// PR tree-optimization/22488// This testcase is really a C++ FE bug in represnting virtual inheritance// It gives the appearance to the middle end that the fields exist twice// which resulted in a very confused structure analyzer// { dg-do compile }// { dg-options "-O" }struct X{    int i0, i1;      char c;};struct A{    int i;      char c0, c1;        virtual ~A();};struct B : virtual A {};struct C : B{    X x;      void bar(X y) { x = y; }};void foo(){    C().bar(X());}