[Bug c++/67075] Infinite GC loop with ggc-min-expand=0

["egallager at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67075

Eric Gallager <egallager at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |WAITING
   Last reconfirmed|                            |2017-08-14
                 CC|                            |egallager at gcc dot gnu.org
     Ever confirmed|0                           |1

--- Comment #4 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #2)
> Sounds more like ggc_collect is now always doing the gc and there are a lot
> of ggc_collect calls. 
> 
> So what is happening we are close to your 32M limit you set, so any garbage
> that is produced in a pass will cause the next call to ggc_collect to always
> collect. This means there a lot of calls to ggc_collect but in the normal
> case (non 0 case), it does not matter. 
> 
> You might want to try 5.2 as 4.8.x is no longer supported and there have
> been some memory reductions happened since 4.8.x.

Changing to WAITING until reporter tries a supported version.