PiperOrigin-RevId: 161791822

src/main/cpp/option_processor.h

diff --git a/src/main/cpp/option_processor.h b/src/main/cpp/option_processor.h
index 46fd61e..7054ac1 100644
--- a/src/main/cpp/option_processor.h
+++ b/src/main/cpp/option_processor.h
@@ -73,7 +73,7 @@
   //
   // If the method fails then error will contain the cause, otherwise error
   // remains untouched.
-  std::unique_ptr<CommandLine> SplitCommandLine(
+  virtual std::unique_ptr<CommandLine> SplitCommandLine(
       const std::vector<std::string>& args,
       std::string* error) const;