------- Comment #10 from mmitchel at gcc dot gnu dot org 2006-09-10 22:04
-------
I am not convinced that the code in Comment #8 is valid.
Although the operand of sizeof is not in fact evaluated, it seems odd to permit
an operand which cannot, even in principle, be evaluated. This is not even a
case in which evaluating the operand would lead to undefined behavior; there is
simply no way to evaluate the operand at all. If there is an implicit
conversion from B* to Z* at this point, then we must know how to performn the
conversion, but we cannot, since B is not complete.
Are you arguing that in:
struct B {};
struct D : public B {
static const int i = sizeof((B*)(D*)0);
};
the conversion from D* to B* is a static_cast?
Has anyone asked about this case on the core reflector?
--
mmitchel at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |WAITING
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27177
