[Bug c++/88907] Variadic template function deduction failure.

pinskia at gcc dot gnu.org gcc-bugzilla@gcc.gnu.org
Thu Feb 24 10:24:58 GMT 2022


https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88907

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|                            |2022-02-24
             Status|UNCONFIRMED                 |NEW
     Ever confirmed|0                           |1

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Reduced testcase:
template<class... T> class Base{};
template<class... Ts> void error(Base<Ts> const &... args){}
template<class... Ts,  class = void> void error(Ts &&... args){}
int main()
{
    Base<int> const a;
    error(a);
}
---- CUT ---
Looks like GCC takes into account the default template argument incorrectly.


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