+internal_warning (const char *format, ...)
+#else
+internal_warning (format, va_alist)
+ const char *format;
+ va_dcl
+#endif
+{
+ va_list args;
+
+ fprintf (stderr, "%s: warning: ", get_name_for_error ());
+
+#if defined (PREFER_STDARG)
+ va_start (args, format);
+#else
+ va_start (args);
+#endif
+
+ vfprintf (stderr, format, args);
+ fprintf (stderr, "\n");
+
+ va_end (args);
+}
+
+void
+#if defined (PREFER_STDARG)