diff --git a/src/query/src/queryExecutor.c b/src/query/src/queryExecutor.c
index e7b13994245dd43eac01685c5d0d2500bd82b643..9cb2dcd6c69a7f85570808b9dfdce48002ce069d 100644
--- a/src/query/src/queryExecutor.c
+++ b/src/query/src/queryExecutor.c
@@ -924,7 +924,7 @@ static void blockwiseApplyAllFunctions(SQueryRuntimeEnv *pRuntimeEnv, SDataStati
 
     STimeWindow win = getActiveTimeWindow(pWindowResInfo, ts, pQuery);
     if (setWindowOutputBufByKey(pRuntimeEnv, pWindowResInfo, pDataBlockInfo->sid, &win) != TSDB_CODE_SUCCESS) {
-      return 0;
+      return;
     }
 
     TSKEY   ekey = reviseWindowEkey(pQuery, &win);
diff --git a/src/util/inc/tutil.h b/src/util/inc/tutil.h
index b7877b4307512ede1b5e2433d4052a28eb008ba4..c4c802a68881107da8a09044ea4eb4aa206c9340 100644
--- a/src/util/inc/tutil.h
+++ b/src/util/inc/tutil.h
@@ -121,11 +121,7 @@ int64_t strnatoi(char *num, int32_t len);
 
 char* strreplace(const char* str, const char* pattern, const char* rep);
 
-#define POW2(x) ((x) * (x))
-
-int32_t strdequote(char *src);
-
-char *paGetToken(char *src, size_t maxLen, char **token, int32_t *tokenLen);
+char *paGetToken(char *src, char **token, int32_t *tokenLen);
 
 void taosMsleep(int32_t mseconds);
 
@@ -133,8 +129,6 @@ int32_t taosByteArrayToHexStr(char bytes[], int32_t len, char hexstr[]);
 
 int32_t taosHexStrToByteArray(char hexstr[], char bytes[]);
 
-int64_t str2int64(char *str);
-
 int32_t taosFileRename(char *fullPath, char *suffix, char delimiter, char **dstPath);
 
 /**
diff --git a/src/util/src/tglobalcfg.c b/src/util/src/tglobalcfg.c
index a4c034c48db81b1e49e6b67ab9d7c56f526380c9..8ce4530dbf997b6673d4e8cdd903428ea0a07ddc 100644
--- a/src/util/src/tglobalcfg.c
+++ b/src/util/src/tglobalcfg.c
@@ -874,12 +874,13 @@ void tsReadGlobalLogConfig() {
     olen = vlen = 0;
 
     getline(&line, &len, fp);
-
-    paGetToken(line, len, &option, &olen);
+    line[len - 1] = 0;
+    
+    paGetToken(line, &option, &olen);
     if (olen == 0) continue;
     option[olen] = 0;
 
-    paGetToken(option + olen + 1, len, &value, &vlen);
+    paGetToken(option + olen + 1, &value, &vlen);
     if (vlen == 0) continue;
     value[vlen] = 0;
 
@@ -911,18 +912,19 @@ bool tsReadGlobalConfig() {
       olen = vlen = 0;
 
       getline(&line, &len, fp);
-
-      paGetToken(line, len, &option, &olen);
+      line[len - 1] = 0;
+      
+      paGetToken(line, &option, &olen);
       if (olen == 0) continue;
       option[olen] = 0;
 
-      paGetToken(option + olen + 1, len, &value, &vlen);
+      paGetToken(option + olen + 1, &value, &vlen);
       if (vlen == 0) continue;
       value[vlen] = 0;
 
       // For dataDir, the format is:
       // dataDir    /mnt/disk1    0
-      paGetToken(value + vlen + 1, len, &value1, &vlen1);
+      paGetToken(value + vlen + 1, &value1, &vlen1);
       
       tsReadConfigOption(option, value);
     }
@@ -1005,11 +1007,10 @@ int tsCfgDynamicOptions(char *msg) {
   int   olen, vlen, code = 0;
   int   vint = 0;
 
-  size_t len = 120;
-  paGetToken(msg, len, &option, &olen);
+  paGetToken(msg, &option, &olen);
   if (olen == 0) return TSDB_CODE_INVALID_MSG_CONTENT;
 
-  paGetToken(option + olen + 1, len, &value, &vlen);
+  paGetToken(option + olen + 1, &value, &vlen);
   if (vlen == 0)
     vint = 135;
   else {
diff --git a/src/util/src/tutil.c b/src/util/src/tutil.c
index ba06d73352c4e372574dc749079cfcf6f9583e07..5f4c90327992ed523ede1491c8a2878ea5a6d9d2 100644
--- a/src/util/src/tutil.c
+++ b/src/util/src/tutil.c
@@ -164,9 +164,8 @@ char* strtolower(char *dst, const char *src) {
   return dst;
 }
 
-char *paGetToken(char *string, size_t maxLen, char **token, int32_t *tokenLen) {
+char *paGetToken(char *string, char **token, int32_t *tokenLen) {
   char quote = 0;
-  char* start = string;
   
   while (*string != 0) {
     if (*string == ' ' || *string == '\t') {
@@ -183,7 +182,7 @@ char *paGetToken(char *string, size_t maxLen, char **token, int32_t *tokenLen) {
 
   *token = string;
 
-  while (*string != 0 && *string != '\n' && (string - start < maxLen)) {
+  while (*string != 0) {
     if (*string == '@' && quote) {
       //*string = 0;
       ++string;
@@ -337,7 +336,7 @@ int32_t taosByteArrayToHexStr(char bytes[], int32_t len, char hexstr[]) {
   char    hexval[16] = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'};
 
   for (i = 0; i < len; i++) {
-    hexstr[i * 2] = hexval[((bytes[i] >> 4) & 0xF)];
+    hexstr[i * 2] = hexval[((bytes[i] >> 4u) & 0xF)];
     hexstr[(i * 2) + 1] = hexval[(bytes[i]) & 0x0F];
   }