Fixed iterator bug in ExplodedNodeImpl::NodeGroup::end(); we would improperly
handle the case where the number of nodes was 0.

Fixed bug in GREngineImpl where we did not proceed to the next statement
when processing a PostStmt location.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@46093 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/Analysis/ExplodedGraph.cpp b/Analysis/ExplodedGraph.cpp
index 35e9d9d..1cfb02c 100644
--- a/Analysis/ExplodedGraph.cpp
+++ b/Analysis/ExplodedGraph.cpp
@@ -60,7 +60,7 @@
 
 ExplodedNodeImpl** ExplodedNodeImpl::NodeGroup::end() const {
   if (getKind() == Size1)
-    return ((ExplodedNodeImpl**) &P)+1;
+    return (ExplodedNodeImpl**) (P ? &P+1 : &P);
   else
     return const_cast<ExplodedNodeImpl**>(&*(getVector(getPtr()).rbegin())+1);
 }