diff --git a/src/3proxy.c b/src/3proxy.c
index e903dff..67f5cde 100644
--- a/src/3proxy.c
+++ b/src/3proxy.c
@@ -215,7 +215,7 @@ void dumpcounters(struct trafcount *tlin, int counterd){
 
 	cheader.updated = conf.time;
 	lseek(counterd, 0, SEEK_SET);
-	write(counterd, &cheader, sizeof(struct counter_header));			
+	if(write(counterd, &cheader, sizeof(struct counter_header))){}
 	for(tl=tlin; tl; tl = tl->next){
 		if(tl->number){
 			lseek(counterd, 
@@ -224,7 +224,7 @@ void dumpcounters(struct trafcount *tlin, int counterd){
 			crecord.traf64 = tl->traf64;
 			crecord.cleared = tl->cleared;
 			crecord.updated = tl->updated;
-			write(counterd, &crecord, sizeof(struct counter_record));
+			if(write(counterd, &crecord, sizeof(struct counter_record))){}
 		}
 		if(tl->type!=NEVER && timechanged(tl->cleared, conf.time, tl->type)){
 			tl->cleared = conf.time;
@@ -315,7 +315,7 @@ void cyclestep(void){
 						else
 							strcat((char *)tmpbuf, (char *)conf.archiver[i]);
 					}
-					system((char *)tmpbuf+1);
+					if(system((char *)tmpbuf+1)){}
 				}
 			}
 		}
diff --git a/src/conf.c b/src/conf.c
index ae981be..e9f3b61 100644
--- a/src/conf.c
+++ b/src/conf.c
@@ -1348,13 +1348,14 @@ static int h_ace(int argc, unsigned char **argv){
 					sizeof(struct counter_header) + (tl->number - 1) * sizeof(struct counter_record),
 					SEEK_SET);
 				memset(&crecord, 0, sizeof(struct counter_record));
-				read(conf.counterd, &crecord, sizeof(struct counter_record));
-				tl->traf64 = crecord.traf64;
-				tl->cleared = crecord.cleared;
-				tl->updated = crecord.updated;
-				if(tl->cleared < 0 || tl->cleared >=  MAX_COUNTER_TIME || tl->updated < 0 || tl->updated >=  MAX_COUNTER_TIME){
-					fprintf(stderr, "Invalid, incompatible or corrupted counter file.\n");
-					return(6);
+				if(read(conf.counterd, &crecord, sizeof(struct counter_record)) == sizeof(struct counter_record)){
+				    tl->traf64 = crecord.traf64;
+				    tl->cleared = crecord.cleared;
+				    tl->updated = crecord.updated;
+				    if(tl->cleared < 0 || tl->cleared >=  MAX_COUNTER_TIME || tl->updated < 0 || tl->updated >=  MAX_COUNTER_TIME){
+					    fprintf(stderr, "Invalid, incompatible or corrupted counter file.\n");
+					    return(6);
+				    }
 				}
 			}
 		}
@@ -1575,7 +1576,7 @@ static int h_chroot(int argc, unsigned char **argv){
 		fprintf(stderr, "Unable to set uid %d", (int)uid);
 		return(5);
 	}
-	chdir("/");
+	if(chdir("/")){}
 	return 0;
 }
 #endif
diff --git a/src/plugins/FilePlugin/FilePlugin.c b/src/plugins/FilePlugin/FilePlugin.c
index 4a1294a..9aa95c6 100644
--- a/src/plugins/FilePlugin/FilePlugin.c
+++ b/src/plugins/FilePlugin/FilePlugin.c
@@ -415,7 +415,6 @@ static int WINAPI fp_poll(void *state, struct pollfd *fds, unsigned int nfds, in
  struct fp_stream *fps = NULL;
  int res;
  unsigned i;
- int to;
 
