1 files changed, 4 insertions, 1 deletions
diff --git a/src/expr.c b/src/expr.c
index da8499a60..b8b0eb731 100644
--- a/src/expr.c
+++ b/src/expr.c
@@ -739,6 +739,8 @@ static int exprStructSize(Expr *p){
 static int dupedExprStructSize(Expr *p, int flags){
   int nSize;
   assert( flags==EXPRDUP_REDUCE || flags==0 ); /* Only one flag value allowed */
+  assert( EXPR_FULLSIZE<=0xfff );
+  assert( (0xfff & (EP_Reduced|EP_TokenOnly))==0 );
   if( 0==(flags&EXPRDUP_REDUCE) ){
     nSize = EXPR_FULLSIZE;
   }else{
@@ -746,9 +748,10 @@ static int dupedExprStructSize(Expr *p, int flags){
     assert( !ExprHasProperty(p, EP_FromJoin) ); 
     assert( !ExprHasProperty(p, EP_MemToken) );
     assert( !ExprHasProperty(p, EP_NoReduce) );
-    if( p->pLeft || p->pRight || p->x.pList ){
+    if( p->pLeft || p->x.pList ){
       nSize = EXPR_REDUCEDSIZE | EP_Reduced;
     }else{
+      assert( p->pRight==0 );
       nSize = EXPR_TOKENONLYSIZE | EP_TokenOnly;
     }
   }