New submission from Daniel Diniz <[EMAIL PROTECTED]>:

The following code leads to XXX Undetected errors in debug builds of
trunk and 3.0:

import _struct
_struct.pack_into(b"8", bytearray(1), None)

Besides that, there's something fishy happening in non-debug builds: 

2.6:
>>> _struct.pack_into(b"8", bytearray(1), None);
>>> _struct.pack_into(b"8", bytearray(1), None);
>>> import sys
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: an integer is required

3.0:
>>> _struct.pack_into(b"8", bytearray(1), None)
>>> _struct.pack_into(b"8", bytearray(1), None)
SystemError: Objects/longobject.c:433: bad argument to internal function


Found with Fusil.

----------
components: Extension Modules
messages: 72005
nosy: ajaksu2
severity: normal
status: open
title: Undetected error in _struct.pack_into
versions: Python 2.6, Python 3.0

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Python tracker <[EMAIL PROTECTED]>
<http://bugs.python.org/issue3694>
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