Instance of a non-templated class using templated constructor interpreted as a function definition?

Question

My issue is best demonstrated by the following code:

#include 
#include 

class Bar
{
    public: template 

        

Answer 1

I think it is related to "C++ most vexing parse" that you will find in Meyer's Effective STL book.

 Bar bar(std::istream_iterator< char >(file), std::istream_iterator < char >()); 

Is being considered as a **function declaration.**

due to which in foo(bar); you are sending a function pointer instead :)

Doing like below will have no error: Bar bar = Bar(//your arguments here); foo(bar);