[New-bugs-announce] [issue1202] zlib.crc32() and adler32() return value

[Armin Rigo]

New submission from Armin Rigo:

The functions zlib.crc32() and zlib.adler32() return a signed value
in the range(-2147483648, 2147483648) on 32-bit platforms, but an
unsigned value in the range(0, 4294967296) on 64-bit platforms.  This
means that half the possible answers are numerically different on these
two kinds of platforms.

Ideally, this should be fixed by having them always return unsigned
numbers (their C return type is unsigned too).  It's unclear if we can
do this without breaking existing code, though :-(

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components: Extension Modules
messages: 56130
nosy: arigo
severity: normal
status: open
title: zlib.crc32() and adler32() return value
type: behavior

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Tracker <report at bugs.python.org>
<http://bugs.python.org/issue1202>
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