Fix pointer truncation in 64-bit Windows builds

src/base/platform/platform-win32.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Platform-specific code for Win32.
 
 // Secure API functions are not available using MinGW with msvcrt.dll
 // on Windows XP. Make sure MINGW_HAS_SECURE_API is not defined to
 // disable definition of secure API functions in standard headers that
 // would conflict with our own implementation.
@@ skipping 1128 matching lines @@
         result.clear();
         return result;
       }
     }
     int lib_name_length = WideCharToMultiByte(
         CP_UTF8, 0, module_entry.szExePath, -1, NULL, 0, NULL, NULL);
     std::string lib_name(lib_name_length, 0);
     WideCharToMultiByte(CP_UTF8, 0, module_entry.szExePath, -1, &lib_name[0],
                         lib_name_length, NULL, NULL);
     result.push_back(OS::SharedLibraryAddress(
-        lib_name, reinterpret_cast<unsigned int>(module_entry.modBaseAddr),
-        reinterpret_cast<unsigned int>(module_entry.modBaseAddr +
-                                       module_entry.modBaseSize)));
+        lib_name, reinterpret_cast<uintptr_t>(module_entry.modBaseAddr),
+        reinterpret_cast<uintptr_t>(module_entry.modBaseAddr +
+                                    module_entry.modBaseSize)));
     cont = _Module32NextW(snapshot, &module_entry);
   }
   CloseHandle(snapshot);
 
   symbols_loaded = true;
   return result;
 }
 
 
 std::vector<OS::SharedLibraryAddress> OS::GetSharedLibraryAddresses() {
@@ skipping 230 matching lines @@
 
 
 void Thread::SetThreadLocal(LocalStorageKey key, void* value) {
   BOOL result = TlsSetValue(static_cast<DWORD>(key), value);
   USE(result);
   DCHECK(result);
 }
 
 }  // namespace base
 }  // namespace v8