Don't call accept the c socket, if we're currently closing.

runtime/bin/eventhandler_win.cc

 // Copyright (c) 2013, 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 "platform/globals.h"
 #if defined(TARGET_OS_WINDOWS)
 
 #include "bin/eventhandler.h"
 
 #include <process.h>  // NOLINT
@@ skipping 306 matching lines @@
 void FileHandle::EnsureInitialized(EventHandlerImplementation* event_handler) {
   ScopedLock lock(this);
   event_handler_ = event_handler;
   if (SupportsOverlappedIO() && completion_port_ == INVALID_HANDLE_VALUE) {
     CreateCompletionPort(event_handler_->completion_port());
   }
 }
 
 
 bool FileHandle::IsClosed() {
-  return IsClosing();
+  return IsClosing() && !HasPendingRead();

[kustermann, 2013/07/19 16:56:24]

Do we need a 'HasPendingWrite()' here as well?

[Anders Johnsen, 2013/07/19 17:03:39]

While I convinced myself that FileHandles never works with IOCompletionPorts,
but you are right. Changing.

 }
 
 
 void FileHandle::DoClose() {
   if (GetStdHandle(STD_OUTPUT_HANDLE) == handle_) {
     int fd = _open("NUL", _O_WRONLY);
     ASSERT(fd >= 0);
     _dup2(fd, _fileno(stdout));
     close(fd);
   } else {
@@ skipping 671 matching lines @@
 
 
 void EventHandlerImplementation::Shutdown() {
   SendData(kShutdownId, 0, 0);
 }
 
 }  // namespace bin
 }  // namespace dart
 
 #endif  // defined(TARGET_OS_WINDOWS)