[cfe-commits] PATCH: Fix dereference of end iterator

[Matt Beaumont-Gay]

Spotted by ASan via test/Analysis/func.c.

--- a/lib/Analysis/CallGraph.cpp	2012-03-13 16:21:39.000000000 -0700
+++ b/lib/Analysis/CallGraph.cpp	2012-03-14 11:26:25.000000000 -0700
@@ -133,7 +133,9 @@
 }

 CallGraphNode *CallGraph::getNode(const Decl *F) const {
-  return FunctionMap.find(F)->second;
+  FunctionMapTy::const_iterator I = FunctionMap.find(F);
+  if (I == FunctionMap.end()) return 0;
+  return I->second;
 }

 CallGraphNode *CallGraph::getOrInsertFunction(Decl *F) {