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// { dg-do compile { target c++17 } } #include <tuple> #include <variant> int main() { using variant_t = std::variant<short, int, long>; constexpr auto variant_v = variant_t{std::in_place_index_t<0>{}, short{}}; constexpr auto tuple = std::make_tuple(variant_v); constexpr std::tuple tuple_v{variant_v}; }