- Suppress some ubuntu compiler warnings

modified:
  storage/connect/connect.cc
  storage/connect/ha_connect.cc
  storage/connect/mycat.cc
  storage/connect/odbconn.cpp
  storage/connect/osutil.c
  storage/connect/tabutil.cpp

storage/connect/connect.cc

@@ -816,7 +816,7 @@ int CntIndexRange(PGLOBAL g, PTDB ptdb, const uchar* *key, uint *len,
 
           p+= valp->GetClen();
     
-          if (len[i] == p - kp) {
+          if (len[i] == (unsigned)(p - kp)) {
             n++;
             break;
           } else if (len[i] < (unsigned)(p - kp)) {

storage/connect/ha_connect.cc

@@ -3433,7 +3433,7 @@ static int connect_assisted_discovery(handlerton *hton, THD* thd,
   uint        tm, fnc= FNC_NO, supfnc= (FNC_NO | FNC_COL);
   bool        bif, ok= false, dbf= false;
   TABTYPE     ttp= TAB_UNDEF;
-  PQRYRES     qrp;
+  PQRYRES     qrp= NULL;
   PCOLRES     crp;
   PGLOBAL     g= GetPlug(thd, NULL);
   PTOS        topt= table_s->option_struct;
@@ -3709,7 +3709,7 @@ static int connect_assisted_discovery(handlerton *hton, THD* thd,
 
     if (fnc != FNC_NO || src || ttp == TAB_PIVOT) {
       // Catalog like table
-      for (crp=qrp->Colresp; !b && crp; crp= crp->Next) {
+      for (crp= qrp->Colresp; !b && crp; crp= crp->Next) {
         cnm= encode(g, crp->Name);
         type= PLGtoMYSQLtype(crp->Type, dbf);
         len= crp->Length;
@@ -3726,6 +3726,7 @@ static int connect_assisted_discovery(handlerton *hton, THD* thd,
         rem= NULL;
         typ= len= dec= 0;
         tm= NOT_NULL_FLAG;
+        cnm= (char*)"noname";
 
         for (crp= qrp->Colresp; crp; crp= crp->Next)
           switch (crp->Fld) {

storage/connect/mycat.cc

@@ -383,7 +383,7 @@ int MYCAT::GetCharCatInfo(PSZ what, PSZ sdef, char *buf, int size)
 /***********************************************************************/
 char *MYCAT::GetStringCatInfo(PGLOBAL g, PSZ what, PSZ sdef)
 	{
-	char *sval, *s= Hc->GetStringOption(what, sdef);
+	char *sval= NULL, *s= Hc->GetStringOption(what, sdef);
 	
 	if (s) {
 		sval= (char*)PlugSubAlloc(g, NULL, strlen(s) + 1);
@@ -408,8 +408,7 @@ char *MYCAT::GetStringCatInfo(PGLOBAL g, PSZ what, PSZ sdef)
 
       } // endif FileType
 
-  } else
-		sval = NULL;
+  } // endif s
 
 	return sval;
 	}	// end of GetStringCatInfo

storage/connect/odbconn.cpp

@@ -242,7 +242,7 @@ PQRYRES ODBCColumns(PGLOBAL g, char *dsn, char *table,
   int      maxres;
   PQRYRES  qrp;
   CATPARM *cap;
-  ODBConn *ocp;
+  ODBConn *ocp = NULL;
 
   /************************************************************************/
   /*  Do an evaluation of the result size.                                */
@@ -497,7 +497,7 @@ PQRYRES ODBCTables(PGLOBAL g, char *dsn, char *tabpat, bool info)
   int     maxres;
   PQRYRES  qrp;
   CATPARM *cap;
-  ODBConn *ocp;
+  ODBConn *ocp = NULL;
 
   /************************************************************************/
   /*  Do an evaluation of the result size.                                */
@@ -1654,7 +1654,7 @@ int ODBConn::GetCatInfo(CATPARM *cap)
   PCOLRES  crp;
   RETCODE  rc;
   HSTMT    hstmt = NULL;
-  SQLLEN  *vl, *vlen;
+  SQLLEN  *vl, *vlen = NULL;
   PVAL    *pval = NULL;
 
   try {

storage/connect/osutil.c

@@ -181,7 +181,7 @@ char *_fullpath(char *absPath, const char *relPath, size_t maxLength)
   }  else {
     char buff[2*_MAX_PATH];
 
-    getcwd(buff, _MAX_PATH);
+    assert(getcwd(buff, _MAX_PATH) != NULL);
     strcat(buff,"/");
     strcat(buff, relPath);
     strncpy(absPath, buff, maxLength);

storage/connect/tabutil.cpp

@@ -133,7 +133,7 @@ PQRYRES TabColumns(PGLOBAL g, THD *thd, const char *db,
   int          i, n, ncol = sizeof(buftyp) / sizeof(int);
   int          len, type, prec;
   bool         mysql;
-  TABLE_SHARE *s;
+  TABLE_SHARE *s = NULL;
   Field*      *field;
   Field       *fp;
   PQRYRES      qrp;
@@ -243,7 +243,9 @@ PQRYRES TabColumns(PGLOBAL g, THD *thd, const char *db,
   /**********************************************************************/
   /*  Return the result pointer for use by GetData routines.            */
   /**********************************************************************/
+  if (s)
 	  free_table_share(s);
+	  
   return qrp;
   } // end of TabColumns
 
@@ -315,12 +317,12 @@ TDBPRX::TDBPRX(PPRXDEF tdp) : TDBASE(tdp)
 /***********************************************************************/
 PTDBASE TDBPRX::GetSubTable(PGLOBAL g, PTABLE tabp, bool b)
   {
-  const char  *sp;
+  const char  *sp = NULL;
   char        *db, *name;
   bool         mysql = true;
   PTDB         tdbp = NULL;
   TABLE_SHARE *s = NULL;
-  Field*      *fp;
+  Field*      *fp = NULL;
   PCATLG       cat = To_Def->GetCat();
   PHC          hc = ((MYCAT*)cat)->GetHandler();
   LPCSTR       cdb, curdb = hc->GetDBName(NULL);