1 files changed, 11 insertions, 0 deletions

diff --git a/tests/userprog/close-bad-fd.c b/tests/userprog/close-bad-fd.c
new file mode 100644
index 0000000..f63bb9a
--- /dev/null
+++ b/tests/userprog/close-bad-fd.c
@@ -0,0 +1,11 @@
+/* Tries to close an invalid fd, which must either fail silently
+   or terminate with exit code -1. */
+
+#include <syscall.h>
+#include "tests/main.h"
+
+void
+test_main (void) 
+{
+  close (0x20101234);
+}