Use reallocarray() if it is available in libc or libbsd

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>

1 files changed, 10 insertions, 2 deletions

diff --git a/fslsfonts.c b/fslsfonts.c
index 3608e5a..ce8f7ab 100644
--- a/fslsfonts.c
+++ b/fslsfonts.c
@@ -53,6 +53,14 @@ in this Software without prior written authorization from The Open Group.
 #include <stdlib.h>
 #include <assert.h>
 
+#ifdef HAVE_BSD_STDLIB_H
+#include <bsd/stdlib.h>
+#endif
+
+#ifndef HAVE_REALLOCARRAY
+#define reallocarray(old, num, size) realloc(old, (num) * (size))
+#endif
+
 #ifndef N_START
 #define N_START 1000		/* Maximum # of fonts to start with */
 #endif
@@ -267,8 +275,8 @@ get_list(const char *pattern)
     else {
 	FontList *old_list = font_list;
 
-	font_list = realloc(old_list, (font_cnt + (unsigned) available)
-			    * sizeof(FontList));
+	font_list = reallocarray(old_list, (font_cnt + (unsigned) available),
+                                 sizeof(FontList));
 
 	if (font_list == NULL) {
 	    free(old_list);