cast error with reference fields

ID0002396: This issue was created automatically from Mantis Issue 2396. Further discussion may take place here.

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Id	Project	Category	View	Due Date	Updated
ID0002396	Frama-C	Plug-in > clang	public	2018-08-24	2018-08-24

Reporter	abhishek.anand.iitg@gmail.com	Assigned To	virgile	Resolution	open
Priority	normal	Severity	minor	Reproducibility	always
Platform	-	OS	manjaro	OS Version	8/23/3018
Product Version	Frama-C 17-Chlorine	Target Version	-	Fixed in Version	-

Description :

class B {
};

template <typename T>
class A {
public:
  T &x;
  A(T &y): x(y) {}
};

int main()
{
    B b;
    B & y=b;
    A<B> a(y);
}

I get the following error:

root@27db7a69b96a:/hostshare# frama-c -print refFieldBug.cpp                
[kernel] Parsing refFieldBug.cpp (external front-end)
Now output intermediate result
[kernel] refFieldBug.cpp:8: Failure: castTo struct _Z1B -> struct _Z1B *
[kernel] User Error: stopping on file "refFieldBug.cpp" that has errors.
[kernel] Frama-C aborted: invalid user inp

I don't see what could be the problem because the following succeeds:

class A {
public:
  T &x;
  A(T &y): x(y) {}
};

int main()
{
    int x=0;
    int & y=x;
    A<int> a(y);
}