New submission from Takeshi Yoshino <tyosh...@google.com>:
http://docs.python.org/library/zlib.html
says
"If max_length is not supplied then the whole input is decompressed, and
unconsumed_tail is an empty string."
However, if there's preceding decompress call with max_length specified,
unconsumed_tail will not be empty.
----
import zlib
c = zlib.compressobj(zlib.Z_DEFAULT_COMPRESSION, zlib.DEFLATED, -zlib.MAX_WBITS)
compressed = c.compress('abc')
compressed += c.flush(zlib.Z_SYNC_FLUSH)
d = zlib.decompressobj(-zlib.MAX_WBITS)
original = d.decompress(data, 1)
original += d.decompress(d.unconsumed_tail)
print "%r" % d.unconsumed_tail
----
Result is
----
'\x06\x00\x00\x00\xff\xff'
----
Document or code should be fixed.
----------
components: Library (Lib)
messages: 135697
nosy: Takeshi.Yoshino
priority: normal
severity: normal
status: open
title: unconsumed_tail of zlib.Decompress is not always cleared on decompress()
call
type: behavior
versions: Python 2.6
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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue12050>
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