in latest build IDE highlights bar2 as a unresolved identifier. Original code has variadic template.

#include <iostream>
//template<typename T1>
class foo {
public:
    template<typename T2> foo(const T2& f) {
        std::cout << f << std::endl;
    }

    void bar1(const foo& v) {
        foo(v).bar2();
    }

    void bar2() {
    }
};

int main() {
//    foo<int> f1(1);
//    foo<float> f2(1.1f);
    foo(1);
    foo(1.2);
    foo('c');
    return 0;
}