1 files changed, 15 insertions, 11 deletions

diff --git a/src/window.c b/src/window.c
index 62df349fb..d4083beeb 100644
--- a/src/window.c
+++ b/src/window.c
@@ -909,7 +909,7 @@ static ExprList *exprListAppendList(
         int iDummy;
         Expr *pSub;
         pSub = sqlite3ExprSkipCollateAndLikely(pDup);
-        if( sqlite3ExprIsInteger(pSub, &iDummy) ){
+        if( sqlite3ExprIsInteger(pSub, &iDummy, 0) ){
           pSub->op = TK_NULL;
           pSub->flags &= ~(EP_IntValue|EP_IsTrue|EP_IsFalse);
           pSub->u.zToken = 0;
@@ -1077,9 +1077,10 @@ int sqlite3WindowRewrite(Parse *pParse, Select *p){
     assert( pSub!=0 || p->pSrc==0 ); /* Due to db->mallocFailed test inside
                                      ** of sqlite3DbMallocRawNN() called from
                                      ** sqlite3SrcListAppend() */
-    if( p->pSrc ){
+    if( p->pSrc==0 ){
+      sqlite3SelectDelete(db, pSub);
+    }else if( sqlite3SrcItemAttachSubquery(pParse, &p->pSrc->a[0], pSub, 0) ){
       Table *pTab2;
-      p->pSrc->a[0].pSelect = pSub;
       p->pSrc->a[0].fg.isCorrelated = 1;
       sqlite3SrcListAssignCursors(pParse, p->pSrc);
       pSub->selFlags |= SF_Expanded|SF_OrderByReqd;
@@ -1093,7 +1094,7 @@ int sqlite3WindowRewrite(Parse *pParse, Select *p){
       }else{
         memcpy(pTab, pTab2, sizeof(Table));
         pTab->tabFlags |= TF_Ephemeral;
-        p->pSrc->a[0].pTab = pTab;
+        p->pSrc->a[0].pSTab = pTab;
         pTab = pTab2;
         memset(&w, 0, sizeof(w));
         w.xExprCallback = sqlite3WindowExtraAggFuncDepth;
@@ -1101,8 +1102,6 @@ int sqlite3WindowRewrite(Parse *pParse, Select *p){
         w.xSelectCallback2 = sqlite3WalkerDepthDecrease;
         sqlite3WalkSelect(&w, pSub);
       }
-    }else{
-      sqlite3SelectDelete(db, pSub);
     }
     if( db->mallocFailed ) rc = SQLITE_NOMEM;
 
@@ -1164,7 +1163,7 @@ void sqlite3WindowListDelete(sqlite3 *db, Window *p){
 ** variable values in the expression tree.
 */
 static Expr *sqlite3WindowOffsetExpr(Parse *pParse, Expr *pExpr){
-  if( 0==sqlite3ExprIsConstant(pExpr) ){
+  if( 0==sqlite3ExprIsConstant(0,pExpr) ){
     if( IN_RENAME_OBJECT ) sqlite3RenameExprUnmap(pParse, pExpr);
     sqlite3ExprDelete(pParse->db, pExpr);
     pExpr = sqlite3ExprAlloc(pParse->db, TK_NULL, 0, 0);
@@ -1389,10 +1388,15 @@ int sqlite3WindowCompare(
 ** and initialize registers and cursors used by sqlite3WindowCodeStep().
 */
 void sqlite3WindowCodeInit(Parse *pParse, Select *pSelect){
-  int nEphExpr = pSelect->pSrc->a[0].pSelect->pEList->nExpr;
-  Window *pMWin = pSelect->pWin;
   Window *pWin;
-  Vdbe *v = sqlite3GetVdbe(pParse);
+  int nEphExpr;
+  Window *pMWin;
+  Vdbe *v;
+
+  assert( pSelect->pSrc->a[0].fg.isSubquery );
+  nEphExpr = pSelect->pSrc->a[0].u4.pSubq->pSelect->pEList->nExpr;
+  pMWin = pSelect->pWin;
+  v = sqlite3GetVdbe(pParse);
 
   sqlite3VdbeAddOp2(v, OP_OpenEphemeral, pMWin->iEphCsr, nEphExpr);
   sqlite3VdbeAddOp2(v, OP_OpenDup, pMWin->iEphCsr+1, pMWin->iEphCsr);
@@ -2789,7 +2793,7 @@ void sqlite3WindowCodeStep(
   Vdbe *v = sqlite3GetVdbe(pParse);
   int csrWrite;                   /* Cursor used to write to eph. table */
   int csrInput = p->pSrc->a[0].iCursor;     /* Cursor of sub-select */
-  int nInput = p->pSrc->a[0].pTab->nCol;    /* Number of cols returned by sub */
+  int nInput = p->pSrc->a[0].pSTab->nCol;   /* Number of cols returned by sub */
   int iInput;                               /* To iterate through sub cols */
   int addrNe;                     /* Address of OP_Ne */
   int addrGosubFlush = 0;         /* Address of OP_Gosub to flush: */