------- Comment #3 from redi at gcc dot gnu dot org 2009-11-03 13:32 ------- (In reply to comment #2) > > Is there a sane workaround for this?
Don't use 'const' members of unions. Union members cannot have a non-trivial copy assignment operator. The assignment operator for A cannot be implicitly defined, as the const member would make the program ill-formed. I'm not sure whether using A in a union causes the implicitly-declared copy assignment operator to be implicitly defined, but that seems to be what's happening. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39934
