Index: src/select.c
==================================================================
--- src/select.c
+++ src/select.c
@@ -4643,11 +4643,11 @@
 */
 static void sqlite3SelectExpand(Parse *pParse, Select *pSelect){
   Walker w;
   w.xExprCallback = sqlite3ExprWalkNoop;
   w.pParse = pParse;
-  if( pParse->hasCompound ){
+  if( OK_IF_ALWAYS_TRUE(pParse->hasCompound) ){
     w.xSelectCallback = convertCompoundSelectToSubquery;
     w.xSelectCallback2 = 0;
     sqlite3WalkSelect(&w, pSelect);
   }
   w.xSelectCallback = selectExpander;