Fixing numerous "variable is set but never used" warnings.

modified:
  storage/connect/filamfix.cpp
  storage/connect/filamtxt.cpp
  storage/connect/filamvct.cpp
  storage/connect/odbconn.cpp
  storage/connect/tabodbc.cpp
  storage/connect/xindex.cpp

storage/connect/filamfix.cpp

@@ -425,9 +425,9 @@ int FIXFAM::DeleteRecords(PGLOBAL g, int irc)
       /*  for compatibility with Text files and other OS's.            */
       /*****************************************************************/
       char filename[_MAX_PATH];
-      int  rc, h;
+      int  h;
 
-      rc = PlugCloseFile(g, To_Fb);
+      /*rc= */PlugCloseFile(g, To_Fb);
       PlugSetPath(filename, To_File, Tdbp->GetPath());
 
       if ((h= global_open(g, MSGID_OPEN_STRERROR, filename, O_WRONLY)) <= 0)

storage/connect/filamtxt.cpp

@@ -786,10 +786,10 @@ int DOSFAM::DeleteRecords(PGLOBAL g, int irc)
       /*  for compatibility with Text files and other OS's.            */
       /*****************************************************************/
       char filename[_MAX_PATH];
-      int  h, rc;                           // File handle, return code
+      int  h;                           // File handle, return code
 
       PlugSetPath(filename, To_File, Tdbp->GetPath());
-      rc = PlugCloseFile(g, To_Fb);
+      /*rc=*/ PlugCloseFile(g, To_Fb);
 
       if ((h= global_open(g, MSGID_OPEN_STRERROR, filename, O_WRONLY)) <= 0)
         return RC_FX;

storage/connect/filamvct.cpp

@@ -204,7 +204,6 @@ bool VCTFAM::SetBlockInfo(PGLOBAL g)
   {
   char      filename[_MAX_PATH];
   bool      rc = false;
-  int       k;
   size_t    n;
   VECHEADER vh;
   FILE     *s;
@@ -216,7 +215,7 @@ bool VCTFAM::SetBlockInfo(PGLOBAL g)
       s = Stream;
 
       if (Header == 1)
-        k = fseek(s, 0, SEEK_SET);
+        /*k =*/ fseek(s, 0, SEEK_SET);
 
     } else
       s= global_fopen(g, MSGID_CANNOT_OPEN, filename, "r+b");
@@ -230,7 +229,7 @@ bool VCTFAM::SetBlockInfo(PGLOBAL g)
     sprintf(g->Message, "Error opening header file %s", filename);
     return true;
   } else if (Header == 3)
-    k = fseek(s, -(int)sizeof(VECHEADER), SEEK_END);
+    /*k =*/ fseek(s, -(int)sizeof(VECHEADER), SEEK_END);
 
   vh.MaxRec = MaxBlk * Bsize;
   vh.NumRec = (Block - 1) * Nrec + Last;
@@ -775,10 +774,10 @@ int VCTFAM::DeleteRecords(PGLOBAL g, int irc)
         /*  checked for compatibility with Text files and other OS's.  */
         /***************************************************************/
         char filename[_MAX_PATH];
-        int rc, h;
+        int h;
 
-        rc = CleanUnusedSpace(g);           // Clean last block
-        rc = PlugCloseFile(g, To_Fb);
+        /*rc =*/ CleanUnusedSpace(g);           // Clean last block
+        /*rc =*/ PlugCloseFile(g, To_Fb);
         Stream = NULL;                      // For SetBlockInfo
         PlugSetPath(filename, To_File, Tdbp->GetPath());
 
@@ -1705,7 +1704,7 @@ int VCMFAM::DeleteRecords(PGLOBAL g, int irc)
 /***********************************************************************/
 void VCMFAM::CloseTableFile(PGLOBAL g)
   {
-  int  rc = 0, wrc = RC_OK;
+  int  wrc = RC_OK;
   MODE mode = Tdbp->GetMode();
 
   if (mode == MODE_INSERT) {
@@ -1728,7 +1727,7 @@ void VCMFAM::CloseTableFile(PGLOBAL g)
     PlugCloseFile(g, To_Fb);
 
     if (wrc != RC_FX)
-      rc = ResetTableSize(g, Block, Last);
+      /*rc =*/ ResetTableSize(g, Block, Last);
 
