From: Brian Norris <banorris@uci.edu>
Date: Tue, 18 Sep 2012 20:24:47 +0000 (-0700)
Subject: cyclegraph: add ASSERT() for reflexive edges
X-Git-Tag: pldi2013~177^2^2~13
X-Git-Url: http://plrg.eecs.uci.edu/git/?p=model-checker.git;a=commitdiff_plain;h=1aeeeebeeed5c45f49649c7e94d9c5d682e2942f

cyclegraph: add ASSERT() for reflexive edges
---

diff --git a/cyclegraph.cc b/cyclegraph.cc
index ecf8a78..2bfe76a 100644
--- a/cyclegraph.cc
+++ b/cyclegraph.cc
@@ -41,6 +41,7 @@ CycleNode * CycleGraph::getNode(const ModelAction *action) {
 void CycleGraph::addEdge(const ModelAction *from, const ModelAction *to) {
 	ASSERT(from);
 	ASSERT(to);
+	ASSERT(from != to);
 
 	CycleNode *fromnode=getNode(from);
 	CycleNode *tonode=getNode(to);
@@ -82,6 +83,7 @@ void CycleGraph::addEdge(const ModelAction *from, const ModelAction *to) {
 void CycleGraph::addRMWEdge(const ModelAction *from, const ModelAction *rmw) {
 	ASSERT(from);
 	ASSERT(rmw);
+	ASSERT(from != rmw);
 
 	CycleNode *fromnode=getNode(from);
 	CycleNode *rmwnode=getNode(rmw);