From f61fe2be1e2d445cf314b1f8cd04bec101bfcaba Mon Sep 17 00:00:00 2001
From: Megan Wachs <megan@sifive.com>
Date: Fri, 28 Jul 2017 10:05:45 -0700
Subject: [PATCH] diplomacy: More verbose require

---
 src/main/scala/diplomacy/Nodes.scala | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/src/main/scala/diplomacy/Nodes.scala b/src/main/scala/diplomacy/Nodes.scala
index 619da2bb..8906f64b 100644
--- a/src/main/scala/diplomacy/Nodes.scala
+++ b/src/main/scala/diplomacy/Nodes.scala
@@ -49,8 +49,7 @@ abstract class NodeImp[D, U, EO, EI, B <: Data]
 
 abstract class BaseNode
 {
-  // You cannot create a Node outside a LazyModule!
-  require (!LazyModule.stack.isEmpty)
+  require (!LazyModule.stack.isEmpty, "You cannot create a node outside a LazyModule!")
 
   val lazyModule = LazyModule.stack.head
   val index = lazyModule.nodes.size