Added workaround for gcc 6.3.0 (#28184)

test/core/address_utils/sockaddr_utils_test.cc

@@ -182,16 +182,18 @@ TEST(SockAddrUtilsTest, SockAddrToString) {
             "[2001:db8::1%25101]:12345");
   EXPECT_EQ(grpc_sockaddr_to_uri(&input6), "ipv6:[2001:db8::1%25101]:12345");
 
-  input6 = MakeAddr6(kMapped, sizeof(kMapped));
-  EXPECT_EQ(grpc_sockaddr_to_string(&input6, false),
+  grpc_resolved_address input6x = MakeAddr6(kMapped, sizeof(kMapped));
+  EXPECT_EQ(grpc_sockaddr_to_string(&input6x, false),
             "[::ffff:192.0.2.1]:12345");
-  EXPECT_EQ(grpc_sockaddr_to_string(&input6, true), "192.0.2.1:12345");
-  EXPECT_EQ(grpc_sockaddr_to_uri(&input6), "ipv4:192.0.2.1:12345");
-
-  input6 = MakeAddr6(kNotQuiteMapped, sizeof(kNotQuiteMapped));
-  EXPECT_EQ(grpc_sockaddr_to_string(&input6, false), "[::fffe:c000:263]:12345");
-  EXPECT_EQ(grpc_sockaddr_to_string(&input6, true), "[::fffe:c000:263]:12345");
-  EXPECT_EQ(grpc_sockaddr_to_uri(&input6), "ipv6:[::fffe:c000:263]:12345");
+  EXPECT_EQ(grpc_sockaddr_to_string(&input6x, true), "192.0.2.1:12345");
+  EXPECT_EQ(grpc_sockaddr_to_uri(&input6x), "ipv4:192.0.2.1:12345");
+
+  grpc_resolved_address input6y =
+      MakeAddr6(kNotQuiteMapped, sizeof(kNotQuiteMapped));
+  EXPECT_EQ(grpc_sockaddr_to_string(&input6y, false),
+            "[::fffe:c000:263]:12345");
+  EXPECT_EQ(grpc_sockaddr_to_string(&input6y, true), "[::fffe:c000:263]:12345");
+  EXPECT_EQ(grpc_sockaddr_to_uri(&input6y), "ipv6:[::fffe:c000:263]:12345");
 
   grpc_resolved_address phony;
   memset(&phony, 0, sizeof(phony));