Issue #15842: the SocketIO.{readable,writable,seekable} methods now raise ValueError...

Patch by Alessandro Moura.

diff --cc Lib/socket.py
Simple merge

diff --cc Lib/test/test_socket.py
index 7716d334c5317156af87719f749ce1152d8aa08d,e2ed21d222b86767fce00ed5072a065275a330a6..d7c9a31decdfd9c5daed53f1412065c2476001b4
--- 1/Lib/test/test_socket.py
--- 2/Lib/test/test_socket.py
+++ b/Lib/test/test_socket.py
@@@ -1245,13 -839,18 +1245,24 @@@ class GeneralModuleTests(unittest.TestC
              fp.close()
              self.assertEqual(repr(fp), "<_io.BufferedReader name=-1>")
  
 -    def testListenBacklog0(self):
+     def test_unusable_closed_socketio(self):
+         with socket.socket() as sock:
+             fp = sock.makefile("rb", buffering=0)
+             self.assertTrue(fp.readable())
+             self.assertFalse(fp.writable())
+             self.assertFalse(fp.seekable())
+             fp.close()
+             self.assertRaises(ValueError, fp.readable)
+             self.assertRaises(ValueError, fp.writable)
+             self.assertRaises(ValueError, fp.seekable)
+ 
 +    def test_pickle(self):
 +        sock = socket.socket()
 +        with sock:
 +            for protocol in range(pickle.HIGHEST_PROTOCOL + 1):
 +                self.assertRaises(TypeError, pickle.dumps, sock, protocol)
 +
 +    def test_listen_backlog0(self):
          srv = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
          srv.bind((HOST, 0))
          # backlog = 0

diff --cc Misc/NEWS
index d72a9d5f2529b8e01d367d410b63dec2814bfa17,29e2c1956562292bedac7b682caf4f4ec3efd91c..990f4d6c92f963dcd521234ec5bd2f1ea9250bda
--- 1/Misc/NEWS
--- 2/Misc/NEWS
+++ b/Misc/NEWS
@@@ -26,98 -21,101 +26,102 @@@ Core and Builtin
  - Issue #15801: Make sure mappings passed to '%' formatting are actually
    subscriptable.
  
 -- Issue #15726: Fix incorrect bounds checking in PyState_FindModule.
 -  Patch by Robin Schreiber.
 +Library
 +-------
  
 -- Issue #15604: Update uses of PyObject_IsTrue() to check for and handle
 -  errors correctly.  Patch by Serhiy Storchaka.
++- Issue #15842: the SocketIO.{readable,writable,seekable} methods now
++  raise ValueError when the file-like object is closed.  Patch by Alessandro
++  Moura.
+ 
 -- Issue #13119: sys.stdout and sys.stderr are now using "\r\n" newline on
 -  Windows, as Python 2.
 +- Issue #15882: Change _decimal to accept any coefficient tuple when
 +  constructing infinities. This is done for backwards compatibility
 +  with decimal.py: Infinity coefficients are undefined in _decimal
 +  (in accordance with the specification).
  
 -- Issue #14579: Fix CVE-2012-2135: vulnerability in the utf-16 decoder after
 -  error handling.  Patch by Serhiy Storchaka.
 +- Issue #15876: Fix a refleak in the curses module: window.encoding.
  
 -- Issue #15404: Refleak in PyMethodObject repr.
 +- Issue #15881: Fixed atexit hook in multiprocessing.  Original patch
 +  by Chris McDonough.
  
 -- Issue #15394: An issue in PyModule_Create that caused references to
 -  be leaked on some error paths has been fixed.  Patch by Julia Lawall.
 +- Issue #15340: Fix importing the random module when /dev/urandom cannot
 +  be opened.  This was a regression caused by the hash randomization patch.
  
 -- Issue #15368: An issue that caused bytecode generation to be
 -  non-deterministic when using randomized hashing (-R) has been fixed.
 +- Issue #15841: The readable(), writable() and seekable() methods of BytesIO
 +  and StringIO objects now raise ValueError when the object has been closed.
 +  Patch by Alessandro Moura.
  
 -- Issue #15020: The program name used to search for Python's path is now
 -  "python3" under Unix, not "python".
 +- Issue #15447: Use subprocess.DEVNULL in webbrowser, instead of opening
 +  os.devnull explicitly and leaving it open.
  
 -- Issue #15033: Fix the exit status bug when modules invoked using -m swith,
 -  return the proper failure return value (1). Patch contributed by Jeff Knupp.
 +- Issue #15509: webbrowser.UnixBrowser no longer passes empty arguments to
 +  Popen when %action substitutions produce empty strings.
  
