From: Vitaly Kuznetsov <vkuznets@redhat.com>
To: linux-hyperv@vger.kernel.org
Cc: "K. Y. Srinivasan" <kys@microsoft.com>,
Haiyang Zhang <haiyangz@microsoft.com>,
Stephen Hemminger <sthemmin@microsoft.com>,
Sasha Levin <sashal@kernel.org>,
linux-kernel@vger.kernel.org
Subject: [PATCH] Tools: hv: kvp: eliminate 'may be used uninitialized' warning
Date: Mon, 19 Aug 2019 16:44:09 +0200 [thread overview]
Message-ID: <20190819144409.13349-1-vkuznets@redhat.com> (raw)
When building hv_kvp_daemon GCC-8.3 complains:
hv_kvp_daemon.c: In function ‘kvp_get_ip_info.constprop’:
hv_kvp_daemon.c:812:30: warning: ‘ip_buffer’ may be used uninitialized in this function [-Wmaybe-uninitialized]
struct hv_kvp_ipaddr_value *ip_buffer;
this seems to be a false positive: we only use ip_buffer when
op == KVP_OP_GET_IP_INFO and it is only unset when op == KVP_OP_ENUMERATE.
Silence the warning by initializing ip_buffer to NULL.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
---
tools/hv/hv_kvp_daemon.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/hv/hv_kvp_daemon.c b/tools/hv/hv_kvp_daemon.c
index d7e06fe0270e..6d809abaf338 100644
--- a/tools/hv/hv_kvp_daemon.c
+++ b/tools/hv/hv_kvp_daemon.c
@@ -809,7 +809,7 @@ kvp_get_ip_info(int family, char *if_name, int op,
int sn_offset = 0;
int error = 0;
char *buffer;
- struct hv_kvp_ipaddr_value *ip_buffer;
+ struct hv_kvp_ipaddr_value *ip_buffer = NULL;
char cidr_mask[5]; /* /xyz */
int weight;
int i;
--
2.20.1
next reply other threads:[~2019-08-19 14:44 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-19 14:44 Vitaly Kuznetsov [this message]
2019-08-20 15:30 ` [PATCH] Tools: hv: kvp: eliminate 'may be used uninitialized' warning Sasha Levin
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