🚀 go-pugleaf

In article <6495221.12652.4448@kcbbs.gen.nz>, martin@kcbbs.gen.nz (Martin
Kealey) wrote:

> The shift states in many parsers would see that as a cast leading into an
> expression, and then note that the thing following the ) is not valid for an
> expression, and reduce the sizeof.

This last explaination can be misleading.  'sizeof' can be followed by a
"unary-expression" not something more general like "expression". Otherwise
the following would be ambigous: 

      sizeof (char) + 1
            this is '(sizeof(char)) + 1', i.e. '2'; not 'sizeof
((char)+1)', i.e. '1'
            [wow, I actually found a "use" for unary '+'!]

      char c; sizeof c + 1
            this is '(sizeof c) + 1', i.e. '2'; not 'sizeof (c + 1)', i.e. '1'
       --scott