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copied!<p>The compiler is likely complaining about the trailing comma when the variadic arguments list is empty. GCC and Visual Studio compilers support the non-standard extension <code>##__VA_ARGS__</code> to suppress the trailing comma:</p> <pre><code>#define FOO(fmt, ...) printf(fmt, ##__VA_ARGS__) </code></pre> <p>The Visual Studio compilers will also suppress the trailing comma even without the <code>##</code> extension.</p> <p>See GCC documentation <a href="http://gcc.gnu.org/onlinedocs/cpp/Variadic-Macros.html" rel="nofollow noreferrer">here</a>, and Visual Studio documentation <a href="http://msdn.microsoft.com/en-us/library/ms177415.aspx" rel="nofollow noreferrer">here</a>.</p> <p>If you need a standards-compliant solution, there is one detailed in an answer to <a href="https://stackoverflow.com/questions/5588855/standard-alternative-to-gccs-va-args-trick">this question</a>.</p> <p>So if you are using either gcc or Visual Studio, you should be able to use your original macro with this simple change:</p> <pre><code>#define CCB_CREATE(object_type,...) \ static CCNode * create##object_type##Node() { \ std::map<std::string, CCNodeLoader*> loader_map; \ std::string classname = #object_type; \ FOR_EACH(INSERT_LOADER_MAP,object_type,##__VA_ARGS__); \ return loadCCBFile((classname + ".ccbi").c_str(), loader_map); \ } </code></pre> <p><strong>Edit:</strong> You would need to use the <code>##__VA_ARGS__</code> extension in the <code>FOR_EACH()</code> macro as well, or the more elegant modification suggested by ugoren.</p> <pre><code>#define FOR_EACH(what, x, ...) FOR_EACH_(FOR_EACH_NARG(x, ##__VA_ARGS__), what, x, __VA_ARGS__) </code></pre>

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