http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49298
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2011.06.06 09:53:32
Known to work| |4.5.2
Summary|c++0x regression: sorry, |[4.6/4.7 Regression]
|unimplemented: unexpected |[C++0x] sorry,
|ast of kind field_decl |unimplemented: unexpected
| |ast of kind field_decl
Ever Confirmed|0 |1
Known to fail| |4.6.0, 4.7.0
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> 2011-06-06
09:53:32 UTC ---
reduced:
namespace detail {
template<class Parent, class Member>
inline unsigned offset_from_pointer_to_member(const Member Parent::*
ptr_to_member)
{
const Parent * const parent = 0;
const char *const member = reinterpret_cast<const
char*>(&(parent->*ptr_to_member));
return unsigned(member - reinterpret_cast<const char*>(parent));
}
template<class Parent, class Member>
inline Parent *parent_from_member(Member *member, const Member Parent::*
ptr_to_member)
{
return (Parent*)((char*)member -
offset_from_pointer_to_member(ptr_to_member));
}
template<class Parent, class Member>
inline const Parent *parent_from_member(const Member *member, const Member
Parent::* ptr_to_member)
{
return (const Parent*)((const char*)member -
offset_from_pointer_to_member(ptr_to_member));
}
}
template<class Config>
class list_impl
{
struct data_t
{
} data_;
data_t* get();
static void priv_container_from_end_iterator()
{
data_t *d = get();
(void)detail::parent_from_member<list_impl, data_t>(d,
&list_impl::data_);
}
};
interface.cc: In static member function 'static void
list_impl<Config>::priv_container_from_end_iterator()':
interface.cc:40:80: sorry, unimplemented: unexpected ast of kind field_decl
interface.cc:40:80: internal compiler error: in
potential_constant_expression_1, at cp/semantics.c:7952
