https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66358
--- Comment #23 from David Binderman <dcb314 at hotmail dot com> --- Problem seems to have gone away with gcc version 6.1.1, dated 20160621
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66358
--- Comment #23 from David Binderman <dcb314 at hotmail dot com> --- Problem seems to have gone away with gcc version 6.1.1, dated 20160621