1 files changed, 57 insertions, 0 deletions
diff --git a/tests/misc/stty-invalid.sh b/tests/misc/stty-invalid.sh
new file mode 100755
index 0000000..71fda77
--- /dev/null
+++ b/tests/misc/stty-invalid.sh
@@ -0,0 +1,57 @@
+#!/bin/sh
+# Ensure that stty diagnoses invalid inputs, rather than silently misbehaving.
+
+# Copyright (C) 2007-2020 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/>.
+
+. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
+print_ver_ stty
+require_controlling_input_terminal_
+require_trap_signame_
+
+trap '' TTOU # Ignore SIGTTOU
+
+
+saved_state=$(stty -g) || fail=1
+stty $saved_state || fail=1
+
+# Before coreutils-6.9.90, if stty were given an argument with 35 colons
+# separating 36 hexadecimal strings, stty would fail to diagnose as invalid
+# any number that was out of range as long as sscanf happened to
+# overflow/wrap it back into the range of the corresponding type (either
+# tcflag_t or cc_t).
+
+# For each of the following, with coreutils-6.9 and earlier,
+# stty would fail to diagnose the error on at least Solaris 10.
+hex_2_64=10000000000000000
+returns_ 1 stty $(echo $saved_state |sed 's/^[^:]*:/'$hex_2_64:/) \
+  2>/dev/null || fail=1
+returns_ 1 stty $(echo $saved_state |sed 's/:[0-9a-f]*$/:'$hex_2_64/) \
+  2>/dev/null || fail=1
+
+# From coreutils 5.3.0 to 8.28, the following would crash
+# due to incorrect argument handling.
+if tty -s </dev/tty; then
+  returns_ 1 stty eol -F /dev/tty || fail=1
+  returns_ 1 stty -F /dev/tty eol || fail=1
+  returns_ 1 stty -F/dev/tty eol || fail=1
+  returns_ 1 stty eol -F/dev/tty eol || fail=1
+fi
+
+# Just in case either of the above mistakenly succeeds (and changes
+# the state of our tty), try to restore the initial state.
+stty $saved_state || fail=1
+
+Exit $fail