Blame lib/realloc.c

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/*
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 * Check: a unit test framework for C
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 * Copyright (C) 2001, 2002 Arien Malec
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 *
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 * This library is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU Lesser General Public
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 * License as published by the Free Software Foundation; either
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 * version 2.1 of the License, or (at your option) any later version.
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 *
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 * This library is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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 * Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with this library; if not, write to the
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 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
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 * MA 02110-1301, USA.
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 */
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/*
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 * AC_FUNC_REALLOC in configure defines realloc to rpl_realloc if
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 * realloc (p, 0) or realloc (0, n) is NULL to provide GNU
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 * compatibility
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 */
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#include "libcompat.h"
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/* realloc has been defined to rpl_realloc, so first undo that */
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#undef realloc
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/* this gives us the real realloc to use below */
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void *realloc(void *p, size_t n);
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/* force realloc(p, 0) and realloc (NULL, n) to return a valid pointer */
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void *rpl_realloc(void *p, size_t n)
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{
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    if(n == 0)
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        n = 1;
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    if(p == 0)
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        return malloc(n);
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    return realloc(p, n);
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}