reverted back to previous version => http://curl.haxx.se/mail/lib-2007-03/0258.html

lib/sendf.c

@@ -224,10 +224,6 @@ static size_t convert_lineends(struct SessionHandle *data,
 
 void Curl_infof(struct SessionHandle *data, const char *fmt, ...)
 {
-#ifdef CURL_DISABLE_VERBOSE_STRINGS
-  (void)data;
-  (void)fmt;
-#else
   if(data && data->set.verbose) {
     va_list ap;
     size_t len;
@@ -238,7 +234,6 @@ void Curl_infof(struct SessionHandle *data, const char *fmt, ...)
     len = strlen(print_buffer);
     Curl_debug(data, CURLINFO_TEXT, print_buffer, len, NULL);
   }
-#endif
 }
 
 /* Curl_failf() is for messages stating why we failed.

lib/sendf.h

@@ -28,7 +28,19 @@ CURLcode Curl_sendf(curl_socket_t sockfd, struct connectdata *,
 void Curl_infof(struct SessionHandle *, const char *fmt, ...);
 void Curl_failf(struct SessionHandle *, const char *fmt, ...);
 
+#if defined(CURL_DISABLE_VERBOSE_STRINGS)
+#if defined(__GNUC__)
+/* This style of variable argument macros is a gcc extension */
+#define infof(x...) /*ignore*/
+#else
+/* C99 compilers could use this if we could detect them */
+/*#define infof(...) */
+/* Cast the args to void to make them a noop, side effects notwithstanding */
+#define infof (void)
+#endif
+#else
 #define infof Curl_infof
+#endif
 #define failf Curl_failf
 
 #define CLIENTWRITE_BODY   1