| Index: bison/src/bison/2.4.1/bison-2.4.1-src/lib/xmalloc.c
|
| ===================================================================
|
| --- bison/src/bison/2.4.1/bison-2.4.1-src/lib/xmalloc.c (revision 0)
|
| +++ bison/src/bison/2.4.1/bison-2.4.1-src/lib/xmalloc.c (revision 0)
|
| @@ -0,0 +1,122 @@
|
| +/* xmalloc.c -- malloc with out of memory checking
|
| +
|
| + Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
|
| + 1999, 2000, 2002, 2003, 2004, 2005, 2006, 2008 Free Software Foundation,
|
| + Inc.
|
| +
|
| + This program is free software: you can redistribute it and/or modify
|
| + it under the terms of the GNU General Public License as published by
|
| + the Free Software Foundation; either version 3 of the License, or
|
| + (at your option) any later version.
|
| +
|
| + This program is distributed in the hope that it will be useful,
|
| + but WITHOUT ANY WARRANTY; without even the implied warranty of
|
| + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
| + GNU General Public License for more details.
|
| +
|
| + You should have received a copy of the GNU General Public License
|
| + along with this program. If not, see <http://www.gnu.org/licenses/>. */
|
| +
|
| +#include <config.h>
|
| +
|
| +#if ! HAVE_INLINE
|
| +# define static_inline
|
| +#endif
|
| +#include "xalloc.h"
|
| +#undef static_inline
|
| +
|
| +#include <stdlib.h>
|
| +#include <string.h>
|
| +
|
| +#ifndef SIZE_MAX
|
| +# define SIZE_MAX ((size_t) -1)
|
| +#endif
|
| +
|
| +/* 1 if calloc is known to be compatible with GNU calloc. This
|
| + matters if we are not also using the calloc module, which defines
|
| + HAVE_CALLOC and supports the GNU API even on non-GNU platforms. */
|
| +#if defined HAVE_CALLOC || defined __GLIBC__
|
| +enum { HAVE_GNU_CALLOC = 1 };
|
| +#else
|
| +enum { HAVE_GNU_CALLOC = 0 };
|
| +#endif
|
| +
|
| +/* Allocate N bytes of memory dynamically, with error checking. */
|
| +
|
| +void *
|
| +xmalloc (size_t n)
|
| +{
|
| + void *p = malloc (n);
|
| + if (!p && n != 0)
|
| + xalloc_die ();
|
| + return p;
|
| +}
|
| +
|
| +/* Change the size of an allocated block of memory P to N bytes,
|
| + with error checking. */
|
| +
|
| +void *
|
| +xrealloc (void *p, size_t n)
|
| +{
|
| + p = realloc (p, n);
|
| + if (!p && n != 0)
|
| + xalloc_die ();
|
| + return p;
|
| +}
|
| +
|
| +/* If P is null, allocate a block of at least *PN bytes; otherwise,
|
| + reallocate P so that it contains more than *PN bytes. *PN must be
|
| + nonzero unless P is null. Set *PN to the new block's size, and
|
| + return the pointer to the new block. *PN is never set to zero, and
|
| + the returned pointer is never null. */
|
| +
|
| +void *
|
| +x2realloc (void *p, size_t *pn)
|
| +{
|
| + return x2nrealloc (p, pn, 1);
|
| +}
|
| +
|
| +/* Allocate S bytes of zeroed memory dynamically, with error checking.
|
| + There's no need for xnzalloc (N, S), since it would be equivalent
|
| + to xcalloc (N, S). */
|
| +
|
| +void *
|
| +xzalloc (size_t s)
|
| +{
|
| + return memset (xmalloc (s), 0, s);
|
| +}
|
| +
|
| +/* Allocate zeroed memory for N elements of S bytes, with error
|
| + checking. S must be nonzero. */
|
| +
|
| +void *
|
| +xcalloc (size_t n, size_t s)
|
| +{
|
| + void *p;
|
| + /* Test for overflow, since some calloc implementations don't have
|
| + proper overflow checks. But omit overflow and size-zero tests if
|
| + HAVE_GNU_CALLOC, since GNU calloc catches overflow and never
|
| + returns NULL if successful. */
|
| + if ((! HAVE_GNU_CALLOC && xalloc_oversized (n, s))
|
| + || (! (p = calloc (n, s)) && (HAVE_GNU_CALLOC || n != 0)))
|
| + xalloc_die ();
|
| + return p;
|
| +}
|
| +
|
| +/* Clone an object P of size S, with error checking. There's no need
|
| + for xnmemdup (P, N, S), since xmemdup (P, N * S) works without any
|
| + need for an arithmetic overflow check. */
|
| +
|
| +void *
|
| +xmemdup (void const *p, size_t s)
|
| +{
|
| + return memcpy (xmalloc (s), p, s);
|
| +}
|
| +
|
| +/* Clone STRING. */
|
| +
|
| +char *
|
| +xstrdup (char const *string)
|
| +{
|
| + return xmemdup (string, strlen (string) + 1);
|
| +}
|
|
|
| Property changes on: bison\src\bison\2.4.1\bison-2.4.1-src\lib\xmalloc.c
|
| ___________________________________________________________________
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| Added: svn:eol-style
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| + LF
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