diff --git a/ap/libc/glibc/glibc-2.23/stdio-common/scanf12.c b/ap/libc/glibc/glibc-2.23/stdio-common/scanf12.c
new file mode 100644
index 0000000..db37e2f
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/stdio-common/scanf12.c
@@ -0,0 +1,23 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+int
+main (void)
+{
+  double d;
+  int c;
+
+  if (scanf ("%lg", &d) != 0)
+    {
+      printf ("scanf didn't failed\n");
+      exit (1);
+    }
+  c = getchar ();
+  if (c != ' ')
+    {
+      printf ("c is `%c', not ` '\n", c);
+      exit (1);
+    }
+
+  return 0;
+}