bc/dc/patch: make some use of reallocarray(3).

reallocarray(3) is a non portable extension from OpenBSD. Given that it is
already in FreeBSD, make easier future merges by adopting in some cases
where the code has some shared heritage with OpenBSD.

Obtained from:	OpenBSD

5 files changed, 13 insertions, 13 deletions

diff --git a/usr.bin/dc/bcode.c b/usr.bin/dc/bcode.c
index e6a980e4ac23..fc83282b4e01 100644
--- a/usr.bin/dc/bcode.c
+++ b/usr.bin/dc/bcode.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: bcode.c,v 1.45 2012/11/07 11:06:14 otto Exp $	*/
+/*	$OpenBSD: bcode.c,v 1.46 2014/10/08 03:59:56 doug Exp $	*/
 
 /*
  * Copyright (c) 2003, Otto Moerbeek <otto@drijf.net>
@@ -1709,7 +1709,7 @@ eval_string(char *p)
 	if (bmachine.readsp == bmachine.readstack_sz - 1) {
 		size_t newsz = bmachine.readstack_sz * 2;
 		struct source *stack;
-		stack = realloc(bmachine.readstack, newsz *
+		stack = reallocarray(bmachine.readstack, newsz,
 		    sizeof(struct source));
 		if (stack == NULL)
 			err(1, "recursion too deep");
diff --git a/usr.bin/dc/extern.h b/usr.bin/dc/extern.h
index 4abf06355a3a..477fcea9eb61 100644
--- a/usr.bin/dc/extern.h
+++ b/usr.bin/dc/extern.h
@@ -1,5 +1,5 @@
 /*	$FreeBSD$						*/
-/*	$OpenBSD: extern.h,v 1.3 2006/01/16 08:09:25 otto Exp $	*/
+/*	$OpenBSD: extern.h,v 1.4 2014/12/01 13:13:00 deraadt Exp $	*/
 
 /*
  * Copyright (c) 2003, Otto Moerbeek <otto@drijf.net>
@@ -35,7 +35,7 @@ struct number	*new_number(void);
 void		 free_number(struct number *);
 struct number	*dup_number(const struct number *);
 void		*bmalloc(size_t);
-void		*brealloc(void *, size_t);
+void		*breallocarray(void *, size_t, size_t);
 char		*bstrdup(const char *p);
 void		 bn_check(int);
 void		 bn_checkp(const void *);
diff --git a/usr.bin/dc/inout.c b/usr.bin/dc/inout.c
index 740fb35bae7f..bd675f51023a 100644
--- a/usr.bin/dc/inout.c
+++ b/usr.bin/dc/inout.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: inout.c,v 1.17 2012/11/07 11:06:14 otto Exp $	*/
+/*	$OpenBSD: inout.c,v 1.18 2014/12/01 13:13:00 deraadt Exp $	*/
 
 /*
  * Copyright (c) 2003, Otto Moerbeek <otto@drijf.net>
@@ -261,7 +261,7 @@ read_string(struct source *src)
 			escape = false;
 			if (i == sz) {
 				new_sz = sz * 2;
-				p = brealloc(p, new_sz + 1);
+				p = breallocarray(p, 1, new_sz + 1);
 				sz = new_sz;
 			}
 			p[i++] = ch;
diff --git a/usr.bin/dc/mem.c b/usr.bin/dc/mem.c
index 78fb429e2604..e83a70ad5ec8 100644
--- a/usr.bin/dc/mem.c
+++ b/usr.bin/dc/mem.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: mem.c,v 1.5 2009/10/27 23:59:37 deraadt Exp $	*/
+/*	$OpenBSD: mem.c,v 1.6 2014/12/01 13:13:00 deraadt Exp $	*/
 
 /*
  * Copyright (c) 2003, Otto Moerbeek <otto@drijf.net>
@@ -72,11 +72,11 @@ bmalloc(size_t sz)
 }
 
 void *
-brealloc(void *p, size_t sz)
+breallocarray(void *p, size_t nmemb, size_t size)
 {
 	void *q;
 
-	q = realloc(p, sz);
+	q = reallocarray(p, nmemb, size);
 	if (q == NULL)
 		err(1, NULL);
 	return (q);
diff --git a/usr.bin/dc/stack.c b/usr.bin/dc/stack.c
index 33082c77ec04..ba7c7e4a589b 100644
--- a/usr.bin/dc/stack.c
+++ b/usr.bin/dc/stack.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: stack.c,v 1.12 2014/11/26 15:05:51 otto Exp $	*/
+/*	$OpenBSD: stack.c,v 1.13 2014/12/01 13:13:00 deraadt Exp $	*/
 
 /*
  * Copyright (c) 2003, Otto Moerbeek <otto@drijf.net>
@@ -139,8 +139,8 @@ stack_grow(struct stack *stack)
 
 	if (++stack->sp == stack->size) {
 		new_size = stack->size * 2 + 1;
-		stack->stack = brealloc(stack->stack,
-		    new_size * sizeof(*stack->stack));
+		stack->stack = breallocarray(stack->stack,
+		    new_size, sizeof(*stack->stack));
 		stack->size = new_size;
 	}
 }
@@ -313,7 +313,7 @@ array_grow(struct array *array, size_t newsize)
 {
 	size_t i;
 
-	array->data = brealloc(array->data, newsize * sizeof(*array->data));
+	array->data = breallocarray(array->data, newsize, sizeof(*array->data));
 	for (i = array->size; i < newsize; i++) {
 		array->data[i].type = BCODE_NONE;
 		array->data[i].array = NULL;