Reverting last commit. I had some staled data from an attempted svnmerge in my local sandbox

7 files changed, 6 insertions, 683 deletions

diff --git a/Doc/library/exceptions.rst b/Doc/library/exceptions.rst
index 3c404e4..d29ce12 100644
--- a/Doc/library/exceptions.rst
+++ b/Doc/library/exceptions.rst
@@ -135,13 +135,6 @@ The following exceptions are the exceptions that are actually raised.
 
 .. exception:: GeneratorExit
 
-     Raise when a :term:`generator`\'s :meth:`close` method is called.  It
-     directly inherits from :exc:`BaseException` instead of :exc:`Exception` since
-     it is technically not an error.
-
-    .. versionchanged:: 3.0 
-       Changed to inherit from :exc:`BaseException`.
-
    Raise when a :term:`generator`\'s :meth:`close` method is called.
 
 
diff --git a/Doc/reference/expressions.rst b/Doc/reference/expressions.rst
index 4bb0074..64f620b 100644
--- a/Doc/reference/expressions.rst
+++ b/Doc/reference/expressions.rst
@@ -413,6 +413,9 @@ generator functions::
    ...         while True:
    ...             try:
    ...                 value = (yield value)
+   ...             except GeneratorExit:
+   ...                 # never catch GeneratorExit
+   ...                 raise
    ...             except Exception, e:
    ...                 value = e
    ...     finally:
diff --git a/Lib/distutils/msvc9compiler.py b/Lib/distutils/msvc9compiler.py
deleted file mode 100644
index a6cff2c..0000000
--- a/Lib/distutils/msvc9compiler.py
+++ /dev/null
@@ -1,658 +0,0 @@
-"""distutils.msvc9compiler
-
-Contains MSVCCompiler, an implementation of the abstract CCompiler class
-for the Microsoft Visual Studio 2008.
-
-The module is compatible with VS 2005 and VS 2008. You can find legacy support
-for older versions of VS in distutils.msvccompiler.
-"""
-
-# Written by Perry Stoll
-# hacked by Robin Becker and Thomas Heller to do a better job of
-#   finding DevStudio (through the registry)
-# ported to VS2005 and VS 2008 by Christian Heimes
-
-__revision__ = "$Id$"
-
-import os
-import subprocess
-import sys
-from distutils.errors import (DistutilsExecError, DistutilsPlatformError,
-    CompileError, LibError, LinkError)
-from distutils.ccompiler import (CCompiler, gen_preprocess_options,
-    gen_lib_options)
-from distutils import log
-
-import _winreg
-
-RegOpenKeyEx = _winreg.OpenKeyEx
-RegEnumKey = _winreg.EnumKey
-RegEnumValue = _winreg.EnumValue
-RegError = _winreg.error
-
-HKEYS = (_winreg.HKEY_USERS,
-         _winreg.HKEY_CURRENT_USER,
-         _winreg.HKEY_LOCAL_MACHINE,
-         _winreg.HKEY_CLASSES_ROOT)
-
-VS_BASE = r"Software\Microsoft\VisualStudio\%0.1f"
-WINSDK_BASE = r"Software\Microsoft\Microsoft SDKs\Windows"
-NET_BASE = r"Software\Microsoft\.NETFramework"
-ARCHS = {'DEFAULT' : 'x86',
-    'intel' : 'x86', 'x86' : 'x86',
-    'amd64' : 'x64', 'x64' : 'x64',
-    'itanium' : 'ia64', 'ia64' : 'ia64',
-    }
-
-# The globals VERSION, ARCH, MACROS and VC_ENV are defined later
-
-class Reg:
-    """Helper class to read values from the registry
-    """
-
-    @classmethod
-    def get_value(cls, path, key):
-        for base in HKEYS:
-            d = cls.read_values(base, path)
-            if d and key in d:
-                return d[key]
-        raise KeyError(key)
-
-    @classmethod
-    def read_keys(cls, base, key):
-        """Return list of registry keys."""
