[cfe-commits] [libc++] Switching to 'double underscore' notation for has_feature.

[Howard Hinnant]

On Mar 2, 2012, at 2:56 PM, Eli Friedman wrote:

> On Thu, Mar 1, 2012 at 11:50 PM, Jean-Daniel Dupas
> <devlists at shadowlab.org> wrote:
>> It does not solve the "do not use identifier that can conflict with legitimate user macros" issue.
>> 
>> ---------------
>> #define cxx_noexpect noexcept()
>> 
>> #if __has_feature(__cxx_noexpect__) || __has_feature(cxx_noexpect)
>> 
>> #endif
>> ---------------
> 
> We could make a variant of this work if we really wanted to using #if
> defined(cxx_noexcept) or something like that.  Not sure if it's
> worthwhile, though.

I've seen no reports from the field that would indicate that this problem is that urgent.

Howard