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d08381bc26
* src/head.c (elide_tail_bytes_file): Fix typo in lseek invocation. * tests/misc/head-c.sh: Add test for this bug. * NEWS: Document this.
46 lines
1.4 KiB
Bash
Executable File
46 lines
1.4 KiB
Bash
Executable File
#!/bin/sh
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# exercise head -c
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# Copyright (C) 2001-2014 Free Software Foundation, Inc.
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
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print_ver_ head
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require_ulimit_v_
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getlimits_
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# exercise the fix of 2001-08-18, based on test case from Ian Bruce
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echo abc > in || framework_failure_
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(head -c1; head -c1) < in > out || fail=1
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case "$(cat out)" in
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ab) ;;
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*) fail=1 ;;
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esac
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# Test for a bug in coreutils 5.0.1 through 8.22.
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printf 'abc\ndef\n' > in1 || framework_failure_
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(dd bs=1 skip=1 count=0 status=none && head -c-4) < in1 > out1 || fail=1
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case "$(cat out1)" in
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bc) ;;
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*) fail=1 ;;
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esac
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# Only allocate memory as needed.
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# Coreutils <= 8.21 would allocate memory up front
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# based on the value passed to -c
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(ulimit -v 20000; head --bytes=-$SSIZE_MAX < /dev/null) || fail=1
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Exit $fail
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