  for(i = 0; i<nfds; i++){
 	res = searchsocket(fds[i].fd, &fps);
diff --git a/src/plugins/StringsPlugin/StringsPlugin.c b/src/plugins/StringsPlugin/StringsPlugin.c
index e97098d..ccc8705 100644
--- a/src/plugins/StringsPlugin/StringsPlugin.c
+++ b/src/plugins/StringsPlugin/StringsPlugin.c
@@ -32,7 +32,7 @@ char **load_string(FILE *f,int max_count_str, int *countloadstr,
  /*find start service section*/
  while(!feof(f))
    {
-     fgets(tmpbuf1, 1023,f);  
+     if(!fgets(tmpbuf1, 1023,f)) return NULL;
      if ((strstr(tmpbuf1,start))!=NULL)  { i++; break; }
      tmpbuf1[0]='\0';
    }
@@ -51,7 +51,7 @@ char **load_string(FILE *f,int max_count_str, int *countloadstr,
   i=0;
  while ( !feof(f) || i< max_count_str)
    {
-     fgets(tmpbuf1, 1023,f);  
+     if(!fgets(tmpbuf1, 1023,f)) return NULL;
  
      if ((strstr(tmpbuf1,stop))!=NULL)  { break; }
 
diff --git a/src/proxy.c b/src/proxy.c
index 1cbfc50..4efc464 100644
--- a/src/proxy.c
+++ b/src/proxy.c
@@ -527,7 +527,7 @@ for(;;){
  }
  else if(param->ndatfilterscli > 0 && contentlength64 > 0){
   uint64_t newlen64;
-  newlen64 = sockfillbuffcli(param, (unsigned long)contentlength64, CONNECTION_S);
+  newlen64 = (uint64_t) sockfillbuffcli(param, (unsigned long)contentlength64, CONNECTION_S);
   if(newlen64 == contentlength64) {
 	action = handledatfltcli(param,  &param->clibuf, (int *)&param->clibufsize, 0, (int *)&param->cliinbuf);
 	if(action == HANDLED){
diff --git a/src/proxy.h b/src/proxy.h
index 2c65a40..e96a17e 100644
--- a/src/proxy.h
+++ b/src/proxy.h
@@ -164,8 +164,8 @@ int sockrecvfrom(struct clientparam *param, SOCKET sock, struct sockaddr * sin,
 
 int sockgetcharcli(struct clientparam * param, int timeosec, int timeousec);
 int sockgetcharsrv(struct clientparam * param, int timeosec, int timeousec);
-int sockfillbuffcli(struct clientparam * param, unsigned long size, int timeosec);
-int sockfillbuffsrv(struct clientparam * param, unsigned long size, int timeosec);
+unsigned long sockfillbuffcli(struct clientparam * param, unsigned long size, int timeosec);
+unsigned long sockfillbuffsrv(struct clientparam * param, unsigned long size, int timeosec);
 
 int sockgetlinebuf(struct clientparam * param, DIRECTION which, unsigned char * buf, int bufsize, int delim, int to);
 
diff --git a/src/sockgetchar.c b/src/sockgetchar.c
index a1304ac..3f715b2 100644
--- a/src/sockgetchar.c
+++ b/src/sockgetchar.c
@@ -87,7 +87,7 @@ int sockgetcharcli(struct clientparam * param, int timeosec, int timeousec){
 	return (int)*param->clibuf;
 }
 
-int sockfillbuffcli(struct clientparam * param, unsigned long size, int timeosec){
+unsigned long sockfillbuffcli(struct clientparam * param, unsigned long size, int timeosec){
 	int len;
 
 	if(!param->clibuf) return 0;
@@ -107,7 +107,7 @@ int sockfillbuffcli(struct clientparam * param, unsigned long size, int timeosec
 	return param->cliinbuf;
 }
 
