1 files changed, 1 insertions, 1 deletions
diff --git a/src/expr.c b/src/expr.c
index 41cc2724f..c9deef0b6 100644
--- a/src/expr.c
+++ b/src/expr.c
@@ -1511,7 +1511,7 @@ Select *sqlite3SelectDup(sqlite3 *db, Select *pDup, int flags){
 #ifndef SQLITE_OMIT_WINDOWFUNC
     pNew->pWin = 0;
     pNew->pWinDefn = sqlite3WindowListDup(db, p->pWinDefn);
-    if( p->pWin ) gatherSelectWindows(pNew);
+    if( p->pWin && db->mallocFailed==0 ) gatherSelectWindows(pNew);
 #endif
     pNew->selId = p->selId;
     *pp = pNew;