http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46862
--- Comment #2 from Janis Johnson <janis at gcc dot gnu.org> 2010-12-09
18:42:13 UTC ---
TYPE_TRANSPARENT_AGGR is set in begin_class_definition in semantics.c for the
classes std::decimal::decimal{32|64|128}. It assumes that they are defined as
in the GNU Standard C++ Library. That code should probably ICE with a good
message if there is no first field or if the first field doesn't have an
expected type. If that sounds appropriate I can write a patch.
The C++ compiler would have to know details of other implementations of the
decimal classes in order to pass them as the underlying scalar types.
