Subzero: Add -Wshadow to the build.

src/IceCompileServer.h

 //===- subzero/src/IceCompileServer.h - Compile server ----------*- C++ -*-===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 ///
 /// \file
@@ skipping 26 matching lines @@
 ///
 /// When run on the commandline, it receives and therefore dispatches
 /// the request immediately.  When run in the browser, it blocks waiting
 /// for a request.
 class CompileServer {
   CompileServer() = delete;
   CompileServer(const CompileServer &) = delete;
   CompileServer &operator=(const CompileServer &) = delete;
 
 public:
-  explicit CompileServer(Compiler &Comp) : Comp(Comp) {}
+  explicit CompileServer(Compiler &MyComp) : Comp(MyComp) {}
 
   virtual ~CompileServer() = default;
 
   virtual void run() = 0;
 
   virtual ErrorCode &getErrorCode() { return LastError; }
   void transferErrorCode(ErrorCodes Code) { LastError.assign(Code); }
 
 protected:
   Compiler &getCompiler() const { return Comp; }
 
   Compiler &Comp;
   ErrorCode LastError;
 };
 
 /// Commandline variant of the compile server.
 class CLCompileServer : public CompileServer {
   CLCompileServer() = delete;
   CLCompileServer(const CLCompileServer &) = delete;
   CLCompileServer &operator=(const CLCompileServer &) = delete;
 
 public:
-  CLCompileServer(Compiler &Comp, int argc, char **argv)
-      : CompileServer(Comp), argc(argc), argv(argv) {}
+  CLCompileServer(Compiler &Comp, int MyArgc, char **MyArgv)
+      : CompileServer(Comp), argc(MyArgc), argv(MyArgv) {}
 
   ~CLCompileServer() final = default;
 
   void run() final;
 
 private:
   int argc;
   char **argv;
   std::unique_ptr<GlobalContext> Ctx;
 };
 
 } // end of namespace Ice
 
 #endif // SUBZERO_SRC_ICECOMPILESERVER_H