Blargh. Yet another shot in the dark attempt to fix win64 compile.

test/cctest/test-parsing.cc

 // Copyright 2006-2009 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 303 matching lines @@
       "var bar = function () { /* second */ }";
 
   i::Utf8ToUC16CharacterStream stream(reinterpret_cast<const i::byte*>(program),
                                       static_cast<unsigned>(strlen(program)));
   i::ScriptDataImpl* data =
       i::ParserApi::PartialPreParse(&stream, NULL);
   CHECK(!data->HasError());
 
   data->Initialize();
 
-  intptr_t first_function = strstr(program, "function") - program;
-  intptr_t first_lbrace = first_function + strlen("function () ");
+  int first_function =
+      static_cast<int>(strstr(program, "function") - program);
+  int first_lbrace = first_function + static_cast<int>(strlen("function () "));
   CHECK_EQ('{', program[first_lbrace]);
   i::FunctionEntry entry1 = data->GetFunctionEntry(first_lbrace);
   CHECK(!entry1.is_valid());
 
-  intptr_t second_function =
-      strstr(program + first_lbrace, "function") - program;
-  intptr_t second_lbrace = second_function + strlen("function () ");
+  int second_function =
+      static_cast<int>(strstr(program + first_lbrace, "function") - program);
+  int second_lbrace =
+      second_function + static_cast<int>(strlen("function () "));
   CHECK_EQ('{', program[second_lbrace]);
   i::FunctionEntry entry2 = data->GetFunctionEntry(second_lbrace);
   CHECK(entry2.is_valid());
   CHECK_EQ('}', program[entry2.end_pos() - 1]);
   delete data;
 }
 
 
 TEST(PreParseOverflow) {
   int marker;
@@ skipping 351 matching lines @@
   TestScanRegExp("/[\\u12]/flipperwald", "[\\u12]");
   TestScanRegExp("/[\\u123]/flipperwald", "[\\u123]");
   // Escaped ']'s wont end the character class.
   TestScanRegExp("/[\\]/]/flipperwald", "[\\]/]");
   // Escaped slashes are not terminating.
   TestScanRegExp("/\\//flipperwald", "\\/");
   // Starting with '=' works too.
   TestScanRegExp("/=/", "=");
   TestScanRegExp("/=?/", "=?");
 }