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
