linux下编程用 编译软件

				// { dg-do compile }								// Copyright (C) 2003 Free Software Foundation, Inc.				// Contributed by Nathan Sidwell 12 Dec 2003 				// Origin: grigory@stl.sarov.ru								// PR c++/12881. ICE in thunk generation								struct c1 {};								struct c3 : virtual c1				{				    virtual c1* f6() {};				    int i;				};								struct c6 : virtual c3 { };								struct c7 : c3				{				    virtual c3* f6() {};				};								struct c24 : virtual c7				{				    virtual c6* f6();				};								c6* c24::f6() {  return 0; }								struct c31 : c24 {};