1 files changed, 41 insertions, 0 deletions
diff --git a/tests/mv/hard-4.sh b/tests/mv/hard-4.sh
new file mode 100755
index 0000000..9296ef5
--- /dev/null
+++ b/tests/mv/hard-4.sh
@@ -0,0 +1,41 @@
+#!/bin/sh
+# ensure that mv maintains a in this case: touch a; ln a b; mv a b
+
+# Copyright (C) 2003-2020 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_ mv
+touch a || framework_failure_
+ln a b || framework_failure_
+
+# Between coreutils-5.0 and coreutils-8.24, 'a' would be removed.
+# Before coreutils-5.0.1 the issue would not have been diagnosed.
+# We don't emulate the rename(a,b) with unlink(a) as that would
+# introduce races with overlapping mv instances removing both links.
+mv a b 2>err && fail=1
+printf "mv: 'a' and 'b' are the same file\n" > exp
+compare exp err || fail=1
+
+test -r a || fail=1
+test -r b || fail=1
+
+# Make sure it works with --backup.
+mv --backup=simple a b || fail=1
+test -r a && fail=1
+test -r b || fail=1
+test -r b~ || fail=1
+
+Exit $fail