[Bug c++/53341] overloaded operator delete(void *) appear in object file even when not directly used

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53341

--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
With -std=c++0x <algorithm> included <memory> (until a few days ago on trunk),
which is what caused the difference.

I don't see _ZdlPv since 4.8.0 though.