From: tsoome <tsoome@FreeBSD.org>
Date: Mon, 16 Sep 2019 20:28:08 +0000 (+0000)
Subject: loader: Malloc(0) should return NULL.
X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=1a18c8df606848d6d3c978949946218e34090225;p=freebsd.git

loader: Malloc(0) should return NULL.

We really should not allocate anything with size 0.
---

diff --git a/stand/libsa/zalloc_malloc.c b/stand/libsa/zalloc_malloc.c
index b9a295fb385..2cc14d80641 100644
--- a/stand/libsa/zalloc_malloc.c
+++ b/stand/libsa/zalloc_malloc.c
@@ -55,6 +55,9 @@ Malloc(size_t bytes, const char *file, int line)
 {
     Guard *res;
 
+    if (bytes == 0)
+	return (NULL);
+
 #ifdef USEENDGUARD
     bytes += MALLOCALIGN + 1;
 #else