mirror of
git://git.sv.gnu.org/coreutils.git
synced 2026-04-20 02:36:16 +02:00
275c078fb4
Run "make update-copyright", but then also run this, perl -pi -e 's/2\d\d\d-//' tests/sample-test to make that one script use the single most recent year number.
65 lines
2.1 KiB
Bash
Executable File
65 lines
2.1 KiB
Bash
Executable File
#!/bin/sh
|
|
# Ensure that cut does not allocate mem for large ranges
|
|
|
|
# Copyright (C) 2012-2014 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 <http://www.gnu.org/licenses/>.
|
|
|
|
. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
|
|
print_ver_ cut
|
|
require_ulimit_v_
|
|
getlimits_
|
|
|
|
# sed script to subtract one from the input.
|
|
# Each input line should consist of a positive decimal number.
|
|
# Each output line's number is one less than the input's.
|
|
# There's no limit (other than line length) on the number's magnitude.
|
|
subtract_one='
|
|
s/$/@/
|
|
: again
|
|
s/0@/@9/
|
|
s/1@/0/
|
|
s/2@/1/
|
|
s/3@/2/
|
|
s/4@/3/
|
|
s/5@/4/
|
|
s/6@/5/
|
|
s/7@/6/
|
|
s/8@/7/
|
|
s/9@/8/
|
|
t again
|
|
'
|
|
|
|
# Ensure we can cut up to our sentinel value.
|
|
# This is currently SIZE_MAX, but could be raised to UINTMAX_MAX
|
|
# if we didn't allocate memory for each line as a unit.
|
|
# Don't use expr to subtract one, since SIZE_MAX may exceed its maximum value.
|
|
CUT_MAX=$(echo $SIZE_MAX | sed "$subtract_one")
|
|
|
|
# From coreutils-8.10 through 8.20, this would make cut try to allocate
|
|
# a 256MiB bit vector. With a 20MB limit on VM, the following would fail.
|
|
(ulimit -v 20000; : | cut -b$CUT_MAX- > err 2>&1) || fail=1
|
|
|
|
# Up to and including coreutils-8.21, cut would allocate possibly needed
|
|
# memory upfront. Subsequently extra memory is no longer needed.
|
|
(ulimit -v 20000; : | cut -b1-$CUT_MAX >> err 2>&1) || fail=1
|
|
|
|
# Explicitly disallow values above CUT_MAX
|
|
(ulimit -v 20000; : | cut -b$SIZE_MAX 2>/dev/null) && fail=1
|
|
(ulimit -v 20000; : | cut -b$SIZE_OFLOW 2>/dev/null) && fail=1
|
|
|
|
compare /dev/null err || fail=1
|
|
|
|
Exit $fail
|