- Corrected a potentially disastrous automatic int->uint conversion in TextSimulation

- Make test-history run by commenting some "dangerous" lines
- Added a couple of comments to SchedulablesWidget::update() in the hope the may be useful to others in finding where the bug resides...

git-svn-id: svn://svn.gna.org/svn/sgpemv2/trunk@818 3ecf2c5c-341e-0410-92b4-d18e462d057c

src/text_simulation.cc

@@ -1413,7 +1413,13 @@ TextSimulation::update(const History& changed_history)
   /// therefore, the last snapshot on the history refers
   /// to instant (history.get_size() - 2).
   // this is a damn uint, so we must hack and hack
-  int printed_instant = changed_history.get_size() > 1 ? changed_history.get_size() - 2 : -1;
+  int printed_instant;
+ 
+  if(changed_history.get_size() > 1)
+    printed_instant = static_cast<int>(changed_history.get_size()) - 2;
+  else
+    printed_instant = -1;
+
   oss << ">>>> " << printed_instant << _("\nREADY QUEUE: { ");
 
   p_stdout(oss.str());