Hi, I am looking at: http://lxr.linux.no/source/include/asm-i386/uaccess.h#L584 Where is this builtin_constant_p defined? I did a search and I was only able to find the places where it has been used. Regards, -- ---------------------------------------------------------------------------------- K Shakthi Specsoft (Hexaware Technologies), ASIC Design Center http://www.geocities.com/shakthimaan ---------------------------------------------------------------------------------- -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/