Jonathan George <Jonathan.George@trcinc.com> writes:
> This patch has many bogus corrections where new variables were created, but
> the order of evaluation is already unambiguous.
>
> For example each comma separated clause in an expression is guaranteed to be
> completely evaluated before the next comma separated clause Including
> Assignments.
No, that is not true in general. When the comma in question is
the comma operator, it is true. But when the comma separates
arguments to a function, it is not: the order of evaluation of
function arguments is implementation dependent. See C89 section
6.3.2.2 "Function calls":
$ The order of evaluation of the function designator, the
$ arguments, and subexpressions within the arguments is
$ unspecified, ...
-- "Premature optimization is the root of all evil." --D. E. Knuth, "Structured Programming with go to Statements" - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Mon Oct 23 2000 - 21:00:09 EST