59 lines
1.5 KiB
C
59 lines
1.5 KiB
C
/* calloc() function that is glibc compatible.
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This wrapper function is required at least on Tru64 UNIX 5.1 and mingw.
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Copyright (C) 2004-2007, 2009-2024 Free Software Foundation, Inc.
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This file is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as
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published by the Free Software Foundation; either version 2.1 of the
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License, or (at your option) any later version.
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This file 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
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>. */
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/* written by Jim Meyering and Bruno Haible */
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#include <config.h>
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/* Specification. */
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#include <stdlib.h>
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#include <errno.h>
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#include <stdckdint.h>
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/* Call the system's calloc below. */
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#undef calloc
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/* Allocate and zero-fill an NxS-byte block of memory from the heap,
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even if N or S is zero. */
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void *
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rpl_calloc (size_t n, size_t s)
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{
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#if !HAVE_MALLOC_0_NONNULL
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if (n == 0 || s == 0)
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n = s = 1;
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#endif
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#if !HAVE_MALLOC_PTRDIFF
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ptrdiff_t signed_n;
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if (ckd_mul (&signed_n, n, s))
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{
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errno = ENOMEM;
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return NULL;
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}
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#endif
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void *result = calloc (n, s);
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#if !HAVE_MALLOC_POSIX
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if (result == NULL)
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errno = ENOMEM;
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#endif
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return result;
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}
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