1 files changed, 7 insertions, 0 deletions

diff --git a/usr.sbin/mergemaster/mergemaster.sh b/usr.sbin/mergemaster/mergemaster.sh
index e73bf0d99194..e21d466fc9e8 100755
--- a/usr.sbin/mergemaster/mergemaster.sh
+++ b/usr.sbin/mergemaster/mergemaster.sh
@@ -838,6 +838,13 @@ mm_install () {
   return $?
 }
 
+if [ ! -d "${TEMPROOT}" ]; then
+	echo "*** FATAL ERROR: The temproot directory (${TEMPROOT})"
+	echo '                 has disappeared!'
+	echo ''
+	exit 1
+fi
+
 echo ''
 echo "*** Beginning comparison"
 echo ''