[Bug tree-optimization/64280] [5 Regression] ICE in replace_uses_by, at tree-cfg.c:1789

["trippels at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64280

Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |trippels at gcc dot gnu.org

--- Comment #1 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
reduced test case:

class A
{
public:
  A ();
};
class B
{
public:
  B (int);
  operator void *() { return m_fn1 () ? 0 : this; }
  int m_fn1 ();
};
typedef int jmp_buf[];
struct C
{
  jmp_buf cond_;
};
class F
{
  C what_;
  bool m_fn2 ();
};
int _setjmp (int[]);
void longjmp ();
class D
{
public:
  D () { longjmp (); }
};
bool
F::m_fn2 ()
{
  B a (0);
  if (a)
    if (_setjmp (what_.cond_))
      return 0;
    else
      D ();
  A b;
}