   } else if (mode != MODE_DELETE)
     PlugCloseFile(g, To_Fb);
@@ -2205,11 +2204,11 @@ int VECFAM::DeleteRecords(PGLOBAL g, int irc)
       /* for compatibility with other OS's.                            */
       /*****************************************************************/
       char filename[_MAX_PATH];
-      int  h, rc;                            // File handle, return code
+      int  h;                            // File handle, return code
 
       for (int i = 0; i < Ncol; i++) {
         sprintf(filename, Colfn, i + 1);
-        rc = PlugCloseFile(g, To_Fbs[i]);
+        /*rc =*/ PlugCloseFile(g, To_Fbs[i]);
 
         if ((h= global_open(g, MSGID_OPEN_STRERROR, filename, O_WRONLY)) <= 0)
           return RC_FX;
@@ -3118,7 +3117,6 @@ int BGVFAM::GetBlockInfo(PGLOBAL g)
   {
   char      filename[_MAX_PATH];
   int       n;
-  bool      b;
   VECHEADER vh;
   HANDLE    h;
 
@@ -3162,7 +3160,7 @@ int BGVFAM::GetBlockInfo(PGLOBAL g)
 
     return n;
   } else if (Header == 3) 
-    b =  BigSeek(g, h, -(BIGINT)sizeof(vh), true);
+    /*b = */ BigSeek(g, h, -(BIGINT)sizeof(vh), true);
     
   if (BigRead(g, h, &vh, sizeof(vh))) {
     sprintf(g->Message, "Error reading header file %s", filename);
@@ -3190,7 +3188,7 @@ int BGVFAM::GetBlockInfo(PGLOBAL g)
 bool BGVFAM::SetBlockInfo(PGLOBAL g)
   {
   char      filename[_MAX_PATH];
-  bool      bk, b = false, rc = false;
+  bool      b = false, rc = false;
   VECHEADER vh;
   HANDLE    h = INVALID_HANDLE_VALUE;
 
@@ -3201,7 +3199,7 @@ bool BGVFAM::SetBlockInfo(PGLOBAL g)
       h = Hfile;
 
       if (Header == 1)
-        bk = BigSeek(g, h, (BIGINT)0);
+        /*bk =*/ BigSeek(g, h, (BIGINT)0);
 
     } else
       b = true;
@@ -3230,7 +3228,7 @@ bool BGVFAM::SetBlockInfo(PGLOBAL g)
     } // endif h
 
   if (Header == 3)
-    bk = BigSeek(g, h, -(BIGINT)sizeof(vh), true);
+    /*bk =*/ BigSeek(g, h, -(BIGINT)sizeof(vh), true);
 
   vh.MaxRec = MaxBlk * Bsize;
   vh.NumRec = (Block - 1) * Nrec + Last;

storage/connect/odbconn.cpp

@@ -954,17 +954,17 @@ int ODBConn::Open(PSZ ConnectString, DWORD options)
 
   // Allocate the HDBC and make connection
   try {
-    PSZ ver;
+    /*PSZ ver;*/
 
     AllocConnect(options);
-    ver = GetStringInfo(SQL_ODBC_VER);
+    /*ver = GetStringInfo(SQL_ODBC_VER);*/
 
     if (Connect(options)) {
       strcpy(g->Message, MSG(CONNECT_CANCEL));
       return 0;
       } // endif
 
-    ver = GetStringInfo(SQL_DRIVER_ODBC_VER);
+    /*ver = GetStringInfo(SQL_DRIVER_ODBC_VER);*/
   } catch(DBX *xp) {
 //    strcpy(g->Message, xp->m_ErrMsg[0]);
     strcpy(g->Message, xp->GetErrorMessage(0));
@@ -1213,13 +1213,13 @@ int ODBConn::ExecDirectSQL(char *sql, ODBCCOL *tocols)
     b = false;
 
     if (m_hstmt) {
-      RETCODE  rc;
+      /*RETCODE  rc;*/
 
 //    All this did not seems to make sense and was been commented out
 //    if (IsOpen())
 //      Close(SQL_CLOSE);
 
