Index: src/resolve.c
==================================================================
--- src/resolve.c
+++ src/resolve.c
@@ -97,11 +97,10 @@
   sqlite3 *db;           /* The database connection */
 
   assert( iCol>=0 && iCol<pEList->nExpr );
   pOrig = pEList->a[iCol].pExpr;
   assert( pOrig!=0 );
-  assert( (pOrig->flags & EP_Resolved)!=0 || zType[0]==0 );
   db = pParse->db;
   pDup = sqlite3ExprDup(db, pOrig, 0);
   if( pDup==0 ) return;
   if( pOrig->op!=TK_COLUMN && zType[0]!='G' ){
     incrAggFunctionDepth(pDup, nSubquery);

Index: test/select4.test
==================================================================
--- test/select4.test
+++ test/select4.test
@@ -156,10 +156,13 @@
   set v [catch {execsql {
     SELECT 0 ORDER BY (SELECT 0) UNION SELECT 0;
   }} msg]
   lappend v $msg
 } {1 {ORDER BY clause should come after UNION not before}}
+do_execsql_test select4-2.5 {
+  SELECT 123 AS x ORDER BY (SELECT x ORDER BY 1);
+} {123}
 
 # Except operator
 #
 do_test select4-3.1.1 {
   execsql {