Directly casting from pointer to a template function?

Question

I am trying to take a pointer to an instance of function template and cast it to void*:

#include 

void plainFunction(int *param) {}

template         


        

Answer 1

Compiler should generate error in both cases. Function pointers are not convertible to void* according to the Standard §4.10/2 since functions are not objects (§1.8/1). Visual Studio 2008 allows this as an extension, check this bug.

Use typedef to avoid misunderstanding:

typedef void(func)(int*); // declare func type
func* addr1 = &plainFunction;         // OK
func* addr2 = &templateFunction; // OK