provided code

src/tests/userprog/read-bad-ptr.ck

@@ -0,0 +1,15 @@
+# -*- perl -*-
+use strict;
+use warnings;
+use tests::tests;
+check_expected ([<<'EOF', <<'EOF']);
+(read-bad-ptr) begin
+(read-bad-ptr) open "sample.txt"
+(read-bad-ptr) end
+read-bad-ptr: exit(0)
+EOF
+(read-bad-ptr) begin
+(read-bad-ptr) open "sample.txt"
+read-bad-ptr: exit(-1)
+EOF
+pass;