From 6764a38d863103f6ca66bb05fbbe2be2225f973e Mon Sep 17 00:00:00 2001
From: Michael Forney <mforney@mforney.org>
Date: Sun, 3 Oct 2021 02:22:09 -0700
Subject: util: Don't error on NULL from malloc if requested size was 0

It is implementation-defined whether malloc returns NULL or some
pointer when the size is 0, so we don't want to error out if the
implementation chose NULL.
---
 util.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/util.c b/util.c
index 63511a3..724752d 100644
--- a/util.c
+++ b/util.c
@@ -58,7 +58,7 @@ void *
 xreallocarray(void *buf, size_t n, size_t m)
 {
 	buf = reallocarray(buf, n, m);
-	if (!buf)
+	if (!buf && n && m)
 		fatal("reallocarray:");
 
 	return buf;
@@ -70,7 +70,7 @@ xmalloc(size_t len)
 	void *buf;
 
 	buf = malloc(len);
-	if (!buf)
+	if (!buf && len)
 		fatal("malloc:");
 
 	return buf;
-- 
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