1 files changed, 16 insertions, 0 deletions
diff --git a/src/tests/userprog/read-bad-ptr.c b/src/tests/userprog/read-bad-ptr.c
new file mode 100644
index 0000000..8fe756e
--- /dev/null
+++ b/src/tests/userprog/read-bad-ptr.c
@@ -0,0 +1,16 @@
+/* Passes an invalid pointer to the read system call.
+   The process must be terminated with -1 exit code. */
+
+#include <syscall.h>
+#include "tests/lib.h"
+#include "tests/main.h"
+
+void
+test_main (void) 
+{
+  int handle;
+  CHECK ((handle = open ("sample.txt")) > 1, "open \"sample.txt\"");
+
+  read (handle, (char *) 0xc0100000, 123);
+  fail ("should not have survived read()");
+}