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Re: [patch] Default to --enable-libstdcxx-time=auto


On 24 May 2013 15:07, Jakub Jelinek <jakub@redhat.com> wrote:
> On Fri, May 24, 2013 at 02:56:24PM +0100, Jonathan Wakely wrote:
>> > Jonathan/Benjamin, could you please review the patch in the mean time,
>> > so that if it works well for Rainer, it can be applied immediately and
>> > 4.8.1-rc2 rolled, even during the weekend?
>>
>>
>> In the fallback for steady_clock::now() would it be easier to just
>> call system_clock::now() instead of duplicating its logic?
>
> Yeah, that is what I've tried in
> http://gcc.gnu.org/ml/gcc-patches/2013-05/msg01440.html
> but it failed horribly, because the return type from both the static methods
> is different (system_clock::time_point (aka chrono::time_point<system_clock,
> duration>) in the first case,
> steady_clock::time_point (aka chrono::time_point<steady_clock, duration>)
> in the latter).  And there is no conversion in between the two.

Ah of course, sorry.

> Perhaps I'd have to do something like:
>   return time_point(system_clock::now().time_since_epoch());
> ?  Can try that.

Yes, they share the same epoch so that should work.


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