From: Karel Zak <kzak@redhat.com>
Date: Thu, 1 Oct 2020 11:23:34 +0000 (+0200)
Subject: lib/buffer: make it robust for static analyzers [coverity scan]
X-Git-Tag: v2.37-rc1~447
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=f831651e3abe5eef3eaf6c5148268a3358705a8d;p=thirdparty%2Futil-linux.git

lib/buffer: make it robust for static analyzers [coverity scan]

Signed-off-by: Karel Zak <kzak@redhat.com>
---

diff --git a/lib/buffer.c b/lib/buffer.c
index d3dc243cab..258c892d52 100644
--- a/lib/buffer.c
+++ b/lib/buffer.c
@@ -81,6 +81,9 @@ int ul_buffer_append_data(struct ul_buffer *buf, const char *data, size_t sz)
 		if (rc)
 			return rc;
 	}
+	if (!buf->end)
+		return -EINVAL;	/* make static analyzers happy */
+
 	memcpy(buf->end, data, sz);
 	buf->end += sz;
 	*buf->end = '\0';	/* make sure it's terminated */