From 95210bb3961727e034b99912a65700f6ace49753 Mon Sep 17 00:00:00 2001
From: Omar Polo <op@omarpolo.com>
Date: Thu, 21 Jan 2021 16:14:01 +0000
Subject: [PATCH] use recallocarray

it also does an overflow check on multiplication, other than being
more readable.
---
 mime.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/mime.c b/mime.c
index f389aa8..81bc2ef 100644
--- a/mime.c
+++ b/mime.c
@@ -35,11 +35,15 @@ init_mime(struct mime *mime)
 void
 add_mime(struct mime *mime, const char *mt, const char *ext)
 {
+	size_t oldcap;
+
 	if (mime->len == mime->cap) {
+		oldcap = mime->cap;
 		mime->cap *= 1.5;
-		mime->t = realloc(mime->t, mime->cap * sizeof(struct etm));
+		mime->t = recallocarray(mime->t, oldcap, mime->cap,
+		    sizeof(struct etm));
 		if (mime->t == NULL)
-			fatal("realloc: %s", strerror(errno));
+			err(1, "recallocarray");
 	}
 
 	mime->t[mime->len].mime = mt;