[Bug c++/51804] Wabi false positives

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51804

Jason Merrill <jason at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |jason at gcc dot gnu.org

--- Comment #4 from Jason Merrill <jason at gcc dot gnu.org> 2012-01-09 22:22:11 UTC ---
(In reply to comment #0)
> I see a lot of things like:
> 
> s.h:752:7: warning: the mangled name of ‘void
> __gnu_test::constexpr_single_value_constructible::_Concept<_Ttesttype,
> _Tvaluetype, true>::__constraint() [with _Ttesttype = std::tuple<int, int>;
> _Tvaluetype = std::tuple<short int, short int>]’ will change in a future
> version of GCC [-Wabi]
> 
> I'm finding it harder to make sense of this warning. Is this a false positive?

Doesn't look like it. Any use of variadic templates in a function signature
will result in a -Wabi warning now, since the mangling of argument packs
changes in -fabi-version=6.