https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85011
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords|diagnostic |rejects-valid
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
clang says
t.C:5:33: error: return type of out-of-line definition of 'foo::f1' differs
from
that in the declaration
template <class T> auto foo<T>::f1() -> decltype ((this)->foo<T>::x) {}
^
t.C:3:8: note: previous declaration is here
auto f1() -> decltype(x);
^
1 error generated.
so I'm not sure the standard says they are the same
