https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102916
--- Comment #12 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Darrell Wright from comment #2)
> The constexpr value returned is different depending on the compiler. If one
> uses clang and gcc this leads to an ODR issue as
>
> void bar( ) {
> if constexpr( foo<[]{ return std::sqrt( 4.0 ); }>( ) ) {
> doA( );
> } else {
> doB( );
> }
> }
This is EXTREMELY contrived. You've basically set up a program where you detect
is std::sqrt is constexpr, and then said you get different results depending
whether std::sq
