1 files changed, 2 insertions, 0 deletions
diff --git a/src/resolve.c b/src/resolve.c
index 3a44aef62..2adf4e28e 100644
--- a/src/resolve.c
+++ b/src/resolve.c
@@ -415,6 +415,8 @@ Expr *sqlite3CreateColumnExpr(sqlite3 *db, SrcList *pSrc, int iSrc, int iCol){
       p->iColumn = -1;
     }else{
       p->iColumn = (ynVar)iCol;
+      testcase( iCol==BMS );
+      testcase( iCol==BMS-1 );
       pItem->colUsed |= ((Bitmask)1)<<(iCol>=BMS ? BMS-1 : iCol);
     }
     ExprSetProperty(p, EP_Resolved);