linux下编程用 编译软件

				/* PR c++/4633 */				/* { dg-do compile } */								// The 'class X' inside the template used to escape (somehow),				// so that the typedef claimed that it was redefining X.								template  struct S ;								template  struct S				{				  template  struct R;				  template  struct R { };								  typedef int X;				};