[Bug other/67893] [5 Regression] memory hog building a C++ file (on x86_64-linux-gnu)

[doko at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67893

--- Comment #3 from Matthias Klose <doko at gcc dot gnu.org> ---
> What's the second preprocessed source from?

the same .cpp file built with gcc-4.9.