https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110468
--- Comment #7 from gococobu at 7art dot org --- Being a newbie, I don't want to add too much noise to this... but the ICE doesn't appear when `multivar def` doesn't have any initializer. If assigned (or with brace enclosed init), it does crash, even if done explicitly (i.e. ` = boost::variant<boost::blank>()`).
