[Bug c++/69116] [4.9/5/6 Regression] compile error when including valarray

[jason at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69116

--- Comment #5 from Jason Merrill <jason at gcc dot gnu.org> ---
I don't see a compiler bug here.  EDG also rejects the reduced testcase, for
the same reason.