commit b20083a930f766939f47dddc66d089c9fee5d38a
Author: Ruediger Oertel <ro@suse.de>
Date:   Thu Oct 10 15:28:04 2019 +0200

    check if variables can be set before modifying them
    to avoid warnings on login with a restricted shell
    (bsc#1138869)

diff --git a/files/etc/bash.bashrc b/files/etc/bash.bashrc
index 85be9f6..36f7db5 100644
--- a/files/etc/bash.bashrc
+++ b/files/etc/bash.bashrc
@@ -8,9 +8,14 @@
 
 #
 # Check which shell is reading this file
-#
-noprofile=false
-restricted=false
+# check if variables are read-only before setting them
+# for example in a restricted shell
+if unset noprofile 2>/dev/null ; then
+  noprofile=false
+fi
+if unset restricted 2>/dev/null ; then
+  restricted=false
+fi
 : ${_is_save:=unset}
 if test -z "$is" ; then
  if test -f /proc/mounts ; then