diff --git a/examples/secgear_ds/enclave/secgear_ds.cpp b/examples/secgear_ds/enclave/secgear_ds.cpp
old mode 100644
new mode 100755
index 8c7c82d399cc9fcde293667e9ca0171482d52bb6..afc4b3e6ec8fc7c2f6a8c549952c83939d3385cd
--- a/examples/secgear_ds/enclave/secgear_ds.cpp
+++ b/examples/secgear_ds/enclave/secgear_ds.cpp
@@ -177,8 +177,8 @@ int Delete_(int32_t k)
 }
 int Delete(int32_t k) 
 {
-    int index = Search(k);
-    int len = key_list.size();
+    //int index = Search(k);
+    //int len = key_list.size();
     return 0;
 }
 // 删除接口
diff --git a/examples/secgear_ds/host/main.cpp b/examples/secgear_ds/host/main.cpp
old mode 100644
new mode 100755
index ad0f509cfc5cdec82fca70e0112d866dd7ef6e84..fbe635d2ddaed67ffe15834b884119505843dfb5
--- a/examples/secgear_ds/host/main.cpp
+++ b/examples/secgear_ds/host/main.cpp
@@ -434,7 +434,7 @@ int main(int argc, char* argv[])
 {
     int retval = 0;
     char *path = PATH;
-    char buf[BUF_LEN];
+    //char buf[BUF_LEN];
     // return value status
     cc_enclave_result_t res;
     // enclave context
diff --git a/examples/secgear_kms/enclave/enclave_kms.cpp b/examples/secgear_kms/enclave/enclave_kms.cpp
old mode 100644
new mode 100755
index 6e70fd4c77b4f3af0ea59c11f4b8c2b1ebc68235..d6175daf7cf77be64e99613a81833762c28f572a
--- a/examples/secgear_kms/enclave/enclave_kms.cpp
+++ b/examples/secgear_kms/enclave/enclave_kms.cpp
@@ -1114,7 +1114,7 @@ int sm2_decrypt(const unsigned char *cipher_x, const unsigned char *cipher_y,
 int sm2_sign(const unsigned char *message, const int message_len,
              const unsigned char *pri_key, uint8_t *sign_r, uint8_t *sign_s) {
     int ret_val = Err_INTERNAL;
-    unsigned char digest[32];
+    //unsigned char digest[32];
 
     EC_KEY *ec_key = nullptr;
     BIGNUM *bn_private_key = nullptr;
@@ -1178,7 +1178,7 @@ int sm2_verify(const unsigned char *message, const int message_len,
 
     unsigned char raw_x[32];
     unsigned char raw_y[32];
-    unsigned char der_sig[128];
+    //unsigned char der_sig[128];
     int der_size = 0;
 
     ec_key = EC_KEY_new_by_curve_name(NID_sm2);