#!/bin/sh
# Ensure that unexpand uses bounded memory.

# Copyright (C) 2025-2026 Free Software Foundation, Inc.

# This program 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.

# This program 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 <https://www.gnu.org/licenses/>.

. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
print_ver_ unexpand

vm=$(get_min_ulimit_v_ unexpand /dev/null) ||
  skip_ 'failed to determine memory limit'

timeout 0.5 $SHELL -c \
  "(ulimit -v $(($vm+6000)) \
    && unexpand </dev/zero >/dev/null 2>err)"
ret=$?
test -f err || skip_ 'shell ulimit failure'
test $ret = 124 || {
  fail=1
  cat err
  echo "unexpand used too much memory" >&2
}

Exit $fail