Require exact match of vm arguments.

runtime/bin/main.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include <stdlib.h>
 #include <string.h>
 #include <stdio.h>
 
 #include "include/dart_api.h"
 #include "include/dart_debugger_api.h"
@@ skipping 244 matching lines @@
   { NULL, NULL }
 };
 
 
 static bool ProcessMainOptions(const char* option) {
   int i = 0;
   const char* name = main_options[0].option_name;
   int option_length = strlen(option);
   while (name != NULL) {
     int length = strlen(name);
-    if ((option_length >= length) && (strncmp(option, name, length) == 0)) {
+    if (option_length == length && strncmp(option, name, length) == 0) {

[Ivan Posva, 2013/06/11 09:55:49]

Please keep the parens.

How will this match "--snapshot=snapshotfile" to "--snapshot=" now?

[Anders Johnsen, 2013/06/11 10:44:32]

Done. I see, updated.

       if (!main_options[i].process(option + length)) {
         Log::PrintErr("Invalid option specification : '%s'\n", option);
       }
       return true;
     }
     i += 1;
     name = main_options[i].option_name;
   }
   return false;
 }
@@ skipping 598 matching lines @@
 
   return Process::GlobalExitCode();
 }
 
 }  // namespace bin
 }  // namespace dart
 
 int main(int argc, char** argv) {
   return dart::bin::main(argc, argv);
 }