https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77413
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2016-08-30
Ever confirmed|0 |1
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Rainer Orth from comment #0)
> I noticed that the earlier (successful) test was compiled without -include
> bits/stdc++.h, while the newer (failing) one is using that flag. Omitting it
> manually lets the tests PASS.
Ah, this will be because -include bits/stdc++.h is in the default options, but
previously the use of { dg-options "-std=gnu++14" } would override the default
options.
Now that it uses { target c++14 } instead of dg-options it doesn't override the
default, so bits/stdc++.h is used. I wonder why the PCH breaks it.