-      rc = SQLFreeStmt(m_hstmt, SQL_CLOSE);
+      /*rc =*/ SQLFreeStmt(m_hstmt, SQL_CLOSE);
       hstmt = m_hstmt;
       m_hstmt = NULL;
       ThrowDBX(MSG(SEQUENCE_ERROR));
@@ -1831,7 +1831,7 @@ int ODBConn::GetCatInfo(CATPARM *cap)
 /***********************************************************************/
 void ODBConn::Close()
   {
-  RETCODE rc;
+  /*RETCODE rc;*/
 
 #if 0
   // Close any open recordsets
@@ -1856,13 +1856,13 @@ void ODBConn::Close()
 
   if (m_hstmt) {
     // Is required for multiple tables
-    rc = SQLFreeStmt(m_hstmt, SQL_DROP);
+    /*rc =*/ SQLFreeStmt(m_hstmt, SQL_DROP);
     m_hstmt = NULL;
     } // endif m_hstmt
 
   if (m_hdbc != SQL_NULL_HDBC) {
-    rc = SQLDisconnect(m_hdbc);
-    rc = SQLFreeConnect(m_hdbc);
+    /*rc =*/ SQLDisconnect(m_hdbc);
+    /*rc =*/ SQLFreeConnect(m_hdbc);
     m_hdbc = SQL_NULL_HDBC;
 
 //  AfxLockGlobals(CRIT_ODBC);

storage/connect/tabodbc.cpp

@@ -324,7 +324,7 @@ char *TDBODBC::MakeSQL(PGLOBAL g, bool cnt)
   {
   char   *colist, *tabname, *sql, buf[64];
   LPCSTR  ownp = NULL, qualp = NULL;
-  int     rc, len, ncol = 0;
+  int     len, ncol = 0;
   bool    first = true;
   PTABLE  tablep = To_Table;
   PCOL    colp;
@@ -341,7 +341,7 @@ char *TDBODBC::MakeSQL(PGLOBAL g, bool cnt)
       for (colp = Columns; colp; colp = colp->GetNext())
         if (!colp->IsSpecial()) {
           // Column name can be in UTF-8 encoding
-          rc= Decode(colp->GetName(), buf, sizeof(buf));
+          /*rc=*/ Decode(colp->GetName(), buf, sizeof(buf));
 
           if (Quote) {
             if (first) {
@@ -376,7 +376,7 @@ char *TDBODBC::MakeSQL(PGLOBAL g, bool cnt)
   } // endif cnt
 
   // Table name can be encoded in UTF-8
-  rc = Decode(TableName, buf, sizeof(buf));
+  /*rc = */Decode(TableName, buf, sizeof(buf));
 
   // Put table name between identifier quotes in case in contains blanks
   tabname = (char*)PlugSubAlloc(g, NULL, strlen(buf) + 3);

storage/connect/xindex.cpp

@@ -2368,7 +2368,6 @@ bool XHUGE::Open(PGLOBAL g, char *filename, int id, MODE mode)
   } // endif Mode
 
 #else   // UNIX
-  int    rc = 0;
   int    oflag = O_LARGEFILE;         // Enable file size > 2G
   mode_t pmod = 0;
 
@@ -2394,7 +2393,7 @@ bool XHUGE::Open(PGLOBAL g, char *filename, int id, MODE mode)
   Hfile= global_open(g, MSGID_OPEN_ERROR_AND_STRERROR, filename, oflag, pmod);
 
   if (Hfile == INVALID_HANDLE_VALUE) {
-    rc = errno;
+    /*rc = errno;*/
 #if defined(TRACE)
     printf("Open: %s\n", g->Message);
 #endif   // TRACE