Fix accidental use of CheckSVal instead of CheckLocation, and add a
small test case to show we handle dereferences of undefined values.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@85492 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/GRExprEngineInternalChecks.cpp b/lib/Analysis/GRExprEngineInternalChecks.cpp
index ca38b05..526bc93 100644
--- a/lib/Analysis/GRExprEngineInternalChecks.cpp
+++ b/lib/Analysis/GRExprEngineInternalChecks.cpp
@@ -763,7 +763,7 @@
 public:
   CheckUndefDeref() : BT(0) {}
 
-  ExplodedNode *CheckSVal(const Stmt *S, ExplodedNode *Pred,
+  ExplodedNode *CheckLocation(const Stmt *S, ExplodedNode *Pred,
                           const GRState *state, SVal V, GRExprEngine &Eng);
 
   static void *getTag() {
@@ -772,7 +772,7 @@
   }
 };
 
-ExplodedNode *CheckUndefDeref::CheckSVal(const Stmt *S, ExplodedNode *Pred,
+ExplodedNode *CheckUndefDeref::CheckLocation(const Stmt *S, ExplodedNode *Pred,
                                          const GRState *state, SVal V,
                                          GRExprEngine &Eng) {
   GRStmtNodeBuilder &Builder = Eng.getBuilder();