linux下的gcc编译器

				// { dg-do compile }								// Copyright (C) 2003 Free Software Foundation, Inc.				// Contributed by Nathan Sidwell 28 Jan 2003 								// PR 9437. We'd unify 'T *' with 'U C::*', which is obviously broken								struct X				{				  template 				  operator T* () const { return static_cast (0); }				} null;								struct A { int i; };								static void f (int A::* pmi) { }								int main () { f (null); } // { dg-error "cannot convert" "" }