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) 1990-2000, 2002-2006, 2008-2013 Free Software Foundation, Inc.
7 This program is free software: you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
22 #define XALLOC_INLINE _GL_EXTERN_INLINE
29 /* 1 if calloc is known to be compatible with GNU calloc. This
30 matters if we are not also using the calloc module, which defines
31 HAVE_CALLOC_GNU and supports the GNU API even on non-GNU platforms. */
32 #if defined HAVE_CALLOC_GNU || (defined __GLIBC__ && !defined __UCLIBC__)
33 enum { HAVE_GNU_CALLOC = 1 };
35 enum { HAVE_GNU_CALLOC = 0 };
38 /* Allocate N bytes of memory dynamically, with error checking. */
49 /* Change the size of an allocated block of memory P to N bytes,
50 with error checking. */
53 xrealloc (void *p, size_t n)
57 /* The GNU and C99 realloc behaviors disagree here. Act like
58 GNU, even if the underlying realloc is C99. */
69 /* If P is null, allocate a block of at least *PN bytes; otherwise,
70 reallocate P so that it contains more than *PN bytes. *PN must be
71 nonzero unless P is null. Set *PN to the new block's size, and
72 return the pointer to the new block. *PN is never set to zero, and
73 the returned pointer is never null. */
76 x2realloc (void *p, size_t *pn)
78 return x2nrealloc (p, pn, 1);
81 /* Allocate S bytes of zeroed memory dynamically, with error checking.
82 There's no need for xnzalloc (N, S), since it would be equivalent
88 return memset (xmalloc (s), 0, s);
91 /* Allocate zeroed memory for N elements of S bytes, with error
92 checking. S must be nonzero. */
95 xcalloc (size_t n, size_t s)
98 /* Test for overflow, since some calloc implementations don't have
99 proper overflow checks. But omit overflow and size-zero tests if
100 HAVE_GNU_CALLOC, since GNU calloc catches overflow and never
101 returns NULL if successful. */
102 if ((! HAVE_GNU_CALLOC && xalloc_oversized (n, s))
103 || (! (p = calloc (n, s)) && (HAVE_GNU_CALLOC || n != 0)))
108 /* Clone an object P of size S, with error checking. There's no need
109 for xnmemdup (P, N, S), since xmemdup (P, N * S) works without any
110 need for an arithmetic overflow check. */
113 xmemdup (void const *p, size_t s)
115 return memcpy (xmalloc (s), p, s);
121 xstrdup (char const *string)
123 return xmemdup (string, strlen (string) + 1);