+#if GNULIB_TEST_WCSSTR
+SIGNATURE_CHECK (GNULIB_NAMESPACE::wcsstr, wchar_t *,
+ (const wchar_t *, const wchar_t *));
+#endif
+
+#if GNULIB_TEST_WCSTOK
+SIGNATURE_CHECK (GNULIB_NAMESPACE::wcstok, wchar_t *,
+ (wchar_t *, const wchar_t *, wchar_t **));
+#endif
+
+#if GNULIB_TEST_WCSWIDTH
+SIGNATURE_CHECK (GNULIB_NAMESPACE::wcswidth, int, (const wchar_t *, size_t));
+#endif
+