On Fri, 26 Mar 2010, David Daney wrote: > > The GCC built-in __builtin_prefetch() is a vargs function. If we > don't wrap the macro parameter in parentheses, a comma operator in the > actual argument list might cause unintended parameters to be passed to > __builtin_prefetch(). This seems totally pointless and actively wrong. You cannot have a comma operator in the actual argument list to the #define, because if you did, then you'd get a macro "prefetch()" passed 2 arguments, but takes just 1 so the only way I see to pass a comma operator is to _already_ have the macro parameter in parenthesis. Linus -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
