[issue7467] The zipfile module does not check files' CRCs, including in ZipFile.testzip

[Antoine Pitrou]

Antoine Pitrou <pitrou at free.fr> added the comment:

Actually, there are two places where the internal buffer is trimmed from consumed data:

            self._readbuffer = self._readbuffer[self._offset:] + data
            self._offset = 0

At this point, it seems self._crc_offset should also be reset to zero, otherwise some data will be forgotten on the next read() call.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue7467>
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