1 files changed, 11 insertions, 0 deletions

diff --git a/tests/userprog/close-stdin.c b/tests/userprog/close-stdin.c
new file mode 100644
index 0000000..9bbf9f2
--- /dev/null
+++ b/tests/userprog/close-stdin.c
@@ -0,0 +1,11 @@
+/* Tries to close the keyboard input stream, which must either
+   fail silently or terminate with exit code -1. */
+
+#include <syscall.h>
+#include "tests/main.h"
+
+void
+test_main (void) 
+{
+  close (0);
+}