[Bug c++/120453] [16 regression] qcoro fails to build its tests (error: use of deleted function ... is implicitly deleted because the default definition would be ill-formed) since r16-773-ge06555a40c051d

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120453

--- Comment #11 from Iain Sandoe <iains at gcc dot gnu.org> ---

so... if I add this - non-coroutine ... 


LazyTask<int>
foo (detail::LazyTaskPromise& p)
{
  decltype(auto) Gro = p.get_return_object();
  return Gro;
}

we essentially get the same fail;

../temp-coro-tests/pr120453.ii: In function ‘QCoro::LazyTask<int>
QCoro::foo(detail::LazyTaskPromise&)’:
../temp-coro-tests/pr120453.ii:93:10: error: use of deleted function
‘QCoro::LazyTask<int>::LazyTask(QCoro::LazyTask<int>&&)’
   93 |   return Gro;
      |          ^~~
../temp-coro-tests/pr120453.ii:80:28: note:
‘QCoro::LazyTask<int>::LazyTask(QCoro::LazyTask<int>&&)’ is implicitly deleted
because the default definition would be ill-formed: