[Bug libstdc++/58403] __normal_iterator triggers odr-use

[lichray at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58403

--- Comment #2 from Zhihao Yuan <lichray at gmail dot com> ---
Created attachment 30807
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=30807&action=edit
test case