-        try:
-            handle = RegOpenKeyEx(base, key)
-        except RegError:
-            return None
-        L = []
-        i = 0
-        while True:
-            try:
-                k = RegEnumKey(handle, i)
-            except RegError:
-                break
-            L.append(k)
-            i += 1
-        return L
-
-    @classmethod
-    def read_values(cls, base, key):
-        """Return dict of registry keys and values.
-
-        All names are converted to lowercase.
-        """
-        try:
-            handle = RegOpenKeyEx(base, key)
-        except RegError:
-            return None
-        d = {}
-        i = 0
-        while True:
-            try:
-                name, value, type = RegEnumValue(handle, i)
-            except RegError:
-                break
-            name = name.lower()
-            d[cls.convert_mbcs(name)] = cls.convert_mbcs(value)
-            i += 1
-        return d
-
-    @staticmethod
-    def convert_mbcs(s):
-        dec = getattr(s, "decode", None)
-        if dec is not None:
-            try:
-                s = dec("mbcs")
-            except UnicodeError:
-                pass
-        return s
-
-class MacroExpander:
-
-    def __init__(self, version):
-        self.macros = {}
-        self.vsbase = VS_BASE % version
-        self.load_macros(version)
-
-    def set_macro(self, macro, path, key):
-        self.macros["$(%s)" % macro] = Reg.get_value(path, key)
-
-    def load_macros(self, version):
-        self.set_macro("VCInstallDir", self.vsbase + r"\Setup\VC", "productdir")
-        self.set_macro("VSInstallDir", self.vsbase + r"\Setup\VS", "productdir")
-        self.set_macro("FrameworkDir", NET_BASE, "installroot")
-        try:
-            if version >= 8.0:
-                self.set_macro("FrameworkSDKDir", NET_BASE,
-                               "sdkinstallrootv2.0")
-            else:
-                raise KeyError("sdkinstallrootv2.0")
-        except KeyError as exc: #
-            raise DistutilsPlatformError(
-            """Python was built with Visual Studio 2008;
-extensions must be built with a compiler than can generate compatible binaries.
-Visual Studio 2008 was not found on this system. If you have Cygwin installed,
-you can try compiling with MingW32, by passing "-c mingw32" to setup.py.""")
-
-        if version >= 9.0:
-            self.set_macro("FrameworkVersion", self.vsbase, "clr version")
-            self.set_macro("WindowsSdkDir", WINSDK_BASE, "currentinstallfolder")
-        else:
-            p = r"Software\Microsoft\NET Framework Setup\Product"
-            for base in HKEYS:
-                try:
-                    h = RegOpenKeyEx(base, p)
-                except RegError:
-                    continue
-                key = RegEnumKey(h, 0)
-                d = Reg.get_value(base, r"%s\%s" % (p, key))
-                self.macros["$(FrameworkVersion)"] = d["version"]
-
-    def sub(self, s):
-        for k, v in self.macros.items():
-            s = s.replace(k, v)
-        return s
-
-def get_build_version():
-    """Return the version of MSVC that was used to build Python.
-
-    For Python 2.3 and up, the version number is included in
-    sys.version.  For earlier versions, assume the compiler is MSVC 6.
-    """
-    prefix = "MSC v."
-    i = sys.version.find(prefix)
-    if i == -1:
-        return 6
-    i = i + len(prefix)
-    s, rest = sys.version[i:].split(" ", 1)
-    majorVersion = int(s[:-2]) - 6
-    minorVersion = int(s[2:3]) / 10.0
-    # I don't think paths are affected by minor version in version 6
-    if majorVersion == 6:
-        minorVersion = 0
-    if majorVersion >= 6:
-        return majorVersion + minorVersion
-    # else we don't know what version of the compiler this is
-    return None
-
-def get_build_architecture():
-    """Return the processor architecture.
