diff --git a/src/leveldb/db/db_test.cc b/src/leveldb/db/db_test.cc
--- a/src/leveldb/db/db_test.cc
+++ b/src/leveldb/db/db_test.cc
@@ -119,6 +119,7 @@
         }
         return base_->Sync();
       }
+      std::string GetName() const override { return "[datafile]"; }
     };
     class ManifestFile : public WritableFile {
      private:
@@ -143,6 +144,8 @@
           return base_->Sync();
         }
       }
+      std::string GetName() const override { return "[manifestfile]"; }
+
     };
 
     if (non_writable_.Acquire_Load() != NULL) {
@@ -176,6 +179,7 @@
         counter_->Increment();
         return target_->Read(offset, n, result, scratch);
       }
+      std::string GetName() const override { return "[countingfile]"; }
     };
 
     Status s = target()->NewRandomAccessFile(f, r);
diff --git a/src/leveldb/db/fault_injection_test.cc b/src/leveldb/db/fault_injection_test.cc
--- a/src/leveldb/db/fault_injection_test.cc
+++ b/src/leveldb/db/fault_injection_test.cc
@@ -114,6 +114,7 @@
   virtual Status Close();
   virtual Status Flush();
   virtual Status Sync();
+  std::string GetName() const override;
 
  private:
   FileState state_;
@@ -224,6 +225,11 @@
   return s;
 }
 
+std::string TestWritableFile::GetName() const /*override*/ {
+    return "[testwritablefile]"; 
+}
+
+
 Status FaultInjectionTestEnv::NewWritableFile(const std::string& fname,
                                               WritableFile** result) {
   WritableFile* actual_writable_file;
diff --git a/src/leveldb/db/log_test.cc b/src/leveldb/db/log_test.cc
--- a/src/leveldb/db/log_test.cc
+++ b/src/leveldb/db/log_test.cc
@@ -49,6 +49,7 @@
       contents_.append(slice.data(), slice.size());
       return Status::OK();
     }
+    std::string GetName() const override { return "[stringdest]"; }
   };
 
   class StringSource : public SequentialFile {
@@ -86,6 +87,8 @@
 
       return Status::OK();
     }
+
+    std::string GetName() const override { return "[stringsource]"; }
   };
 
   class ReportCollector : public Reader::Reporter {
diff --git a/src/leveldb/table/table_test.cc b/src/leveldb/table/table_test.cc
--- a/src/leveldb/table/table_test.cc
+++ b/src/leveldb/table/table_test.cc
@@ -102,6 +102,9 @@
     return Status::OK();
   }
 
+  std::string GetName() const override { return "[stringsink]"; }
+
+
  private:
   std::string contents_;
 };
@@ -130,6 +133,8 @@
     return Status::OK();
   }
 
+  std::string GetName() const override { return "[stringsource]"; }
+
  private:
   std::string contents_;
 };