Re: Does boost have an assert that works nicely with constexpr evaluation, and if not should we add one?

From: Ivan Matek (libbooze_at_[hidden])
Date: 2021-08-21 19:13:51

P.S. I think gcc might have been reason why I misremembered how assert does
or does not work in constexpr, so maybe
that is the reason why it is commented out in clamp?
It was fixed few years ago(GCC 9).
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86678

On Sat, Aug 21, 2021 at 9:05 PM Ivan Matek <libbooze_at_[hidden]> wrote:

>
>
> On Sat, Aug 21, 2021 at 5:56 PM Peter Dimov via Boost <
> boost_at_[hidden]> wrote:
>
>> It does. https://www.godbolt.org/z/KhPja6cEs
>>
> Ah my mistake. :(
> Do you then maybe know why boost clamp has commented out the assert in
> implementation?
>
> https://github.com/boostorg/algorithm/blob/c9077bd49580bddfaa8a5c71abc4022a2b09d972/include/boost/algorithm/clamp.hpp#L54
> I presumed it is to avoid problems with assert and constexpr, but as you
> now I learned assert works fine since C++14.
>