1 files changed, 1 insertions, 1 deletions
diff --git a/include/llvm/Analysis/InlineCost.h b/include/llvm/Analysis/InlineCost.h
index bc7924e10f..28baa9eb94 100644
--- a/include/llvm/Analysis/InlineCost.h
+++ b/include/llvm/Analysis/InlineCost.h
@@ -77,7 +77,7 @@ public:
   }
 
   /// \brief Test whether the inline cost is low enough for inlining.
-  operator bool() const {
+  LLVM_EXPLICIT operator bool() const {
     return Cost < Threshold;
   }