[Bug libstdc++/69879] Create a pointer to the default operator new and delete

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69879

--- Comment #8 from Jonathan Wakely <redi at gcc dot gnu.org> ---
I missed this question, sorry. The changes needed to add new symbols to
libstdc++.so (including adjusting the tests) are documented at:
https://gcc.gnu.org/onlinedocs/libstdc++/manual/appendix_porting.html#build_hacking.configure.version