Messages in this thread | | | Date | Tue, 2 Feb 2016 22:46:07 -0500 | From | Kevin Easton <> | Subject | Re: [PATCH] kernel/fork.c: use sizeof() instead of sizeof |
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On Tue, Feb 02, 2016 at 05:04:06PM +0000, Al Viro wrote: > FWIW, the actual rules are > unary-expression: postfix-expression | > ++ unary-expression | > -- unary-expression | > - cast-expression | > + cast-expression | > ! cast-expression | > ~ cast-expression | > * cast-expression | > & cast-expression | > sizeof unary-expression | > sizeof ( type-name ) > cast-expression: unary-expression | > ( type-name ) cast-expression > Note that while e.g. > ++ ++ n > is allowed by grammar, it runs afoul of the constraint for ++ argument, which > must be a modifiable lvalue. None of the operators above yield that, so > the rules for ++ and -- might as well have been ++ postfix-expression and > -- postfix-expression resp.
Unless I'm mistaken, * cast-expression yields an lvalue.
- Kevin
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