+/* _INTL_MAY_RETURN_STRING_ARG(n) declares that the given function may return
+ its n-th argument literally. This enables GCC to warn for example about
+ printf (gettext ("foo %y")). */
+#if __GNUC__ >= 3 && !(__APPLE_CC__ > 1 && defined __cplusplus)
+# define _INTL_MAY_RETURN_STRING_ARG(n) __attribute__ ((__format_arg__ (n)))
+#else
+# define _INTL_MAY_RETURN_STRING_ARG(n)
+#endif
+