diff --git a/ap/libc/glibc/glibc-2.23/stdio-common/scanf9.c b/ap/libc/glibc/glibc-2.23/stdio-common/scanf9.c
new file mode 100644
index 0000000..7aca354
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/stdio-common/scanf9.c
@@ -0,0 +1,30 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+int
+main (void)
+{
+  int matches;
+  char str[10];
+
+  str[0] = '\0';
+  matches = -9;
+  matches = sscanf ("x ]", "%[^] ]", str);
+  printf ("Matches = %d, string str = \"%s\".\n", matches, str);
+  printf ("str should be \"x\".\n");
+
+  if (strcmp (str, "x"))
+    abort ();
+
+  str[0] = '\0';
+  matches = -9;
+  matches = sscanf (" ] x", "%[] ]", str);
+  printf ("Matches = %d, string str = \"%s\".\n", matches, str);
+  printf ("str should be \" ] \".\n");
+
+  if (strcmp (str, " ] "))
+    abort ();
+
+  return 0;
+}