[Bug middle-end/68983] [6 Regression] ICE: in store_field, at expr.c:6659

[lucdanton at free dot fr]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68983

--- Comment #8 from lucdanton at free dot fr ---
(In reply to Jason Merrill from comment #7)
> (In reply to lucdanton from comment #6)
> > I've independently run into this bug and applying this patch to HEAD doesn't
> > help on my end, the same ICE happens (except it is now pointing to line 
> > 6660 of
> > course).
> 
> Good to know.  Please attach a testcase?

Compiled with: g++-trunk -std=c++11 main.cpp

class A {
public:
  A m_fn1();
  A(A const &);
  int *L;
  int ref;
};
struct B : A {
  using base_type = A;
  B();
};
B::B() : base_type((0, m_fn1())) {}