 -- Issue #12268: File readline, readlines and read() or readall() methods
 -  no longer lose data when an underlying read system call is interrupted.
 -  IOError is no longer raised due to a read system call returning EINTR
 -  from within these methods.
 +- Issue #12776,#11839: call argparse type function (specified by add_argument)
 +  only once. Before, the type function was called twice in the case where the
 +  default was specified and the argument was given as well.  This was
 +  especially problematic for the FileType type, as a default file would always
 +  be opened, even if a file argument was specified on the command line.
  
 -- Issue #15142: Fix reference leak when deallocating instances of types
 -  created using PyType_FromSpec().
 +- Issue #15906: Fix a regression in argparse caused by the preceding change,
 +  when action='append', type='str' and default=[].
  
 -- Issue #10053: Don't close FDs when FileIO.__init__ fails. Loosely based on
 -  the work by Hirokazu Yamamoto.
 +Extension Modules
 +-----------------
  
 -- Issue #14775: Fix a potential quadratic dict build-up due to the garbage
 -  collector repeatedly trying to untrack dicts.
 +Tests
 +-----
  
 -- Issue #14494: Fix __future__.py and its documentation to note that
 -  absolute imports are the default behavior in 3.0 instead of 2.7.
 -  Patch by Sven Marnach.
 +- Issue #15802: Fix test logic in TestMaildir.test_create_tmp. Patch
 +  by Serhiy Storchaka.
  
 -- Issue #14761: Fix potential leak on an error case in the import machinery.
 +- Issue #15557: Added a test suite for the webbrowser module, thanks
 +  to Anton Barkovsky.
  
 -- Issue #14699: Fix calling the classmethod descriptor directly.
 +Build
 +-----
  
 -- Issue #14433: Prevent msvcrt crash in interactive prompt when stdin
 -  is closed.
 +- Issue #15819: Make sure we can build Python out-of-tree from a readonly
 +  source directory.  (Somewhat related to Issue #9860.)
  
 -- Issue #11603 (again): Setting __repr__ to __str__ now raises a RuntimeError
 -  when repr() or str() is called on such an object.
 +Documentation
 +-------------
  
 -- Issue #14658: Fix binding a special method to a builtin implementation of a
 -  special method with a different name.
 +- Issue #11964: Document a change in v3.2 to the behavior of the indent
 +  parameter of json encoding operations.
  
 -- Issue #14630: Fix a memory access bug for instances of a subclass of int
 -  with value 0.
 +Tools/Demos
 +-----------
  
 -- Issue #14612: Fix jumping around with blocks by setting f_lineno.
  
 -- Issue #14607: Fix keyword-only arguments which started with ``__``.
 +What's New in Python 3.3.0?
 +===========================
  
 -- Issue #13889: Check and (if necessary) set FPU control word before calling
 -  any of the dtoa.c string <-> float conversion functions, on MSVC builds of
 -  Python.  This fixes issues when embedding Python in a Delphi app.
 +*Release date: XX-Sep-2012*
  
 -- Issue #14474: Save and restore exception state in thread.start_new_thread()
 -  while writing error message if the thread leaves a unhandled exception.
 +Core and Builtins
 +-----------------
  
 -- Issue #13019: Fix potential reference leaks in bytearray.extend().  Patch
 -  by Suman Saha.
 +Library
 +-------
  
 -- Issue #14378: Fix compiling ast.ImportFrom nodes with a "__future__" string as
 -  the module name that was not interned.
  
 -- Issue #14331: Use significantly less stack space when importing modules by
 -  allocating path buffers on the heap instead of the stack.
 +What's New in Python 3.3.0 Release Candidate 2?
 +===============================================
  
 -- Issue #14334: Prevent in a segfault in type.__getattribute__ when it was not
 -  passed strings.
 +*Release date: 09-Sep-2012*
  
 -- Issue #1469629: Allow cycles through an object's __dict__ slot to be
 -  collected. (For example if ``x.__dict__ is x``).
 +Core and Builtins
 +-----------------
  
 -- Issue #14172: Fix reference leak when marshalling a buffer-like object
 -  (other than a bytes object).
 +- Issue #13992: The trashcan mechanism is now thread-safe.  This eliminates
 +  sporadic crashes in multi-thread programs when several long deallocator
 +  chains ran concurrently and involved subclasses of built-in container
 +  types.
  
 -- Issue #13521: dict.setdefault() now does only one lookup for the given key,
 -  making it "atomic" for many purposes.  Patch by Filip Gruszczyński.
 +- Issue #15784: Modify OSError.__str__() to better distinguish between
 +  errno error numbers and Windows error numbers.
  
 -- Issue #14471: Fix a possible buffer overrun in the winreg module.
 +- Issue #15781: Fix two small race conditions in import's module locking.
  
  Library
  -------