-int sockfillbuffsrv(struct clientparam * param, unsigned long size, int timeosec){
+unsigned long sockfillbuffsrv(struct clientparam * param, unsigned long size, int timeosec){
 	int len;
 
 	if(!param->srvbuf) return 0;
diff --git a/src/sockmap.c b/src/sockmap.c
index 33bfb9d..d12a94b 100644
--- a/src/sockmap.c
+++ b/src/sockmap.c
@@ -60,7 +60,8 @@ int sockmap(struct clientparam * param, int timeo, int usesplice){
  int res;
  SASIZETYPE sasize;
  int needaction = 0;
- int graceclinum=0, gracesrvnum=0, graceclitraf=0, gracesrvtraf=0, gracetime=0;
+ int graceclinum=0, gracesrvnum=0, graceclitraf=0, gracesrvtraf=0;
+ time_t gracetime = 0;
 
 #ifdef WITHSPLICE
  uint64_t inclientpipe = 0, inserverpipe = 0;
diff --git a/src/tlspr.c b/src/tlspr.c
index 022a550..c44402d 100644
--- a/src/tlspr.c
+++ b/src/tlspr.c
@@ -38,13 +38,9 @@ int readtls(struct clientparam *param, int direction, unsigned char *buf, int bu
 #define PROTOLEN (32)
 
 
-int parsehello(int type, unsigned char *hello, int len, char *sni, int * snipos, int *lv, char * proto){
-    int hlen;
+int parsehello(int type, unsigned char *hello, unsigned len, char *sni, int * snipos, int *lv, char * proto){
     unsigned offset;
-    int slen;
-    int cslen;
-    int elen;
-    int snllen, snlen, alpnlen;
+    unsigned hlen, slen, cslen, elen, snllen, snlen, alpnlen;
     int snifound=0;
     
     if(len < 64) return -1;
@@ -74,7 +70,7 @@ int parsehello(int type, unsigned char *hello, int len, char *sni, int * snipos,
     offset += 2;
     if(elen+offset != len) return -9;
     while(elen > 1){
-	int xlen;
+	unsigned xlen;
 	xlen = size16(hello+offset+2);
 	if(xlen+4 > elen) return -10;
 	if(type == 1 && hello[offset] == 0 && hello[offset+1] == 0){
@@ -112,8 +108,8 @@ int parsehello(int type, unsigned char *hello, int len, char *sni, int * snipos,
     return snifound;
 }
 
-int tlstobufcli(struct clientparam *param, int offset){
-    int len, newlen;
+int tlstobufcli(struct clientparam *param){
+    unsigned long  len, newlen;
     if(!param->clibuf){
 	if(!(param->clibuf = myalloc(SRVBUFSIZE))) return -1;
         param->clibufsize = SRVBUFSIZE;
@@ -139,11 +135,11 @@ int tlstobufcli(struct clientparam *param, int offset){
 	    if(param->cliinbuf <= newlen) return -5;
 	}
     }
-    return len;
+    return (int)len;
 }
 
-int tlstobufsrv(struct clientparam *param, int offset){
-    int len, newlen;
+int tlstobufsrv(struct clientparam *param){
+    unsigned long len, newlen;
 
     if(param->cliinbuf != param->clioffset){
 	len = socksend(param, param->remsock, param->clibuf+param->clioffset,param->cliinbuf-param->clioffset, conf.timeouts[STRING_S]);
@@ -157,20 +153,20 @@ int tlstobufsrv(struct clientparam *param, int offset){
 	param->srvbufsize = SRVBUFSIZE;
 	param->srvoffset = param->srvinbuf = 0;
     }
-    len = sockfillbuffsrv(param, offset+5, conf.timeouts[STRING_S]);
-    if(len < offset+5) return -3;
-    if(param->srvbuf[offset+1] != 3) {
+    len = sockfillbuffsrv(param, 5, conf.timeouts[STRING_S]);
+    if(len < 5) return -3;
+    if(param->srvbuf[1] != 3) {
 	return -4;
     }
     else {
-	len = offset + 5 + size16(param->srvbuf+offset+3);
+	len = 5 + size16(param->srvbuf+3);
 	if(len > param->srvbufsize) return -5;
 	for(newlen=param->srvinbuf; newlen < len; newlen=param->srvinbuf){
 	    sockfillbuffsrv(param, len, conf.timeouts[STRING_S]);
 	    if(param->srvinbuf <= newlen) return -6;
 	}
     }
-    return len-offset;
+    return (int)len;
 }
 
 void * tlsprchild(struct clientparam* param) {
@@ -181,13 +177,13 @@ void * tlsprchild(struct clientparam* param) {
  char proto[PROTOLEN]="-";
  int snipos = 0;
  
