use the new MemoryBuffer interfaces to simplify error reporting in clients.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36900 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/llvm2cpp/llvm2cpp.cpp b/tools/llvm2cpp/llvm2cpp.cpp
index 7a44602..d4382cd 100644
--- a/tools/llvm2cpp/llvm2cpp.cpp
+++ b/tools/llvm2cpp/llvm2cpp.cpp
@@ -52,11 +52,9 @@
   
   std::auto_ptr<Module> M;
   std::auto_ptr<MemoryBuffer> Buffer(
-       MemoryBuffer::getFileOrSTDIN(&InputFilename[0], InputFilename.size()));
+       MemoryBuffer::getFileOrSTDIN(InputFilename, &ErrorMessage));
   if (Buffer.get())
     M.reset(ParseBitcodeFile(Buffer.get(), &ErrorMessage));
-  else
-    ErrorMessage = "Error reading file '" + InputFilename + "'";
   if (M.get() == 0) {
     std::cerr << argv[0] << ": ";
     if (ErrorMessage.size())