Add OpenBSD copyright for reallocarray

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

1 files changed, 35 insertions, 17 deletions

diff --git a/usr.bin/m4/misc.c b/usr.bin/m4/misc.c
index 1959448..30fb690 100644
--- a/usr.bin/m4/misc.c
+++ b/usr.bin/m4/misc.c
@@ -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);
+}