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

[mathias at gaunard dot com]

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

--- Comment #12 from Mathias Gaunard <mathias at gaunard dot com> ---
This may be considered a duplicate of #53525, though that bug is more focused
on performance than memory usage.