--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/gcc.dg/format/ms_c94-scanf-1.c	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,18 @@
+/* Test for scanf formats.  Changes in C94 to C90.  */
+/* Origin: Joseph Myers <jsm28@cam.ac.uk> */
+/* { dg-do compile { target { *-*-mingw* } } } */
+/* { dg-options "-std=iso9899:199409 -pedantic -Wformat" } */
+
+#define USE_SYSTEM_FORMATS
+#include "format.h"
+
+void
+foo (wchar_t *ls)
+{
+  /* See ISO/IEC 9899:1990 (E) subclause 7.9.6.2 (pages 134-138),
+     as amended by ISO/IEC 9899:1990/Amd.1:1995 (E) (pages 5-6).
+     We do not repeat here all the C90 format checks, but just verify
+     that %ls, %lc, %l[] are accepted without warning.
+  */
+  scanf ("%lc%ls%l[abc]", ls, ls, ls);
+}