On Wed, Jan 13, 2016 at 03:33:27PM -0500, Jason Merrill wrote:
> On 01/13/2016 11:50 AM, Marek Polacek wrote:
> >So to quash that -Wunused-parameter warning, I decided to set TREE_USED at
> >the
> >place where we create those #xs parameters.
>
> Won't that cause false negatives when the parameter pack is never mentioned
> in the function?
You mean that e.g. for
auto fn = [](auto&&... xs)
{
};
int
main ()
{
fn (1, 2, 3);
}
we won't print
z.cc:1:24: warning: unused parameter 'xs' [-Wunused-parameter]
anymore? Unfortunately, we don't print that even without the patch :(.
Marek
