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| author | Cameron Katri <me@cameronkatri.com> | 2021-02-10 18:13:31 -0500 |
|---|---|---|
| committer | Cameron Katri <me@cameronkatri.com> | 2021-02-10 19:00:38 -0500 |
| commit | 9768b265bd097e561103188bb97f64ef26c6cee1 (patch) | |
| tree | d31efcee098e5f18f411f72c26782ebfe53523b5 /pw/reallocarray.c | |
| parent | ec831d9055a20b69cb9a7300990b8e4414cbd474 (diff) | |
| download | pw-darwin-9768b265bd097e561103188bb97f64ef26c6cee1.tar.gz pw-darwin-9768b265bd097e561103188bb97f64ef26c6cee1.zip | |
New Makefile, freebsd reallocarray.c, freebsd strtonum for 12/13 compat, delete tests
Diffstat (limited to 'pw/reallocarray.c')
| -rw-r--r-- | pw/reallocarray.c | 51 |
1 files changed, 41 insertions, 10 deletions
diff --git a/pw/reallocarray.c b/pw/reallocarray.c index 7310133..e1e9b7c 100644 --- a/pw/reallocarray.c +++ b/pw/reallocarray.c @@ -1,11 +1,42 @@ -#include "reallocarray.h" - -#define MUL_NO_OVERFLOW ((size_t)1 << (sizeof(size_t) * 4)) -void *reallocarray(void *optr, size_t nmemb, size_t size) { - if ((nmemb >= MUL_NO_OVERFLOW || size >= MUL_NO_OVERFLOW) && - nmemb > 0 && SIZE_MAX / nmemb < size) { - errno = ENOMEM; - return NULL; - } - return realloc(optr, size * nmemb); +/* $OpenBSD: reallocarray.c,v 1.2 2014/12/08 03:45:00 bcook Exp $ */ +/* + * Copyright (c) 2008 Otto Moerbeek <otto@drijf.net> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/types.h> +#include <errno.h> +#include <stdint.h> +#include <stdlib.h> + +/* + * This is sqrt(SIZE_MAX+1), as s1*s2 <= SIZE_MAX + * if both s1 < MUL_NO_OVERFLOW and s2 < MUL_NO_OVERFLOW + */ +#define MUL_NO_OVERFLOW ((size_t)1 << (sizeof(size_t) * 4)) + +void * +reallocarray(void *optr, size_t nmemb, size_t size) +{ + + if ((nmemb >= MUL_NO_OVERFLOW || size >= MUL_NO_OVERFLOW) && + nmemb > 0 && SIZE_MAX / nmemb < size) { + errno = ENOMEM; + return (NULL); + } + return (realloc(optr, size * nmemb)); } |
