xml.sax Contenthandler passes truncated data

[gtreutwein]

BPO	745145
Nosy	@loewis
Files	pysax-error.zip: production of test data and reproducable error detection readXml_2.py

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = None
closed_at = <Date 2003-06-14.07:56:43.000>
created_at = <Date 2003-05-28.20:11:08.000>
labels = ['expert-XML', 'invalid']
title = 'xml.sax Contenthandler passes truncated data'
updated_at = <Date 2003-06-14.07:56:43.000>
user = 'https://bugs.python.org/gtreutwein'

bugs.python.org fields:

activity = <Date 2003-06-14.07:56:43.000>
actor = 'loewis'
assignee = 'none'
closed = True
closed_date = None
closer = None
components = ['XML']
creation = <Date 2003-05-28.20:11:08.000>
creator = 'gtreutwein'
dependencies = []
files = ['904', '905']
hgrepos = []
issue_num = 745145
keywords = []
message_count = 2.0
messages = ['16193', '16194']
nosy_count = 2.0
nosy_names = ['loewis', 'gtreutwein']
pr_nums = []
priority = 'normal'
resolution = 'not a bug'
stage = None
status = 'closed'
superseder = None
type = None
url = 'https://bugs.python.org/issue745145'
versions = []

[gtreutwein]

Error-Message in Python xml.sax module

writeXml_1 generates a xml file ('testOut.xml' )containing
random strings and checksums
'readXml_2 testOut.xml' reads the file and verifies the
checksums

Observation: readXml_2 reports checksum errors. The
error occurs on all tried combinations of (Win2000, Win98
and OpenBSD 3.2) with (Python 2.2.2 and 2.3a1).
The corrupted strings reported are located shortly before
64kByte boundaries in the file.

[loewis]

Logged In: YES
user_id=21627

This is a bug in your code. There is no guarantee that, for
a chunk of PCDATA text, there will only be one .characters
callback; the parser may split this up into multiple calls.

With the attached modified readXml_2.py, the data validate
just fine.