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// PR c++/53307
// { dg-do compile { target c++11 } }
template <class...Ts> struct tuple{};
struct funct
{
template <class T, class...argTs>
T operator()(T arg1, argTs...)
{
return arg1;
}
};
template <class...>class test;
template < template <class...> class tp,
class...arg1Ts,
class...arg2Ts>
class test<tp<arg1Ts...>, tp<arg2Ts...>>
{
public:
template <class func>
auto test_pass(func fun, arg2Ts...arg2s)
-> decltype(fun(arg2s...))
{
return fun(arg2s...);
}
template <class func, class...arg3Ts>
auto testbug(func fun, arg2Ts...arg2s, arg3Ts...arg3s)
-> decltype(fun(arg2s..., arg3s...))
{
return fun(arg2s..., arg3s...);
}
};
int main()
{
test<tuple<>, tuple<char, int>> t;
t.test_pass (funct(), 'a', 2);
t.testbug (funct(), 'a', 2, "fine");
t.testbug (funct(), 'a', 2);
}
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