From 403a1e9415b125a5d6cd0cf043f8b2c538cb8724 Mon Sep 17 00:00:00 2001
From: Stephen Williams <steve@icarus.com>
Date: Thu, 30 Oct 2008 22:11:05 -0700
Subject: [PATCH] Add a dup_expr method to NetEUBits.

The NetEUBits needs to create a NetEUBits when the dup_expr method is
called, so it needs its own dup_expr method.
---
 dup_expr.cc | 8 ++++++++
 netlist.h   | 1 +
 2 files changed, 9 insertions(+)

diff --git a/dup_expr.cc b/dup_expr.cc
index 91b6bc867..45ad48d5d 100644
--- a/dup_expr.cc
+++ b/dup_expr.cc
@@ -138,6 +138,14 @@ NetEUFunc* NetEUFunc::dup_expr() const
       return tmp;
 }
 
+NetEUBits* NetEUBits::dup_expr() const
+{
+      NetEUBits*tmp = new NetEUBits(op_, expr_->dup_expr());
+      assert(tmp);
+      tmp->set_line(*this);
+      return tmp;
+}
+
 NetEUnary* NetEUnary::dup_expr() const
 {
       NetEUnary*tmp = new NetEUnary(op_, expr_->dup_expr());
diff --git a/netlist.h b/netlist.h
index a73c68b98..0c1f52917 100644
--- a/netlist.h
+++ b/netlist.h
@@ -3655,6 +3655,7 @@ class NetEUBits : public NetEUnary {
 
       virtual NetNet* synthesize(Design*, NetScope*scope);
 
+      virtual NetEUBits* dup_expr() const;
       virtual NetExpr* eval_tree(int prune_to_width = -1);
       virtual ivl_variable_type_t expr_type() const;
 };