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Subject: [Bug c++/49921] [C++0x] Segfault during compilation, decltype and operator->*
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D49921

--- Comment #2 from fabian.bergmark at gmail dot com 2011-07-31 10:57:17 UT=
C ---
(In reply to comment #1)
> Confirmed. Mainline says:
>=20
> 49921.C: In function =E2=80=98int main()=E2=80=99:
> 49921.C:15:25: internal compiler error: tree check: expected record_type =
or
> union_type or qual_union_type, have translation_unit_decl in
> maybe_dummy_object, at cp/tree.c:2474

To quote Modern C++ Design by Andrei Alexandrescu:

"In C++, where every object has a type, the result of operator->* or operat=
or.*
is a unique exception."

and

"Both are binary functions all right, and they return something to which you
can apply the function-call operator immediately, but that "something" does=
 no
have a type."

Is this possibly the reason to the error?