+#ifdef HAVE_VASPRINTF
+ va_start( argp, fmt );
+ if (vasprintf( &str, fmt, argp ) == -1){
+ va_end(argp);
+ rrd_set_error ("vasprintf failed.");
+ return(NULL);
+ }
+#else
+ int maxlen = 1024 + strlen(fmt);
+ str = (char*)malloc(sizeof(char) * (maxlen + 1));