tests/cut/cut-huge-range.sh

   1 #!/bin/sh
   2 # Ensure that cut does not allocate mem for large ranges
   3
   4 # Copyright (C) 2012-2024 Free Software Foundation, Inc.
   5
   6 # This program is free software: you can redistribute it and/or modify
   7 # it under the terms of the GNU General Public License as published by
   8 # the Free Software Foundation, either version 3 of the License, or
   9 # (at your option) any later version.
  10
  11 # This program is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 # GNU General Public License for more details.
  15
  16 # You should have received a copy of the GNU General Public License
  17 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
  18
  19 . "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
  20 print_ver_ cut
  21 getlimits_
  22
  23 vm=$(get_min_ulimit_v_ returns_ 0 cut -b1 /dev/null) \
  24   || skip_ 'shell lacks ulimit, or ASAN enabled'
  25
  26 # Ensure we can cut up to our sentinel value.
  27 # Don't use expr to subtract one,
  28 # since UINTMAX_MAX may exceed its maximum value.
  29 CUT_MAX=$(expr $UINTMAX_MAX - 1) || framework_failure_
  30
  31 # From coreutils-8.10 through 8.20, this would make cut try to allocate
  32 # a 256MiB bit vector.
  33 (ulimit -v $vm && cut -b$CUT_MAX- /dev/null > err 2>&1) || fail=1
  34
  35 # Up to and including coreutils-8.21, cut would allocate possibly needed
  36 # memory upfront.  Subsequently extra memory is no longer needed.
  37 (ulimit -v $vm && cut -b1-$CUT_MAX /dev/null >> err 2>&1) || fail=1
  38
  39 # Explicitly disallow values above CUT_MAX
  40 (ulimit -v $vm && returns_ 1 cut -b$UINTMAX_MAX /dev/null 2>/dev/null) ||
  41   fail=1
  42 (ulimit -v $vm && returns_ 1 cut -b$UINTMAX_OFLOW /dev/null 2>/dev/null) ||
  43   fail=1
  44
  45 compare /dev/null err || fail=1
  46
  47 Exit $fail