PyPycLoader can't read cached .pyc files

Lib/importlib/abc.py

 """Abstract base classes related to import."""
 from . import _bootstrap
 from . import machinery
 try:
     import _frozen_importlib
 except ImportError as exc:
     if exc.name != '_frozen_importlib':
         raise
     _frozen_importlib = None
 import abc
@@ skipping 305 matching lines @@
         if source_path is None:
             message = "a source path must exist to load {0}".format(fullname)
             raise ImportError(message, name=fullname)
         source = self.get_data(source_path)
         code_object = compile(source, source_path, 'exec', dont_inherit=True)
         # Generate bytecode and write it out.
         if not sys.dont_write_bytecode:
             bytecode = marshal.dumps(code_object)
             data = bytearray(imp.get_magic())
             data.extend(_bootstrap._w_long(source_timestamp))
-            data.extend(_bootstrap._w_long(len(bytecode)))

[brett.cannon, 2012/06/28 17:08:02]

It is the length of the source, not the bytecode; see
Lib/importlib/_bootstrap.py:SourceLoader.get_code() for how importlib already
does it.

+            data.extend(_bootstrap._w_long(len(source)))
             data.extend(bytecode)
             self.write_bytecode(fullname, data)
         return code_object
 
     @abc.abstractmethod
     def source_mtime(self, fullname):
         """Abstract method. Accepts a str filename and returns an int
         modification time for the source of the module."""
         raise NotImplementedError
 
     @abc.abstractmethod
     def bytecode_path(self, fullname):
         """Abstract method. Accepts a str filename and returns the str pathname
         to the bytecode for the module."""
         raise NotImplementedError
 
     @abc.abstractmethod
     def write_bytecode(self, fullname, bytecode):
         """Abstract method.  Accepts a str filename and bytes object
         representing the bytecode for the module.  Returns a boolean
         representing whether the bytecode was written or not."""
         raise NotImplementedError