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Add OpenBSD copyright for reallocarray

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Move the function at the bottom of the misc.c file to clearly state the
copyright only stand for this function

PR:		198484
Submitted by:	logan@elandsys.com
This commit is contained in:
bapt 2015-03-10 14:22:28 +00:00
parent 6bbfdd570a
commit eb665e55b8
1 changed files with 35 additions and 17 deletions
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52
usr.bin/m4/misc.c
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@ -64,6 +64,7 @@ unsigned char *bbase[MAXINP]; /* the base for each ilevel */
unsigned char *bp; /* first available character */
unsigned char *endpbb; /* end of push-back buffer */
static void *reallocarray(void *, size_t, size_t);
/*
* find the index of second str in the first str.
@ -352,23 +353,6 @@ xrealloc(void *old, size_t n, const char *fmt, ...)
return p;
}
/*
* 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 (1UL << (sizeof(size_t) * 4))
static 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);
}
void *
xreallocarray(void *old, size_t s1, size_t s2, const char *fmt, ...)
{
@ -483,3 +467,37 @@ dump_buffer(FILE *f, size_t m)
for (s = bp; s-buf > (long)m;)
fputc(*--s, f);
}
/* $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.
*/
/*
* 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);
}