diff --git a/external/bsd/llvm/dist/llvm/include/llvm/IR/ValueMap.h b/external/bsd/llvm/dist/llvm/include/llvm/IR/ValueMap.h
index f2ea405f1..f9a1a6240 100644
--- a/external/bsd/llvm/dist/llvm/include/llvm/IR/ValueMap.h
+++ b/external/bsd/llvm/dist/llvm/include/llvm/IR/ValueMap.h
@@ -101,7 +101,7 @@ public:
 
   ~ValueMap() {}
 
-  bool hasMD() const { return MDMap; }
+  bool hasMD() const { return static_cast<bool>(MDMap); }
   MDMapT &MD() {
     if (!MDMap)
       MDMap.reset(new MDMapT);