
output=$(printf "%s\n" "$input" \
| "$groff" -b -mm -Tascii -P-cbou | nl -ba)
echo "$output"
test "$(echo "$output" | wc -l)" -eq 132 || wail # 66 lines * 2 pages
echo "checking that sample document fits using -rL5v" >&2
output=$(printf "%s\n" "$input" \
| "$groff" -b -rL6v -mm -Tascii -P-cbou | nl -ba)
echo "$output"
test "$(echo "$output" | wc -l)" -eq 48 || wail # 6 lines * 8 pages
echo "checking that sample document fails gracefully using -rL5v" >&2
error=$(printf "%s\n" "$input" \
| "$groff" -b -rL5v -mm -Tascii -P-cbou -z 2>&1)
# Assume that >= 10 lines of stderr must be due to a giant backtrace.
test $(echo "$error" | wc -l) -lt 10 || wail
test -z "$fail"
# vim:set autoindent expandtab shiftwidth=4 tabstop=4 textwidth=72: