diff --git a/clang/lib/Analysis/RegionStore.cpp b/clang/lib/Analysis/RegionStore.cpp
index d825299..3bc9dcc 100644
--- a/clang/lib/Analysis/RegionStore.cpp
+++ b/clang/lib/Analysis/RegionStore.cpp
@@ -349,6 +349,7 @@
 
   SVal RetrieveArray(const GRState *St, const TypedRegion* R);
 
+  /// Get the state and region whose binding this region R corresponds to.
   std::pair<const GRState*, const MemRegion*>
   GetLazyBinding(RegionBindings B, const MemRegion *R);