Add checker for CWE-469: Use of Pointer Subtraction to Determine Size. This
checker does not build sink nodes. Because svaluator computes an unknown value
for the subtraction now.

llvm-svn: 86517
diff --git a/clang/lib/Analysis/GRExprEngineInternalChecks.cpp b/clang/lib/Analysis/GRExprEngineInternalChecks.cpp
index 41ad018..8977b19 100644
--- a/clang/lib/Analysis/GRExprEngineInternalChecks.cpp
+++ b/clang/lib/Analysis/GRExprEngineInternalChecks.cpp
@@ -412,6 +412,7 @@
   RegisterDivZeroChecker(*this);
   RegisterReturnStackAddressChecker(*this);
   RegisterReturnUndefChecker(*this);
+  RegisterPointerSubChecker(*this);
 
   // Note that this must be registered after ReturnStackAddressChecker.
   RegisterReturnPointerRangeChecker(*this);