- res = tlstobufcli(param, 0);
+ res = tlstobufcli(param);
  if(res <= 0 || param->clibuf[0] != 22){
      if(param->srv->requirecert)RETURN(300-res);
  }
  else {
     lv = param->clibuf[2];
-    res = parsehello(1, param->clibuf, res, sni, &snipos, &lv, proto);
+    res = parsehello(1, param->clibuf, (unsigned)res, sni, &snipos, &lv, proto);
     if(res > 0){
 	if(param->hostname){
 	    myfree(param->hostname);
@@ -225,20 +221,20 @@ void * tlsprchild(struct clientparam* param) {
  }
  
  if(param->srv->requirecert > 1){
-    res = tlstobufsrv(param, 0);
+    res = tlstobufsrv(param);
     if(res <= 0 || param->srvbuf[0] != 22) RETURN(340-res);
     lv = param->srvbuf[2];
-    res = parsehello(2, param->srvbuf, res, sni, &snipos, &lv, proto);
+    res = parsehello(2, param->srvbuf, (unsigned)res, sni, &snipos, &lv, proto);
     if (res < 0) RETURN(350-res);
  }
  if(param->srv->requirecert > 2){
-    int srvcert=0, clicert=0, reqcert=0, len, rlen, done;
+    int srvcert=0, clicert=0, reqcert=0, len, done;
     if(lv > 3) RETURN(370);
     for(done=0;!done;) {
 	len = param->srvinbuf;
 	if(socksend(param, param->clisock, param->srvbuf,len, conf.timeouts[STRING_S]) != len) RETURN(371);
 	param->srvinbuf = 0;
-	res = tlstobufsrv(param, 0);
+	res = tlstobufsrv(param);
 	if(res <= 0) RETURN(380-res);
 	if(param->srvbuf[0]!= 22) break;
 	switch(param->srvbuf[5]){
@@ -260,7 +256,7 @@ void * tlsprchild(struct clientparam* param) {
     if(param->srv->requirecert > 3){
 	if(!reqcert) RETURN(374);
     	for(done=0;!done;) {
-	    res = tlstobufcli(param, 0);
+	    res = tlstobufcli(param);
 	    if(res <= 0) RETURN(390-res);
 	    len = res;
 	    if(param->clibuf[0]!= 22) break;
diff --git a/src/udppm.c b/src/udppm.c
index 781cc16..5a2f731 100644
--- a/src/udppm.c
+++ b/src/udppm.c
@@ -24,7 +24,6 @@ void * udppmchild(struct clientparam* param) {
  SASIZETYPE size;
  unsigned long ul = 1;
 #endif
- struct pollfd fds[256];
 
 
  if(!param->hostname && parsehostname((char *)param->srv->target, param, ntohs(param->srv->targetport))) RETURN(100);
diff --git a/src/webadmin.c b/src/webadmin.c
index b3548bf..cf51eea 100644
--- a/src/webadmin.c
+++ b/src/webadmin.c
@@ -593,7 +593,7 @@ void * adminchild(struct clientparam* param) {
 			if(writable && !error){
 				fflush(writable);
 #ifndef _WINCE
-				ftruncate(fileno(writable), ftell(writable));
+				if(ftruncate(fileno(writable), ftell(writable))){}
 #endif
 			}
 			printstr(&pp, error?    "<h3><font color=\"red\">Config file is not writable</font></h3>Make sure you have \"writable\" command in configuration file":