1 /* -*- buffer-read-only: t -*- vi: set ro: */
2 /* DO NOT EDIT! GENERATED AUTOMATICALLY! */
3 /* xmalloc.c -- malloc with out of memory checking
5 Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
6 2000, 2002, 2003, 2004, 2005, 2006, 2008, 2009, 2010 Free Software
9 This program is free software: you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
25 # define static_inline
33 /* 1 if calloc is known to be compatible with GNU calloc. This
34 matters if we are not also using the calloc module, which defines
35 HAVE_CALLOC_GNU and supports the GNU API even on non-GNU platforms. */
36 #if defined HAVE_CALLOC_GNU || defined __GLIBC__
37 enum { HAVE_GNU_CALLOC = 1 };
39 enum { HAVE_GNU_CALLOC = 0 };
42 /* Allocate N bytes of memory dynamically, with error checking. */
53 /* Change the size of an allocated block of memory P to N bytes,
54 with error checking. */
57 xrealloc (void *p, size_t n)
65 /* If P is null, allocate a block of at least *PN bytes; otherwise,
66 reallocate P so that it contains more than *PN bytes. *PN must be
67 nonzero unless P is null. Set *PN to the new block's size, and
68 return the pointer to the new block. *PN is never set to zero, and
69 the returned pointer is never null. */
72 x2realloc (void *p, size_t *pn)
74 return x2nrealloc (p, pn, 1);
77 /* Allocate S bytes of zeroed memory dynamically, with error checking.
78 There's no need for xnzalloc (N, S), since it would be equivalent
84 return memset (xmalloc (s), 0, s);
87 /* Allocate zeroed memory for N elements of S bytes, with error
88 checking. S must be nonzero. */
91 xcalloc (size_t n, size_t s)
94 /* Test for overflow, since some calloc implementations don't have
95 proper overflow checks. But omit overflow and size-zero tests if
96 HAVE_GNU_CALLOC, since GNU calloc catches overflow and never
97 returns NULL if successful. */
98 if ((! HAVE_GNU_CALLOC && xalloc_oversized (n, s))
99 || (! (p = calloc (n, s)) && (HAVE_GNU_CALLOC || n != 0)))
104 /* Clone an object P of size S, with error checking. There's no need
105 for xnmemdup (P, N, S), since xmemdup (P, N * S) works without any
106 need for an arithmetic overflow check. */
109 xmemdup (void const *p, size_t s)
111 return memcpy (xmalloc (s), p, s);
117 xstrdup (char const *string)
119 return xmemdup (string, strlen (string) + 1);