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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/86491] bogus and unsuppressible warning: 'YYY' has a base
 'ZZZ' whose type uses the anonymous namespace
Date: Wed, 10 Nov 2021 04:57:06 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D86491

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2021-11-10
     Ever confirmed|0                           |1
             Blocks|101603                      |

--- Comment #7 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Jason Vas Dias from comment #6)
> Thanks Andrew!
>=20
> But, please explain, why does using a static reference cause
> anonymous namespace issues ?

So I think the diagnostic should say internal linkage rather than anonymous
namespace but only for the static case rather than the anonymous spaces.

Reduced testcase:
# 1 "t1.H"
template < int *_C_OBJ_> struct NT{};
# 2 "tM.C"
static int d;
struct D : NT<&d> {};
---- CUT ----
The filenames of the two lines need to be different.


Referenced Bugs:

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D101603
[Bug 101603] [meta-bug] pointer to member functions issues=