Hi, Recently, I am reading a C parser source code generated by Bison. The underlying OS is opensolaris. However, when I use it to parse a simple C source file, say,"Hello.c", I get the error message "/usr/inclue/sys/va_list.h:parse error before __gnuc_va_list". As I open this file, I find the following line "typedef __builtin_va_list __gnuc_va_list</i>". Strangely, I couldn't find the definition of "__builtin_va_list " even I checked all its including head files and recursively theirs. I have been confused about it for long. Would anyone give me some ideas about it? What is the "_builtin_va_list" referring to? What can it be used for? Thanks a great deal.:-(( -- View this message in context: http://www.nabble.com/where-is-the-definition-of-%22_builtin_va_list%22-tp25985646p25985646.html Sent from the gcc - Help mailing list archive at Nabble.com.