diff --git a/src/common/backend/catalog/namespace.cpp b/src/common/backend/catalog/namespace.cpp
index d6a8fde89..57c50294c 100644
--- a/src/common/backend/catalog/namespace.cpp
+++ b/src/common/backend/catalog/namespace.cpp
@@ -306,7 +306,7 @@ Oid RangeVarGetRelidExtended(const RangeVar* relation, LOCKMODE lockmode, bool m
             if (isSupportSynonym) {
                 pfree_ext(errDetail);
                 errDetail = RelnameGetRelidExtended(relation->relname, &relId, refSynOid, detailInfo);
-                if (relId != NULL && OidIsValid(relId)) {
+                if (OidIsValid(relId)) {
                     Oid namespaceId = get_rel_namespace(relId);
                     LookupExplicitNamespace(get_namespace_name(namespaceId));
                 }
diff --git a/src/gausskernel/process/postmaster/barrier_preparse.cpp b/src/gausskernel/process/postmaster/barrier_preparse.cpp
index 9f318c9a9..f7dba7fbc 100644
--- a/src/gausskernel/process/postmaster/barrier_preparse.cpp
+++ b/src/gausskernel/process/postmaster/barrier_preparse.cpp
@@ -489,8 +489,6 @@ Datum gs_get_preparse_location(PG_FUNCTION_ARGS)
     bool nulls[3] = {0};
     HeapTuple tuple;
     Datum result;
-    char location[MAXFNAMELEN * 3] = {0};
-    errno_t rc = EOK;
 
     const int COLUMN_NUM = 3;
     tupdesc = CreateTemplateTupleDesc(COLUMN_NUM, false);
diff --git a/src/lib/elog/elog.cpp b/src/lib/elog/elog.cpp
index fc33eea61..7ae7df654 100644
--- a/src/lib/elog/elog.cpp
+++ b/src/lib/elog/elog.cpp
@@ -349,7 +349,7 @@ static void remove_oldest_log(const char *prefix_name, const char *log_path, int
             rc = snprintf_s(pathname, MAXPGPATH, MAXPGPATH - 1, "%s/%s", log_path, de->d_name);
             securec_check_ss_c(rc, "\0", "\0");
             if (stat(pathname, &fst) < 0) {
-                printf(_("%s: could not stat file %s\n"), prefix_name, pathname, gs_strerror(errno));
+                printf(_("%s: could not stat file %s! %s\n"), prefix_name, pathname, gs_strerror(errno));
                 continue;
             }