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				/* Copyright (C) 2001 Free Software Foundation, Inc.  */								/* { dg-do preprocess } */								/* Source: Neil Booth, 2 Oct 2001.								   Tests that we clear the disabled flag that is set by the				   macro-defined-to-itself optimization (the optimization might not be				   worth it).  */								#define foo foo				#undef foo				#define foo 1				#if !foo				#error foo still disabled! 				#endif