https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113366
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Ever confirmed|0 |1
Last reconfirmed| |2024-01-13
Status|UNCONFIRMED |NEW
--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
I already defined a constexpr bool variable template in that class, and using
it in the __maybe_const_t alias seems to fix the -fconcepts-ts problem:
// Format as const if possible, to reduce instantiations.
template<typename _Tp>
using __maybe_const_t
= __conditional_t<__formattable<_Tp>, const _Tp, _Tp>;
But then there are loads of other errors due to using attributes on constrained
functions:
format:4159:5: error: two consecutive '[' shall only introduce an attribute
before '[' token
4159 | [[__gnu__::__always_inline__]]
I'll need to move those attributes.
Or maybe I can just make <format> reject attempts to use it with -fconcepts-ts
]:-)
<format> is C++20 code, so you don't need the Concepts TS. Fix your concepts to
work with C++20 instead!