-
-    Possible results are "x86" or "amd64".
-    """
-    prefix = " bit ("
-    i = sys.version.find(prefix)
-    if i == -1:
-        return "x86"
-    j = sys.version.find(")", i)
-    sysarch = sys.version[i+len(prefix):j].lower()
-    arch = ARCHS.get(sysarch, None)
-    if arch is None:
-        return ARCHS['DEFAULT']
-    else:
-        return arch
-
-def normalize_and_reduce_paths(paths):
-    """Return a list of normalized paths with duplicates removed.
-
-    The current order of paths is maintained.
-    """
-    # Paths are normalized so things like:  /a and /a/ aren't both preserved.
-    reduced_paths = []
-    for p in paths:
-        np = os.path.normpath(p)
-        # XXX(nnorwitz): O(n**2), if reduced_paths gets long perhaps use a set.
-        if np not in reduced_paths:
-            reduced_paths.append(np)
-    return reduced_paths
-
-def find_vcvarsall(version):
-    """Find the vcvarsall.bat file
-
-    At first it tries to find the productdir of VS 2008 in the registry. If
-    that fails it falls back to the VS90COMNTOOLS env var.
-    """
-    vsbase = VS_BASE % version
-    try:
-        productdir = Reg.get_value(r"%s\Setup\VC" % vsbase,
-                                   "productdir")
-    except KeyError:
-        log.debug("Unable to find productdir in registry")
-        productdir = None
-
-    if not productdir or not os.path.isdir(productdir):
-        toolskey = "VS%0.f0COMNTOOLS" % version
-        toolsdir = os.environ.get(toolskey, None)
-
-        if toolsdir and os.path.isdir(toolsdir):
-            productdir = os.path.join(toolsdir, os.pardir, os.pardir, "VC")
-            productdir = os.path.abspath(productdir)
-            if not os.path.isdir(productdir):
-                log.debug("%s is not a valid directory" % productdir)
-                return None
-        else:
-            log.debug("Env var %s is not set or invalid" % toolskey)
-    if not productdir:
-        log.debug("No productdir found")
-        return None
-    vcvarsall = os.path.join(productdir, "vcvarsall.bat")
-    if os.path.isfile(vcvarsall):
-        return vcvarsall
-    log.debug("Unable to find vcvarsall.bat")
-    return None
-
-def query_vcvarsall(version, arch="x86"):
-    """Launch vcvarsall.bat and read the settings from its environment
-    """
-    vcvarsall = find_vcvarsall(version)
-    interesting = set(("include", "lib", "libpath", "path"))
-    result = {}
-
-    if vcvarsall is None:
-        raise IOError("Unable to find vcvarsall.bat")
-    popen = subprocess.Popen('"%s" %s & set' % (vcvarsall, arch),
-                             stdout=subprocess.PIPE,
-                             stderr=subprocess.PIPE)
-    if popen.wait() != 0:
-        raise IOError(popen.stderr.read())
-
-    for line in popen.stdout:
-        line = Reg.convert_mbcs(line)
-        if '=' not in line:
-            continue
-        line = line.strip()
-        key, value = line.split('=')
-        key = key.lower()
-        if key in interesting:
-            if value.endswith(os.pathsep):
-                value = value[:-1]
-            result[key] = value
-
-    if len(result) != len(interesting):
-        raise ValueError(str(list(result.keys())))
-
-    return result
-
-# More globals
-VERSION = get_build_version()
-if VERSION < 8.0:
-    raise DistutilsPlatformError("VC %0.1f is not supported by this module" % VERSION)
-ARCH = get_build_architecture()
-# MACROS = MacroExpander(VERSION)
-VC_ENV = query_vcvarsall(VERSION, ARCH)
-
-class MSVCCompiler(CCompiler) :
-    """Concrete class that implements an interface to Microsoft Visual C++,
-       as defined by the CCompiler abstract class."""
