diff --git a/tools/bugpoint/BugDriver.h b/tools/bugpoint/BugDriver.h
index 75f166b21b2..fe5201eb2e6 100644
--- a/tools/bugpoint/BugDriver.h
+++ b/tools/bugpoint/BugDriver.h
@@ -217,8 +217,7 @@ public:
   /// returning the transformed module on success, or a null pointer on failure.
   std::unique_ptr<Module> runPassesOn(Module *M,
                                       const std::vector<std::string> &Passes,
-                                      unsigned NumExtraArgs = 0,
-                                      const char *const *ExtraArgs = nullptr);
+                                      ArrayRef<std::string> ExtraArgs = {});
 
   /// runPasses - Run the specified passes on Program, outputting a bitcode
   /// file and writting the filename into OutputFile if successful.  If the
@@ -231,8 +230,8 @@ public:
   ///
   bool runPasses(Module &Program, const std::vector<std::string> &PassesToRun,
                  std::string &OutputFilename, bool DeleteOutput = false,
-                 bool Quiet = false, unsigned NumExtraArgs = 0,
-                 const char *const *ExtraArgs = nullptr) const;
+                 bool Quiet = false,
+                 ArrayRef<std::string> ExtraArgs = {}) const;
 
   /// runPasses - Just like the method above, but this just returns true or
   /// false indicating whether or not the optimizer crashed on the specified
diff --git a/tools/bugpoint/ExtractFunction.cpp b/tools/bugpoint/ExtractFunction.cpp
index 105702de3f1..d9047acd30e 100644
--- a/tools/bugpoint/ExtractFunction.cpp
+++ b/tools/bugpoint/ExtractFunction.cpp
@@ -407,11 +407,10 @@ BugDriver::extractMappedBlocksFromModule(const std::vector<BasicBlock *> &BBs,
 
   std::string uniqueFN = "--extract-blocks-file=";
   uniqueFN += Temp->TmpName;
-  const char *ExtraArg = uniqueFN.c_str();
 
   std::vector<std::string> PI;
   PI.push_back("extract-blocks");
-  std::unique_ptr<Module> Ret = runPassesOn(M, PI, 1, &ExtraArg);
+  std::unique_ptr<Module> Ret = runPassesOn(M, PI, {uniqueFN});
 
   if (!Ret) {
     outs() << "*** Basic Block extraction failed, please report a bug!\n";
diff --git a/tools/bugpoint/OptimizerDriver.cpp b/tools/bugpoint/OptimizerDriver.cpp
index e093389bdfe..64af81fcc8a 100644
--- a/tools/bugpoint/OptimizerDriver.cpp
+++ b/tools/bugpoint/OptimizerDriver.cpp
@@ -130,8 +130,7 @@ static cl::list<std::string> OptArgs("opt-args", cl::Positional,
 bool BugDriver::runPasses(Module &Program,
                           const std::vector<std::string> &Passes,
                           std::string &OutputFilename, bool DeleteOutput,
-                          bool Quiet, unsigned NumExtraArgs,
-                          const char *const *ExtraArgs) const {
+                          bool Quiet, ArrayRef<std::string> ExtraArgs) const {
   // setup the output file name
   outs().flush();
   SmallString<128> UniqueFilename;
@@ -223,8 +222,7 @@ bool BugDriver::runPasses(Module &Program,
        I != E; ++I)
     Args.push_back(I->c_str());
   Args.push_back(Temp->TmpName.c_str());
-  for (unsigned i = 0; i < NumExtraArgs; ++i)
-    Args.push_back(*ExtraArgs);
+  Args.append(ExtraArgs.begin(), ExtraArgs.end());
 
   LLVM_DEBUG(errs() << "\nAbout to run:\t";
              for (unsigned i = 0, e = Args.size() - 1; i != e; ++i) errs()
@@ -268,10 +266,10 @@ bool BugDriver::runPasses(Module &Program,
 
 std::unique_ptr<Module>
 BugDriver::runPassesOn(Module *M, const std::vector<std::string> &Passes,
-                       unsigned NumExtraArgs, const char *const *ExtraArgs) {
+                       ArrayRef<std::string> ExtraArgs) {
   std::string BitcodeResult;
   if (runPasses(*M, Passes, BitcodeResult, false /*delete*/, true /*quiet*/,
-                NumExtraArgs, ExtraArgs)) {
+                ExtraArgs)) {
     return nullptr;
   }