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// PR c++/53305
// { dg-do compile { target c++11 } }
template<class... Ts> struct tuple { };
struct funct
{
template<class... argTs>
int operator()(argTs...);
};
template<class...> struct test;
template<template <class...> class tp,
class... arg1Ts, class... arg2Ts>
struct test<tp<arg1Ts...>, tp<arg2Ts...>>
{
template<class func, class...arg3Ts>
auto test2(func fun, arg1Ts... arg1s, arg3Ts... arg3s)
-> decltype(fun(arg1s..., arg3s...));
};
int main()
{
test<tuple<>, tuple<char,int>> t2;
t2.test2(funct(), 'a', 2);
}
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