For forward-declared static inline functions, delay CFG-based warnings until we
encounter a definition.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99243 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/AnalysisBasedWarnings.h b/lib/Sema/AnalysisBasedWarnings.h
index 26e973a..b5db8af 100644
--- a/lib/Sema/AnalysisBasedWarnings.h
+++ b/lib/Sema/AnalysisBasedWarnings.h
@@ -39,7 +39,8 @@
   Sema &S;
   Policy DefaultPolicy;
 
-  llvm::DenseMap<const FunctionDecl*, unsigned> VisitedFD;
+  enum VisitFlag { NotVisited = 0, Visited = 1, Pending = 2 };
+  llvm::DenseMap<const FunctionDecl*, VisitFlag> VisitedFD;
 
 public:
   AnalysisBasedWarnings(Sema &s);