Re: [PATCH. libstdc++] Use the correct C++14 __cplusplus value (201402L). Added C++1z to the preprocessor.

[Paolo Carlini <paolo dot carlini at oracle dot com>]

Hi,

On 08/26/2014 10:42 AM, Rainer Orth wrote:
> Paolo Carlini <paolo.carlini@oracle.com> writes:
>
> > Hi,
> >
> > On 08/24/2014 12:37 AM, Ed Smith-Rowland wrote:
> > > With revision 214400 we have the C++14 value of __cplusplus set to the
> > > correct value of 201402L (from 201300L).
> > It occurs to me: instead of having to remember every time those numbers,
> > couldn't we predefine, for example:
> >
> >      __cplusplus_98
> >      __cplusplus_11
> >      __cplusplus_14
> >
> > with the correct values of course?!?
> But won't this lead to portability trouble in the future when people see
> those macros and start using them in their own code, breaking
> compilation with older or non-g++ compilers?
Well, this can happen for any GNU predefined macro... What can I say, I 
tried to help ;) As a last resort we can maybe define the macros in 
bits/c++config...

Paolo.