netdev - [PATCH net-next] selftests: net: reuseport_addr

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Date:   Thu, 20 Dec 2018 16:29:48 -0800
From:   Peter Oskolkov <posk@...gle.com>
To:     David Miller <davem@...emloft.net>, netdev@...r.kernel.org
Cc:     Peter Oskolkov <posk.devel@...il.com>,
        Peter Oskolkov <posk@...gle.com>
Subject: [PATCH net-next] selftests: net: reuseport_addr_any: silence clang warning

Clang does not recognize that calls to error() terminate execution
and complains about uninitialized variable use that happens after calls
to error(). This noop patchset fixes this.

---
 tools/testing/selftests/net/reuseport_addr_any.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/tools/testing/selftests/net/reuseport_addr_any.c b/tools/testing/selftests/net/reuseport_addr_any.c
index 6f54d425dba9..1e49cf9acf98 100644
--- a/tools/testing/selftests/net/reuseport_addr_any.c
+++ b/tools/testing/selftests/net/reuseport_addr_any.c
@@ -60,6 +60,11 @@ static void build_rcv_fd(int family, int proto, int *rcv_fds, int count,
 		break;
 	default:
 		error(1, 0, "Unsupported family %d", family);
+		/* clang does not recognize error() above as terminating
+		 * the program, so it complains that saddr, sz are
+		 * not initialized when this code path is taken. Silence it.
+		 */
+		return;
 	}
 
 	for (i = 0; i < count; ++i) {
@@ -128,6 +133,11 @@ static int connect_and_send(int family, int proto)
 	break;
 	default:
 		error(1, 0, "Unsupported family %d", family);
+		/* clang does not recognize error() above as terminating
+		 * the program, so it complains that saddr, daddr, sz are
+		 * not initialized when this code path is taken. Silence it.
+		 */
+		return;
 	}
 
 	fd = socket(family, proto, 0);
-- 
2.20.1.415.g653613c723-goog