+/* RFC 5424 defines specific values for each syslog level. Normally LOG_* use
+ * the same values. Verify that in fact they're the same. If we get assertion
+ * failures here then we need to define a separate rfc5424_levels[] array. */
+#define VLOG_LEVEL(NAME, SYSLOG_LEVEL, RFC5424) \
+ BUILD_ASSERT_DECL(SYSLOG_LEVEL == RFC5424);
+VLOG_LEVELS
+#undef VLOG_LEVELS
+
+/* Similarly, RFC 5424 defines the local0 facility with the value ordinarily
+ * used for LOG_LOCAL0. */
+BUILD_ASSERT_DECL(LOG_LOCAL0 == (16 << 3));
+