-
-    compiler_type = 'msvc'
-
-    # Just set this so CCompiler's constructor doesn't barf.  We currently
-    # don't use the 'set_executables()' bureaucracy provided by CCompiler,
-    # as it really isn't necessary for this sort of single-compiler class.
-    # Would be nice to have a consistent interface with UnixCCompiler,
-    # though, so it's worth thinking about.
-    executables = {}
-
-    # Private class data (need to distinguish C from C++ source for compiler)
-    _c_extensions = ['.c']
-    _cpp_extensions = ['.cc', '.cpp', '.cxx']
-    _rc_extensions = ['.rc']
-    _mc_extensions = ['.mc']
-
-    # Needed for the filename generation methods provided by the
-    # base class, CCompiler.
-    src_extensions = (_c_extensions + _cpp_extensions +
-                      _rc_extensions + _mc_extensions)
-    res_extension = '.res'
-    obj_extension = '.obj'
-    static_lib_extension = '.lib'
-    shared_lib_extension = '.dll'
-    static_lib_format = shared_lib_format = '%s%s'
-    exe_extension = '.exe'
-
-    def __init__(self, verbose=0, dry_run=0, force=0):
-        CCompiler.__init__ (self, verbose, dry_run, force)
-        self.__version = VERSION
-        self.__arch = ARCH
-        self.__root = r"Software\Microsoft\VisualStudio"
-        # self.__macros = MACROS
-        self.__path = []
-        self.initialized = False
-
-    def initialize(self):
-        if "DISTUTILS_USE_SDK" in os.environ and "MSSdk" in os.environ and self.find_exe("cl.exe"):
-            # Assume that the SDK set up everything alright; don't try to be
-            # smarter
-            self.cc = "cl.exe"
-            self.linker = "link.exe"
-            self.lib = "lib.exe"
-            self.rc = "rc.exe"
-            self.mc = "mc.exe"
-        else:
-            self.__paths = VC_ENV['path'].split(os.pathsep)
-            os.environ['lib'] = VC_ENV['lib']
-            os.environ['include'] = VC_ENV['include']
-
-            if len(self.__paths) == 0:
-                raise DistutilsPlatformError("Python was built with %s, "
-                       "and extensions need to be built with the same "
-                       "version of the compiler, but it isn't installed."
-                       % self.__product)
-
-            self.cc = self.find_exe("cl.exe")
-            self.linker = self.find_exe("link.exe")
-            self.lib = self.find_exe("lib.exe")
-            self.rc = self.find_exe("rc.exe")   # resource compiler
-            self.mc = self.find_exe("mc.exe")   # message compiler
-            #self.set_path_env_var('lib')
-            #self.set_path_env_var('include')
-
-        # extend the MSVC path with the current path
-        try:
-            for p in os.environ['path'].split(';'):
-                self.__paths.append(p)
-        except KeyError:
-            pass
-        self.__paths = normalize_and_reduce_paths(self.__paths)
-        os.environ['path'] = ";".join(self.__paths)
-
-        self.preprocess_options = None
-        if self.__arch == "x86":
-            self.compile_options = [ '/nologo', '/Ox', '/MD', '/W3',
-                                     '/DNDEBUG']
-            self.compile_options_debug = ['/nologo', '/Od', '/MDd', '/W3',
-                                          '/Z7', '/D_DEBUG']
-        else:
-            # Win64
-            self.compile_options = [ '/nologo', '/Ox', '/MD', '/W3', '/GS-' ,
-                                     '/DNDEBUG']
-            self.compile_options_debug = ['/nologo', '/Od', '/MDd', '/W3', '/GS-',
-                                          '/Z7', '/D_DEBUG']
-
-        self.ldflags_shared = ['/DLL', '/nologo', '/INCREMENTAL:NO']
-        if self.__version >= 7:
-            self.ldflags_shared_debug = [
-                '/DLL', '/nologo', '/INCREMENTAL:no', '/DEBUG', '/pdb:None'
-                ]
-        self.ldflags_static = [ '/nologo']
-
-        self.initialized = True
-
-    # -- Worker methods ------------------------------------------------
-
-    def object_filenames(self,
-                         source_filenames,
-                         strip_dir=0,
-                         output_dir=''):
-        # Copied from ccompiler.py, extended to return .res as 'object'-file
-        # for .rc input file
-        if output_dir is None: output_dir = ''
-        obj_names = []
