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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 17:39:29 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 17:39:29 +0000
commit8ffec2a3aba6f114784e11f89ef1d57a096ae540 (patch)
treeccebcbad06203e8241a8e7249f8e6c478a3682ea /tests/tail-2/big-4gb.sh
parentInitial commit. (diff)
downloadcoreutils-upstream.tar.xz
coreutils-upstream.zip
Adding upstream version 8.32.upstream/8.32upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tests/tail-2/big-4gb.sh')
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diff --git a/tests/tail-2/big-4gb.sh b/tests/tail-2/big-4gb.sh
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+#!/bin/sh
+# Demonstrate a bug in 'tail -cN' when operating on files of size 4G and larger
+# Fixed in coreutils-4.5.2.
+
+# Copyright (C) 2002-2020 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/>.
+
+. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
+print_ver_ tail
+expensive_
+
+# Create a file of size exactly 4GB (2^32) with 8 bytes
+# at the beginning and another set of 8 bytes at the end.
+# The rest will be NUL bytes. On most modern systems, the following
+# creates a file that takes up only a few KB. Here, du -sh says 16K.
+echo abcdefgh | tr -d '\n' > big || framework_failure_
+echo 87654321 | tr -d '\n' > tmp || framework_failure_
+# Seek 4GB - 8
+dd bs=1 seek=4294967288 if=tmp of=big 2> err || dd_failed=1
+if test "$dd_failed" = 1; then
+ cat err 1>&2
+ skip_ \
+'cannot create a file large enough for this test,
+possibly because this system does not support large files;
+Consider rerunning this test on a different file system.'
+fi
+
+
+tail -c1 big > out || fail=1
+# Append a newline.
+echo >> out
+cat <<\EOF > exp
+1
+EOF
+
+compare exp out || fail=1
+
+Exit $fail