Future evolution of c++config.h and _GLIBCXX_USE_LONG_LONG

[Paolo Carlini]

Gabriel Dos Reis wrote:

>Beside name space issues explained by Matt, I would like to point out
>that adding or subtracting a virtual function is an ABI change. So is
>reordering declarations of such beasts.
>  
>
Indeed. But, definitely, the bulk of the issue seems in the namespace 
issues,
aka _GLIBCXX_USE_C99.

Incidentally, yesterday was wondering whether we could add support for
long long in locale *without* adding virtuals, f.i., adding only 
num_get::get
overloads and not adding to the number of num_get::do_get...

Paolo.