[Bug c++/117727] __builtin_bit_cast with target type nullptr_t unimplemented

[jsm28 at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117727

--- Comment #8 from Joseph S. Myers <jsm28 at gcc dot gnu.org> ---
As nullptr_t is in C23, arguably psABIs ought to define the representation of
nullptr_t as part of defining the C ABI.