Hi all, When we pass variable arguments to printf , and compiles the code it compiles without any problem but when we use -Wall options it catch the mismatch. I just want to know where I can found that piece of code which does this all checking. Thanks Shanky -- View this message in context: http://www.nabble.com/Where-to-get-the-code-for-gcc--Wall-tp23701391p23701391.html Sent from the gcc - Help mailing list archive at Nabble.com.