diff -u -r ../llvm-4.0.0.src/tools/clang/lib/StaticAnalyzer/Checkers/ExprInspectionChecker.cpp ./tools/clang/lib/StaticAnalyzer/Checkers/ExprInspectionChecker.cpp
--- ../llvm-4.0.0.src/tools/clang/lib/StaticAnalyzer/Checkers/ExprInspectionChecker.cpp	2016-11-30 18:57:18.000000000 +0100
+++ ./tools/clang/lib/StaticAnalyzer/Checkers/ExprInspectionChecker.cpp	2017-03-14 18:11:26.984865292 +0100
@@ -12,6 +12,7 @@
 #include "clang/StaticAnalyzer/Core/Checker.h"
 #include "clang/StaticAnalyzer/Core/PathSensitive/CheckerContext.h"
 #include "clang/StaticAnalyzer/Checkers/SValExplainer.h"
+#include "llvm/ADT/StringExtras.h"
 #include "llvm/ADT/StringSwitch.h"
 
 using namespace clang;
@@ -269,7 +270,7 @@
     unsigned NumTimesReached = Item.second.NumTimesReached;
     ExplodedNode *N = Item.second.ExampleNode;
 
-    reportBug(std::to_string(NumTimesReached), BR, N);
+    reportBug(llvm::utostr(NumTimesReached), BR, N);
   }
 }