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package/libubox: fix build with gcc 10

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Fixes:
 - http://autobuild.buildroot.org/results/aef10cc43f6c34f106624588ae2a1131520ee066

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
This commit is contained in:
Fabrice Fontaine 2020-08-22 11:28:16 +02:00 committed by Thomas Petazzoni
parent 1c979b57ef
commit ba5a463add
1 changed files with 47 additions and 0 deletions
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47
package/libubox/0001-blobmsg-fix-array-out-of-bounds-GCC-10-warning.patch Normal file
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@ -0,0 +1,47 @@
From eb7eb6393d47a918c420f5b287946dbd6c0d5f57 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Petr=20=C5=A0tetiar?= <ynezz@true.cz>
Date: Wed, 25 Dec 2019 10:27:59 +0100
Subject: [PATCH] blobmsg: fix array out of bounds GCC 10 warning
MIME-Version: 1.0
Content-Type: text/plain; charset=utf8
Content-Transfer-Encoding: 8bit
Fixes following warning reported by GCC 10.0.0 20191203:
blobmsg.c:234:2: error: 'strcpy' offset 6 from the object at 'attr' is out of the bounds of referenced subobject 'name' with type 'uint8_t[0]' {aka 'unsigned char[0]'} at offset 6 [-Werror=array-bounds]
234 | strcpy((char *) hdr->name, (const char *)name);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from blobmsg.c:16:
blobmsg.h:42:10: note: subobject 'name' declared here
42 | uint8_t name[];
| ^~~~
Reported-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Petr Å tetiar <ynezz@true.cz>
[Retrieved from:
https://git.openwrt.org/?p=project/libubox.git;a=commit;h=eb7eb6393d47a918c420f5b287946dbd6c0d5f57]
Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
---
blobmsg.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/blobmsg.c b/blobmsg.c
index 48dba81..37821c3 100644
--- a/blobmsg.c
+++ b/blobmsg.c
@@ -240,7 +240,10 @@ blobmsg_new(struct blob_buf *buf, int type, const char *name, int payload_len, v
attr->id_len |= be32_to_cpu(BLOB_ATTR_EXTENDED);
hdr = blob_data(attr);
hdr->namelen = cpu_to_be16(namelen);
- strcpy((char *) hdr->name, (const char *)name);
+
+ memcpy(hdr->name, name, namelen);
+ hdr->name[namelen] = '\0';
+
pad_end = *data = blobmsg_data(attr);
pad_start = (char *) &hdr->name[namelen];
if (pad_start < pad_end)
--
2.20.1