-        for src_name in source_filenames:
-            (base, ext) = os.path.splitext (src_name)
-            base = os.path.splitdrive(base)[1] # Chop off the drive
-            base = base[os.path.isabs(base):]  # If abs, chop off leading /
-            if ext not in self.src_extensions:
-                # Better to raise an exception instead of silently continuing
-                # and later complain about sources and targets having
-                # different lengths
-                raise CompileError ("Don't know how to compile %s" % src_name)
-            if strip_dir:
-                base = os.path.basename (base)
-            if ext in self._rc_extensions:
-                obj_names.append (os.path.join (output_dir,
-                                                base + self.res_extension))
-            elif ext in self._mc_extensions:
-                obj_names.append (os.path.join (output_dir,
-                                                base + self.res_extension))
-            else:
-                obj_names.append (os.path.join (output_dir,
-                                                base + self.obj_extension))
-        return obj_names
-
-
-    def compile(self, sources,
-                output_dir=None, macros=None, include_dirs=None, debug=0,
-                extra_preargs=None, extra_postargs=None, depends=None):
-
-        if not self.initialized:
-            self.initialize()
-        compile_info = self._setup_compile(output_dir, macros, include_dirs,
-                                           sources, depends, extra_postargs)
-        macros, objects, extra_postargs, pp_opts, build = compile_info
-
-        compile_opts = extra_preargs or []
-        compile_opts.append ('/c')
-        if debug:
-            compile_opts.extend(self.compile_options_debug)
-        else:
-            compile_opts.extend(self.compile_options)
-
-        for obj in objects:
-            try:
-                src, ext = build[obj]
-            except KeyError:
-                continue
-            if debug:
-                # pass the full pathname to MSVC in debug mode,
-                # this allows the debugger to find the source file
-                # without asking the user to browse for it
-                src = os.path.abspath(src)
-
-            if ext in self._c_extensions:
-                input_opt = "/Tc" + src
-            elif ext in self._cpp_extensions:
-                input_opt = "/Tp" + src
-            elif ext in self._rc_extensions:
-                # compile .RC to .RES file
-                input_opt = src
-                output_opt = "/fo" + obj
-                try:
-                    self.spawn([self.rc] + pp_opts +
-                               [output_opt] + [input_opt])
-                except DistutilsExecError as msg:
-                    raise CompileError(msg)
-                continue
-            elif ext in self._mc_extensions:
-                # Compile .MC to .RC file to .RES file.
-                #   * '-h dir' specifies the directory for the
-                #     generated include file
-                #   * '-r dir' specifies the target directory of the
-                #     generated RC file and the binary message resource
-                #     it includes
-                #
-                # For now (since there are no options to change this),
-                # we use the source-directory for the include file and
-                # the build directory for the RC file and message
-                # resources. This works at least for win32all.
-                h_dir = os.path.dirname(src)
-                rc_dir = os.path.dirname(obj)
-                try:
-                    # first compile .MC to .RC and .H file
-                    self.spawn([self.mc] +
-                               ['-h', h_dir, '-r', rc_dir] + [src])
-                    base, _ = os.path.splitext (os.path.basename (src))
-                    rc_file = os.path.join (rc_dir, base + '.rc')
-                    # then compile .RC to .RES file
-                    self.spawn([self.rc] +
-                               ["/fo" + obj] + [rc_file])
-
-                except DistutilsExecError as msg:
-                    raise CompileError(msg)
-                continue
-            else:
-                # how to handle this file?
