[Bug c++/59838] ICE with an enum using an incomplete type

[ville.voutilainen at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59838

--- Comment #3 from Ville Voutilainen <ville.voutilainen at gmail dot com> ---
Ok, but the patch needs to be massaged a bit to give an error in the case where
the underlying type is not set, if the complain flag has error set. I can do
that, seems simple enough.