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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
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