https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98995
Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed| |2021-02-08
Status|UNCONFIRMED |SUSPENDED
Ever confirmed|0 |1
--- Comment #2 from Jason Merrill <jason at gcc dot gnu.org> ---
This was a deliberate change. This language/ABI issue is tracked at
https://wg21.link/cwg2403 and
https://github.com/itanium-cxx-abi/cxx-abi/issues/107
The problem is that we can't safely initialize a base or
potentially-overlapping member from the result of a function call, at least
without a major ABI break, because it might clobber other data allocated into
the tail padding.
