From 01a39b601f91c66e6f359d160010724afd3254a6 Mon Sep 17 00:00:00 2001
From: Ted Kremenek <kremenek@apple.com>
Date: Wed, 5 Mar 2014 23:38:41 +0000
Subject: [-Wunreachable-code] include some enum constants in "configuration
 value" heuristic

llvm-svn: 203026
---
 clang/lib/Analysis/ReachableCode.cpp | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'clang/lib/Analysis/ReachableCode.cpp')

diff --git a/clang/lib/Analysis/ReachableCode.cpp b/clang/lib/Analysis/ReachableCode.cpp
index f159642db2f..b772145456e 100644
--- a/clang/lib/Analysis/ReachableCode.cpp
+++ b/clang/lib/Analysis/ReachableCode.cpp
@@ -376,6 +376,11 @@ static bool isConfigurationValue(const Stmt *S) {
     S = Ex->IgnoreParenCasts();
 
   switch (S->getStmtClass()) {
+    case Stmt::DeclRefExprClass: {
+      const DeclRefExpr *DR = cast<DeclRefExpr>(S);
+      const EnumConstantDecl *ED = dyn_cast<EnumConstantDecl>(DR->getDecl());
+      return ED ? isConfigurationValue(ED->getInitExpr()) : false;
+    }
     case Stmt::IntegerLiteralClass:
       return isExpandedFromConfigurationMacro(S);
     case Stmt::UnaryExprOrTypeTraitExprClass:
-- 
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