Re: gcc 4.6 -Wunused-but-set-variable

Peter Eisentraut <peter_e@gmx.net> writes:
> I couldn't see a way good way of programming around this (perhaps in the
> second case, but it would get uselessly ugly), so perhaps just marking
> the variables as potentially unused would be appropriate?  See patch.

Of course this would break not only on non-gcc compilers, but old
versions of gcc.  I'd suggest a macro (cf PERL_UNUSED_DECL) and some
version checks at the site of the macro declaration (perhaps the ones
emitted by bison for its use of this construct will do).
        regards, tom lane