https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100209
Patrick Palka <ppalka at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |ppalka at gcc dot gnu.org
Last reconfirmed| |2021-04-23
Ever confirmed|0 |1
Status|UNCONFIRMED |NEW
--- Comment #2 from Patrick Palka <ppalka at gcc dot gnu.org> ---
Confirmed. A bit more reduced:
struct A { int a = 0; };
template <class Derived>
struct B
{
int b = 0;
constexpr Derived f(int n) {
return *static_cast<Derived*>(this);
}
};
struct C : A, B<C> { };
constexpr C c = C().f(10);
100209.C:14:22: in ‘constexpr’ expansion of ‘C().C::<anonymous>.B<C>::f(10)’
100209.C:14:25: error: ‘*(const C*)((C*)(((B<C>*)this) + -4))’ is not a
constant expression
14 | constexpr C c = C().f(10);
| ^
