ash: fix var_leak.tests so that it actually catches the NOFORK bug
+ document the bug better
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/shell/ash_test/ash-vars/var_leak.right b/shell/ash_test/ash-vars/var_leak.right
index be78112..01a5e32 100644
--- a/shell/ash_test/ash-vars/var_leak.right
+++ b/shell/ash_test/ash-vars/var_leak.right
@@ -1,3 +1,4 @@
should be empty: ''
+should be empty: ''
should be not empty: 'val2'
should be not empty: 'val3'
diff --git a/shell/ash_test/ash-vars/var_leak.tests b/shell/ash_test/ash-vars/var_leak.tests
index 0320592..5242e24 100755
--- a/shell/ash_test/ash-vars/var_leak.tests
+++ b/shell/ash_test/ash-vars/var_leak.tests
@@ -1,6 +1,11 @@
-# true is a regular builtin, varibale should not leak out of it
+# cat is an external program, variable should not leak out of it.
# this currently fails with CONFIG_FEATURE_SH_NOFORK=y
VAR=''
+VAR=val0 cat /dev/null
+echo "should be empty: '$VAR'"
+
+# true is a regular builtin, variable should not leak out of it.
+VAR=''
VAR=val1 true
echo "should be empty: '$VAR'"