template-copy-constructor-or-is-it.cpp

#include <iostream>
using namespace std;

struct Foo {
    Foo() = default;

    Foo(const Foo&) { cout << "Foo::Foo(const Foo&)" << endl; }
    template<class T> Foo(const T&) { cout << "Foo::Foo<T>(const T&)" << endl; }
};

int main() {
    auto f = Foo{};
    auto copy_f = f;
}