Peter Eisentraut <peter_e@gmx.net> writes:
> With GCC 4.3, I get warnings from every flex scanner that 'input' is defined
> but not used. This can be solved by adding %option noinput. I tested this
> option with a current flex and with the old 2.5.4a; both accept it. See
> attached patch. Does anyone see problems with this?
Hm, I wonder why we didn't see those before ... [ looks at code... ]
Oh: yyinput() recurses internally, so even though it's not called
from anywhere else, older gcc's don't realize it's really unreferenced.
I confirm 2.5.4 has the noinput option. Patch seems ok from here,
regards, tom lane