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-rw-r--r--lib/Expr/ExprVisitor.cpp6
1 files changed, 3 insertions, 3 deletions
diff --git a/lib/Expr/ExprVisitor.cpp b/lib/Expr/ExprVisitor.cpp
index b15cdffa..5e9d0a81 100644
--- a/lib/Expr/ExprVisitor.cpp
+++ b/lib/Expr/ExprVisitor.cpp
@@ -22,7 +22,7 @@ namespace {
 using namespace klee;
 
 ref<Expr> ExprVisitor::visit(const ref<Expr> &e) {
-  if (!UseVisitorHash || e.isConstant()) {
+  if (!UseVisitorHash || e->isConstant()) {
     return visitActual(e);
   } else {
     visited_ty::iterator it = visited.find(e);
@@ -38,7 +38,7 @@ ref<Expr> ExprVisitor::visit(const ref<Expr> &e) {
 }
 
 ref<Expr> ExprVisitor::visitActual(const ref<Expr> &e) {
-  if (e.isConstant()) {    
+  if (e->isConstant()) {    
     return e;
   } else {
     Expr &ep = *e.get();
@@ -106,7 +106,7 @@ ref<Expr> ExprVisitor::visitActual(const ref<Expr> &e) {
         if (recursive)
           e = visit(e);
       }
-      if (!e.isConstant()) {
+      if (!e->isConstant()) {
         res = visitExprPost(*e.get());
         if (res.kind==Action::ChangeTo)
           e = res.argument;