Null Dereference "subname" in zipimport.c

[Pankaj]

BPO	25321
Nosy	@Yhg1s, @benjaminp, @pankaj
Files	Python-2.7.10-zipimport-01.patch: Python-2.7.10-zipimport-01

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = None
closed_at = <Date 2015-10-07.02:11:53.195>
created_at = <Date 2015-10-06.05:47:16.384>
labels = ['invalid', 'library', 'type-crash']
title = 'Null Dereference  "subname" in zipimport.c'
updated_at = <Date 2015-10-07.02:11:53.194>
user = 'https://github.com/Pankaj'

bugs.python.org fields:

activity = <Date 2015-10-07.02:11:53.194>
actor = 'benjamin.peterson'
assignee = 'none'
closed = True
closed_date = <Date 2015-10-07.02:11:53.195>
closer = 'benjamin.peterson'
components = ['Library (Lib)']
creation = <Date 2015-10-06.05:47:16.384>
creator = 'pankaj.s01'
dependencies = []
files = ['40695']
hgrepos = []
issue_num = 25321
keywords = ['patch']
message_count = 2.0
messages = ['252377', '252378']
nosy_count = 3.0
nosy_names = ['twouters', 'benjamin.peterson', 'pankaj.s01']
pr_nums = []
priority = 'normal'
resolution = 'not a bug'
stage = None
status = 'closed'
superseder = None
type = 'crash'
url = 'https://bugs.python.org/issue25321'
versions = ['Python 2.7']

[Pankaj]

Hi ,
The issues reported as String NULL dereferecne at line
Python-2.7.10/Modules/zipimport.c:266 for "subname" which assigned by
get_subname(fullname) at line 264.so there should be check "subname" for NULL and return error,if it is NULL.
the respective patch have been attached ,please review it.
Thanks

[benjaminp]

I don't think get_subname can return NULL.