diff --git a/include/os/osMath.h b/include/os/osMath.h
index b0c75f4dd7bf8b9ea64199200c5f719c20944bc9..74973d9bb22168ba99b6eb48dd9f98976c77c17c 100644
--- a/include/os/osMath.h
+++ b/include/os/osMath.h
@@ -20,6 +20,12 @@
 extern "C" {
 #endif
 
+// If the error is in a third-party library, place this header file under the third-party library header file.
+// When you want to use this feature, you should find or add the same function in the following sectio
+#ifndef ALLOW_FORBID_FUNC
+#define qsort  QSORT_FUNC_TAOS_FORBID
+#endif
+
 #define TPOW2(x) ((x) * (x))
 #define TABS(x) ((x) > 0 ? (x) : -(x))
 
diff --git a/include/os/osString.h b/include/os/osString.h
index 1b518f9b81ee6879b4dde6524ca9bd920d31b0e2..3a4ff18694489c995c8849bcd9c39a14637472c2 100644
--- a/include/os/osString.h
+++ b/include/os/osString.h
@@ -67,7 +67,7 @@ bool    taosMbsToUcs4(const char *mbs, size_t mbs_len, TdUcs4 *ucs4, int32_t ucs
 int32_t tasoUcs4Compare(TdUcs4 *f1_ucs4, TdUcs4 *f2_ucs4, int32_t bytes);
 TdUcs4* tasoUcs4Copy(TdUcs4 *target_ucs4, TdUcs4 *source_ucs4, int32_t len_ucs4);
 bool    taosValidateEncodec(const char *encodec);
-int32_t taosHexEncode(const char *src, char *dst, int32_t len);
+int32_t taosHexEncode(const unsigned char *src, char *dst, int32_t len);
 int32_t taosHexDecode(const char *src, char *dst, int32_t len);
 
 int32_t taosWcharWidth(TdWchar wchar);
diff --git a/source/dnode/mnode/impl/src/mndTrans.c b/source/dnode/mnode/impl/src/mndTrans.c
index b933a4521a615308455a00857cdcfc3dbb4fb270..ea92b2f0e654499327bc88a29154f316cbc21725 100644
--- a/source/dnode/mnode/impl/src/mndTrans.c
+++ b/source/dnode/mnode/impl/src/mndTrans.c
@@ -1026,7 +1026,7 @@ static int32_t mndTransExecNullMsg(SMnode *pMnode, STrans *pTrans, STransAction
   pTrans->lastAction = pAction->id;
   pTrans->lastMsgType = pAction->msgType;
   pTrans->lastEpset = pAction->epSet;
-  pTrans->lastErrorNo == 0;
+  pTrans->lastErrorNo = 0;
   return 0;
 }
 
diff --git a/source/os/src/osString.c b/source/os/src/osString.c
index e6904f19634018180da9ea25a226a0545db67cf1..efa65fe191bcb63dac7ebba70cc3ee32d2003640 100644
--- a/source/os/src/osString.c
+++ b/source/os/src/osString.c
@@ -196,7 +196,7 @@ int32_t taosUcs4len(TdUcs4 *ucs4) {
 }
 
 //dst buffer size should be at least 2*len + 1
-int32_t taosHexEncode(const char *src, char *dst, int32_t len) {
+int32_t taosHexEncode(const unsigned char *src, char *dst, int32_t len) {
   if (!dst) {
     return -1;
   }