https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69095
--- Comment #6 from Tony E Lewis <TonyELewis at hotmail dot com> --- For information: mine is now fixed too. More detail: my example that was previously triggering this Internal Compiler Error on GCC 5.2.1 now gets sensible error messages under "gcc HEAD 7.0.0 20161004" on http://melpon.org/wandbox/ .