Re: %destructor and unused values

[John P. Hartmann]

Adding $$ = $1 kept Bison quiet.

Here is a variation that gets Unused value $1.

assign         :  variable ASSIGN expression
                  {
                     $$->term.oper = op_assign;

This is also fixed by stating the default action.

Surely this is a bug (?).

On 28 January 2013 16:43, John P. Hartmann <address@hidden> wrote:
> But here is another one:
>
>                |  dotobyfors dotobyfor { listend($1, $2); }
>
> Gets "warning: unset value: $$".
>
> I'm relying on the default $$ = $1 here.
>
> Or is there something more subtle going on?  Or (shudder) is the
> default applied only when there is no explicit semantic code?  (In
> which case I have a lot of grammars to fix.)