-                raise CompileError("Don't know how to compile %s to %s"
-                                   % (src, obj))
-
-            output_opt = "/Fo" + obj
-            try:
-                self.spawn([self.cc] + compile_opts + pp_opts +
-                           [input_opt, output_opt] +
-                           extra_postargs)
-            except DistutilsExecError as msg:
-                raise CompileError(msg)
-
-        return objects
-
-
-    def create_static_lib(self,
-                          objects,
-                          output_libname,
-                          output_dir=None,
-                          debug=0,
-                          target_lang=None):
-
-        if not self.initialized:
-            self.initialize()
-        (objects, output_dir) = self._fix_object_args(objects, output_dir)
-        output_filename = self.library_filename(output_libname,
-                                                output_dir=output_dir)
-
-        if self._need_link(objects, output_filename):
-            lib_args = objects + ['/OUT:' + output_filename]
-            if debug:
-                pass # XXX what goes here?
-            try:
-                self.spawn([self.lib] + lib_args)
-            except DistutilsExecError as msg:
-                raise LibError(msg)
-        else:
-            log.debug("skipping %s (up-to-date)", output_filename)
-
-
-    def link(self,
-             target_desc,
-             objects,
-             output_filename,
-             output_dir=None,
-             libraries=None,
-             library_dirs=None,
-             runtime_library_dirs=None,
-             export_symbols=None,
-             debug=0,
-             extra_preargs=None,
-             extra_postargs=None,
-             build_temp=None,
-             target_lang=None):
-
-        if not self.initialized:
-            self.initialize()
-        (objects, output_dir) = self._fix_object_args(objects, output_dir)
-        fixed_args = self._fix_lib_args(libraries, library_dirs,
-                                        runtime_library_dirs)
-        (libraries, library_dirs, runtime_library_dirs) = fixed_args
-
-        if runtime_library_dirs:
-            self.warn ("I don't know what to do with 'runtime_library_dirs': "
-                       + str (runtime_library_dirs))
-
-        lib_opts = gen_lib_options(self,
-                                   library_dirs, runtime_library_dirs,
-                                   libraries)
-        if output_dir is not None:
-            output_filename = os.path.join(output_dir, output_filename)
-
-        if self._need_link(objects, output_filename):
-            if target_desc == CCompiler.EXECUTABLE:
-                if debug:
-                    ldflags = self.ldflags_shared_debug[1:]
-                else:
-                    ldflags = self.ldflags_shared[1:]
-            else:
-                if debug:
-                    ldflags = self.ldflags_shared_debug
-                else:
-                    ldflags = self.ldflags_shared
-
-            export_opts = []
-            for sym in (export_symbols or []):
-                export_opts.append("/EXPORT:" + sym)
-
-            ld_args = (ldflags + lib_opts + export_opts +
-                       objects + ['/OUT:' + output_filename])
-
-            # The MSVC linker generates .lib and .exp files, which cannot be
-            # suppressed by any linker switches. The .lib files may even be
-            # needed! Make sure they are generated in the temporary build
-            # directory. Since they have different names for debug and release
-            # builds, they can go into the same directory.
-            if export_symbols is not None:
-                (dll_name, dll_ext) = os.path.splitext(
-                    os.path.basename(output_filename))
-                implib_file = os.path.join(
-                    os.path.dirname(objects[0]),
-                    self.library_filename(dll_name))
-                ld_args.append ('/IMPLIB:' + implib_file)
-
-            if extra_preargs:
-                ld_args[:0] = extra_preargs
-            if extra_postargs:
-                ld_args.extend(extra_postargs)
-
-            self.mkpath(os.path.dirname(output_filename))
-            try:
-                self.spawn([self.linker] + ld_args)
-            except DistutilsExecError as msg:
-                raise LinkError(msg)
-
-        else:
-            log.debug("skipping %s (up-to-date)", output_filename)
-
-
-    # -- Miscellaneous methods -----------------------------------------
-    # These are all used by the 'gen_lib_options() function, in
-    # ccompiler.py.
