Change os.sendfile so its arguments are stable

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This issue has not been assessed yet.

Description

assignee = 'https://github.com/larryhastings'
closed_at = None
created_at = <Date 2012-06-15.10:53:38.116>
labels = ['type-bug']
title = 'Change os.sendfile so its arguments are stable'
updated_at = <Date 2012-06-23.23:08:19.144>
user = 'https://github.com/larryhastings'

activity = <Date 2012-06-23.23:08:19.144>
actor = 'larry'
assignee = 'larry'
closed = False
closed_date = None
closer = None
components = []
creation = <Date 2012-06-15.10:53:38.116>
creator = 'larry'
dependencies = []
files = []
hgrepos = []
issue_num = 15078
keywords = []
message_count = 11.0
messages = ['162886', '162900', '162937', '162939', '162946', '163006', '163545', '163548', '163550', '163555', '163692']
nosy_count = 6.0
nosy_names = ['loewis', 'vstinner', 'larry', 'giampaolo.rodola', 'neologix', 'serhiy.storchaka']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue15078'
versions = ['Python 3.3']

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