Bug 303647

If I pass a pointer to member as a function argument, the DU chain shows an erroneous function signature, see attached screenshot 

Reproducible: Always

Steps to Reproduce:
1. open the small sample code I attached in "Additional Information"
2. Hover with the mouse over the function configure_p2m 
3. look at the popup showing the function signature
Actual Results:  
The function signature seems to have 2 arguments instead of one:
void configure_p2m(function int PointerToMemberTest::*()const , int PointerToMemberTest::* get_ptr)

Expected Results:  
it should show:
void configure_p2m(int (PointerToMemberTest::*get_ptr)() const);

even when hovering over the pointer to member itself, the contents of the popup is questionable:
int PointerToMemberTest::* PointerToMemberTest()
Looks like a constructor with the return value int PointerToMemberTest::*  ....


#include <iostream>

class PointerToMemberTest
{
public:
   int (PointerToMemberTest::*d_pget)() const;
   void configure_p2m(int (PointerToMemberTest::*get_ptr)() const);
   PointerToMemberTest(int init_val);
   int get_single() const;
   int get_double() const;
   int get() const;
private:
   int d_value;
};

int PointerToMemberTest::get_single() const
{
   return d_value;
}

int PointerToMemberTest::get_double() const
{
   return d_value * 2;
}

int PointerToMemberTest::get() const
{
   return (this->*d_pget)();
}

PointerToMemberTest::PointerToMemberTest(int init_val)
: d_value(init_val)
{
}

void PointerToMemberTest::configure_p2m(int (PointerToMemberTest::*get_ptr)() const)
{
   d_pget = get_ptr;
}

int main(int argc, char **argv)
{
   PointerToMemberTest p2mtest(5);
//   p2mtest.configure_p2m(&PointerToMemberTest::get_double);
   p2mtest.configure_p2m(&PointerToMemberTest::get_single);
   std::cout << "Return value of getter: " << p2mtest.get() << std::endl;
}