-
-    def library_dir_option(self, dir):
-        return "/LIBPATH:" + dir
-
-    def runtime_library_dir_option(self, dir):
-        raise DistutilsPlatformError(
-              "don't know how to set runtime library search path for MSVC++")
-
-    def library_option(self, lib):
-        return self.library_filename(lib)
-
-
-    def find_library_file(self, dirs, lib, debug=0):
-        # Prefer a debugging library if found (and requested), but deal
-        # with it if we don't have one.
-        if debug:
-            try_names = [lib + "_d", lib]
-        else:
-            try_names = [lib]
-        for dir in dirs:
-            for name in try_names:
-                libfile = os.path.join(dir, self.library_filename (name))
-                if os.path.exists(libfile):
-                    return libfile
-        else:
-            # Oops, didn't find it in *any* of 'dirs'
-            return None
-
-    # Helper methods for using the MSVC registry settings
-
-    def find_exe(self, exe):
-        """Return path to an MSVC executable program.
-
-        Tries to find the program in several places: first, one of the
-        MSVC program search paths from the registry; next, the directories
-        in the PATH environment variable.  If any of those work, return an
-        absolute path that is known to exist.  If none of them work, just
-        return the original program name, 'exe'.
-        """
-        for p in self.__paths:
-            fn = os.path.join(os.path.abspath(p), exe)
-            if os.path.isfile(fn):
-                return fn
-
-        # didn't find it; try existing path
-        for p in os.environ['Path'].split(';'):
-            fn = os.path.join(os.path.abspath(p),exe)
-            if os.path.isfile(fn):
-                return fn
-
-        return exe
diff --git a/Lib/test/exception_hierarchy.txt b/Lib/test/exception_hierarchy.txt
index 73ccb66..965252c 100644
--- a/Lib/test/exception_hierarchy.txt
+++ b/Lib/test/exception_hierarchy.txt
@@ -1,8 +1,8 @@
 BaseException
  +-- SystemExit
  +-- KeyboardInterrupt
- +-- GeneratorExit
  +-- Exception
+      +-- GeneratorExit
       +-- StopIteration
       +-- ArithmeticError
       |    +-- FloatingPointError
diff --git a/Lib/test/test_generators.py b/Lib/test/test_generators.py
index 0d6908d..4710c8c 100644
--- a/Lib/test/test_generators.py
+++ b/Lib/test/test_generators.py
@@ -1668,19 +1668,6 @@ And finalization:
 exiting
 
 
-GeneratorExit is not caught by except Exception:
-
->>> def f():
-...     try: yield
-...     except Exception: print 'except'
-...     finally: print 'finally'
-
->>> g = f()
->>> g.next()
->>> del g
-finally
-
-
 Now let's try some ill-behaved generators:
 
 >>> def f():
diff --git a/Misc/NEWS b/Misc/NEWS
index 0c6dd45..465026a 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -245,8 +245,6 @@ Extension Modules
   * operator module: div, idiv, __div__, __idiv__, isCallable, sequenceIncludes
   * sys module: exc_clear(), exc_type, exc_value, exc_traceback
 
-- Issue #1537: Changed GeneratorExit's base class from Exception to BaseException.
-
 
 Library
 -------
diff --git a/Objects/exceptions.c b/Objects/exceptions.c
index cbcda7b..4c6a122 100644
--- a/Objects/exceptions.c
+++ b/Objects/exceptions.c
@@ -424,9 +424,9 @@ SimpleExtendsException(PyExc_Exception, StopIteration,
 
 
 /*
- *    GeneratorExit extends BaseException
+ *    GeneratorExit extends Exception
  */
-SimpleExtendsException(PyExc_BaseException, GeneratorExit,
+SimpleExtendsException(PyExc_Exception, GeneratorExit,
                        "Request that a generator exit.");