https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91159
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |rejects-valid
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-07-13
Ever confirmed|0 |1
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
I think [class.default.ctor] p2 bullet (2.7) says that A()=default; should get
defined as deleted, because Base has no default constructor.
That seems like a defect in the standard because as you say, it doesn't need to
construct Base. This seems related to https://wg21.link/cwg257 but the =default
case seems to not have been fixed. Clang apparently does the "right" thing, in
violation of the standard.
