[Patch] [libstdc++] [constexpr] use macros in place of 'constexpr' to allow for disabling constexpr until fully supported by compiler

[Marc Glisse]

On Thu, 17 Feb 2011, Jonathan Wakely wrote:

> On 17 February 2011 16:11, Paolo Carlini wrote:
>> On 02/17/2011 03:06 PM, Adam Butcher wrote:
>>> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46472
[...]
> I don't much like the idea of patching the library and having to ship
> those changes in 4.6.0 to workaround that bug (I think the two PRs are
> the same issue.)  Especially as neither of those PRs shows code which
> is affected by using constexpr in the library (I'm sure such code
> exists, but the testcases provided don't show a library-related
> problem.)

Er, the one cited above shows an error with:
std::array<std::pair<int,int>,2> myvar;

-- 
Marc Glisse