diff --git a/tests/examples/c/apitest.c b/tests/examples/c/apitest.c
index 623a51ff37f402afe4fb9b6b7c08af93f899f0ed..add4b11d6bb9fd91e2e4b4e63e2a2f6231ba35d4 100644
--- a/tests/examples/c/apitest.c
+++ b/tests/examples/c/apitest.c
@@ -448,7 +448,7 @@ void verify_prepare2(TAOS* taos) {
       double f8[10];
       char bin[10][40];
       char blob[10][80];
-  } v = {0};
+  } v;
 
   int32_t *t8_len = malloc(sizeof(int32_t) * 10);
   int32_t *t16_len = malloc(sizeof(int32_t) * 10);
@@ -688,7 +688,7 @@ void verify_prepare3(TAOS* taos) {
       double f8[10];
       char bin[10][40];
       char blob[10][80];
-  } v = {0};
+  } v;
 
   int32_t *t8_len = malloc(sizeof(int32_t) * 10);
   int32_t *t16_len = malloc(sizeof(int32_t) * 10);
diff --git a/tests/script/api/batchprepare.c b/tests/script/api/batchprepare.c
index 92253be78c89e7f6420cead370e2e365534f152b..55eb62d9bb4272fe7ab85a96561ebd9c87343ed0 100644
--- a/tests/script/api/batchprepare.c
+++ b/tests/script/api/batchprepare.c
@@ -1046,6 +1046,7 @@ int stmt_funcb_autoctb1(TAOS_STMT *stmt) {
   free(params);
   free(is_null);
   free(no_null);
+  free(tags);
 
   return 0;
 }
@@ -1258,6 +1259,7 @@ int stmt_funcb_autoctb2(TAOS_STMT *stmt) {
   free(params);
   free(is_null);
   free(no_null);
+  free(tags);
 
   return 0;
 }
@@ -1446,6 +1448,7 @@ int stmt_funcb_autoctb3(TAOS_STMT *stmt) {
   free(params);
   free(is_null);
   free(no_null);
+  free(tags);
 
   return 0;
 }
@@ -1635,6 +1638,7 @@ int stmt_funcb_autoctb_e1(TAOS_STMT *stmt) {
   free(params);
   free(is_null);
   free(no_null);
+  free(tags);
 
   return 0;
 }
@@ -1849,6 +1853,7 @@ int stmt_funcb_autoctb_e2(TAOS_STMT *stmt) {
   free(params);
   free(is_null);
   free(no_null);
+  free(tags);
 
   return 0;
 }