gengtype: conditional GTY ? (to add before GCC 6 release)

[Michael Matz]

Hi,

On Fri, 12 Feb 2016, Richard Biener wrote:

> >What do you think about refactoring iterators in GCC 7?
> 
> I think refactoring towards STL style iterators would be welcome.  It 
> may be different for the actual instances though.

Oh God, please, for the live of all kittens, no.  If anything, implement 
and use a range idiom like in D.


Ciao,
Michael.