diff --git a/mingw-w64-crt/testcases/tstmain_sys_xxx.c b/mingw-w64-crt/testcases/tstmain_sys_xxx.c
new file mode 100755
index 0000000..e33408a
--- /dev/null
+++ b/mingw-w64-crt/testcases/tstmain_sys_xxx.c
@@ -0,0 +1,16 @@
+/**
+ * This file has no copyright assigned and is placed in the Public Domain.
+ * This file is part of the w64 mingw-runtime package.
+ * No warranty is given; refer to the file DISCLAIMER within this package.
+ */
+#include <stdio.h>
+
+_CRTIMP char *_sys_errlist[];
+
+int main(int argc, char **argv)
+{
+  char **s = (char **) _sys_errlist;
+  if (s) printf ("Msg 0: %s\n", s[0]);
+  else printf ("Error list empty.\n");
+  return 0;
+}