fix bug.... not quite perfect for linux locks, but runs to completion...

[model-checker.git] / nodestack.cc

diff --git a/nodestack.cc b/nodestack.cc
index 23611f976dfc2c5cf35f66c65284d0e4f890b1d1..c364df9f7613178e2453d05bd667f64f44ed4fde 100644 (file)
--- a/nodestack.cc
+++ b/nodestack.cc
@@ -158,7 +158,7 @@ bool Node::add_future_value(uint64_t value, modelclock_t expiration) {
                if (future_values[i].value == value) {
                        if (future_values[i].expiration>=expiration)
                                return false;
-                       if (future_index < i) {
+                       if (future_index < ((int) i)) {
                                suitableindex=i;
                        }
                }
@@ -178,7 +178,7 @@ bool Node::add_future_value(uint64_t value, modelclock_t expiration) {
  * @return true if the future_values set is empty.
  */
 bool Node::future_value_empty() {
-       return ((future_index + 1) >= future_values.size());
+       return ((future_index + 1) >= ((int)future_values.size()));
 }
 
 /**
@@ -288,12 +288,12 @@ void Node::add_read_from(const ModelAction *act)
  * @return The first element in future_values
  */
 uint64_t Node::get_future_value() {
-       ASSERT(future_index<future_values.size());
+       ASSERT(future_index<((int)future_values.size()));
        return future_values[future_index].value;
 }
 
 modelclock_t Node::get_future_value_expiration() {
-       ASSERT(future_index<future_values.size());
+       ASSERT(future_index<((int)future_values.size()));
        return future_values[future_index].expiration;
 }
 
@@ -325,8 +325,11 @@ const ModelAction * Node::get_read_from() {
 bool Node::increment_read_from() {
        DBG();
        promises.clear();
-       read_from_index++;
-       return (read_from_index < may_read_from.size());
+       if (read_from_index < may_read_from.size()) {
+               read_from_index++;
+               return read_from_index < may_read_from.size();
+       }
+       return false;
 }
 
 /**
@@ -336,8 +339,11 @@ bool Node::increment_read_from() {
 bool Node::increment_future_value() {
        DBG();
        promises.clear();
-       future_index++;
-       return (future_index < future_values.size());
+       if (future_index < ((int)future_values.size())) {
+               future_index++;
+               return (future_index < ((int)future_values.size()));
+       }
+       return false;
 }
 
 void Node::explore(thread_id_t tid)