[Bug c++/56746] [4.8 regression] increased memory usage when compiling C++

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56746

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |dodji at gcc dot gnu.org

--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> 2013-03-28 09:51:35 UTC ---
(In reply to comment #5)
> While trying to isolate the problem, I have observed that the problem does not
> occur if -save-temps is used.
> While using -save-temps does not change anything with GCC 4.7, using it does
> reduce memory usage significantly with GCC 4.8.
> 
> Did something change with regards to the way temporary files are handled?

No, but using pre-processed source results in less pressure on line-tables
as no macro recording is taking place.  You could try -ftrack-macro-expansion=0
(which is undocumented - bah - Dodji, please fix that, invoke.texi).

Unreduced preprocessed source is ok, you can also upload it somewhere
accessible
if it's rejected here as attachment (compress it before attaching).