MFC r317265:

lib: initial use of reallocarray(3).

Make some use of reallocarray, attempting to limit it to cases where the
parameters are unsigned and there is some theoretical chance of overflow.

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/libutil/pw_util.c b/lib/libutil/pw_util.c
index 0c34e67..627d79b 100644
--- a/lib/libutil/pw_util.c
+++ b/lib/libutil/pw_util.c
@@ -468,7 +468,7 @@ pw_copy(int ffd, int tfd, const struct passwd *pw, struct passwd *old_pw)
 			if (eof)
 				break;
 			while ((size_t)(q - p) >= size) {
-				if ((tmp = realloc(buf, size * 2)) == NULL) {
+				if ((tmp = reallocarray(buf, 2, size)) == NULL) {
 					warnx("passwd line too long");
 					goto err;
 				}