diff --git a/lib/Transforms/IPO/FunctionAttrs.cpp b/lib/Transforms/IPO/FunctionAttrs.cpp
index 907cede8e5c..351809ddede 100644
--- a/lib/Transforms/IPO/FunctionAttrs.cpp
+++ b/lib/Transforms/IPO/FunctionAttrs.cpp
@@ -477,7 +477,7 @@ determinePointerReadAttrs(Argument *A,
       // to a operand bundle use, these cannot participate in the optimistic SCC
       // analysis.  Instead, we model the operand bundle uses as arguments in
       // call to a function external to the SCC.
-      if (!SCCNodes.count(std::next(F->arg_begin(), UseIndex)) ||
+      if (!SCCNodes.count(&*std::next(F->arg_begin(), UseIndex)) ||
           IsOperandBundleUse) {
 
         // The accessors used on CallSite here do the right thing for calls and