1 files changed, 14 insertions, 0 deletions
diff --git a/src/tests/userprog/write-stdin.c b/src/tests/userprog/write-stdin.c
new file mode 100644
index 0000000..491ea53
--- /dev/null
+++ b/src/tests/userprog/write-stdin.c
@@ -0,0 +1,14 @@
+/* Try writing to fd 0 (stdin), 
+   which may just fail or terminate the process with -1 exit
+   code. */
+
+#include <syscall.h>
+#include "tests/lib.h"
+#include "tests/main.h"
+
+void
+test_main (void) 
+{
+  char buf = 123;
+  write (0, &buf, 1);
+}