From 9077fcc3a4670abf2376c21db10dbd8259fb4eab Mon Sep 17 00:00:00 2001
From: Martijn Dekker <martijn@inlv.org>
Date: Tue, 1 Sep 2020 15:43:54 +0100
Subject: [PATCH] shtests: refuse to run if no /dev/tty (re: 14632361)

---
 src/cmd/ksh93/tests/shtests | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/cmd/ksh93/tests/shtests b/src/cmd/ksh93/tests/shtests
index 3fa9dbfae..61d44c758 100755
--- a/src/cmd/ksh93/tests/shtests
+++ b/src/cmd/ksh93/tests/shtests
@@ -166,6 +166,12 @@ function valxml
 	return $errors
 }
 
+if	[[ ! -c /dev/tty || ! -w /dev/tty ]]
+then	print "The regression tests require a functioning /dev/tty." >&2
+	print "If not available, try script(1) to simulate a tty." >&2
+	exit 128
+fi
+
 command set +o posix 2>/dev/null
 unset DISPLAY FIGNORE HISTFILE POSIXLY_CORRECT _AST_FEATURES
 export ENV=/./dev/null