From: Brian Norris <banorris@uci.edu>
Date: Sat, 2 Mar 2013 23:03:58 +0000 (-0800)
Subject: model: bugfix - adding a Promise reader can cause failure
X-Git-Tag: oopsla2013~175
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=443fd91df4ad9b88d5ec88a29f80008911b4a917;p=model-checker.git

model: bugfix - adding a Promise reader can cause failure
---

diff --git a/model.cc b/model.cc
index aba7177..38d08d9 100644
--- a/model.cc
+++ b/model.cc
@@ -882,7 +882,8 @@ bool ModelChecker::process_read(ModelAction *curr)
 		}
 		case READ_FROM_PROMISE: {
 			Promise *promise = curr->get_node()->get_read_from_promise();
-			promise->add_reader(curr);
+			if (promise->add_reader(curr))
+				priv->failed_promise = true;
 			value = promise->get_value();
 			curr->set_read_from_promise(promise);
 			mo_graph->startChanges();