- Added a macro for curl_easy_setopt() that accepts three arguments and simply

does nothing with them, just to make sure libcurl users always use three
  arguments to this function. Due to its use of ... for the third argument, it
  is otherwise hard to detect abuse.

CHANGES

@@ -6,6 +6,12 @@
 
                                   Changelog
 
+Daniel Stenberg (11 Mar 2008)
+- Added a macro for curl_easy_setopt() that accepts three arguments and simply
+  does nothing with them, just to make sure libcurl users always use three
+  arguments to this function. Due to its use of ... for the third argument, it
+  is otherwise hard to detect abuse.
+
 Michal Marek (11 Mar 2008)
 - Added a type checking macro for curl_easy_setopt(), needs gcc-4.3 and only
   works in C mode atm (http://curl.haxx.se/mail/lib-2008-02/0267.html ,

RELEASE-NOTES

@@ -20,6 +20,7 @@ This release includes the following changes:
  o added a type checking macro for curl_easy_setopt(), watch out for new
    warnings in code using libcurl (needs gcc-4.3 and currently only works
    in C mode)
+ o curl_easy_setopt() uses are now checked to use three arguments
 
 This release includes the following bugfixes:
 

include/curl/curl.h

@@ -1792,8 +1792,16 @@ CURL_EXTERN CURLcode curl_easy_pause(CURL *handle, int bitmask);
 #include "multi.h"
 
 /* the typechecker doesn't work in C++ (yet) */
-#if (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)) && !defined(__cplusplus)
+#if (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)) && \
+    !defined(__cplusplus)
 #include "typecheck-gcc.h"
+#else
+#if defined(__STDC__) && (__STDC__ >= 1) 
+/* This preprocessor magic that replaces a call with the exact same call is
+   only done to make sure application authors use exactly three arguments
+   to this function. */
+#define curl_easy_setopt(handle,opt,param) curl_easy_setopt(handle,opt,param)
+#endif /* __STDC__ >= 1 */
 #endif /* gcc >= 4.3 && !__cplusplus */
 
 #endif /* __CURL_CURL_H */