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Fix infinite loop in email folding logic (GH-12732)

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As far as I can tell, this infinite loop would be triggered if:

1. The value being folded contains a single word (no spaces) longer than
   max_line_length
2. The max_line_length is shorter than the encoding's name + 9
   characters.

bpo-36564: https://bugs.python.org/issue36564
This commit is contained in:
Paul Ganssle 2019-07-16 19:50:01 +02:00 • committed by Barry Warsaw
parent 1d8b04edfd
commit f69d5c6198
4 changed files with 35 additions and 6 deletions
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1
Lib/email/parser.py
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@ -13,7 +13,6 @@
from email._policybase import compat32
class Parser:
def __init__(self, _class=None, *, policy=compat32):
"""Parser of RFC 2822 and MIME email messages.