"mmap(size=9223372036854779904) failed" message when running test_io on "AMD64 Snow Leop 3.x" buildbot

[vstinner]

BPO	21733
Nosy	@ronaldoussoren, @vstinner
Superseder	bpo-5614: Malloc errors in test_io

^{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 = 'https://github.com/ronaldoussoren'
closed_at = <Date 2014-06-12.17:22:06.353>
created_at = <Date 2014-06-12.15:01:09.820>
labels = ['OS-mac', 'tests']
title = '"mmap(size=9223372036854779904) failed" message when running test_io on "AMD64 Snow Leop 3.x" buildbot'
updated_at = <Date 2014-06-12.17:22:06.352>
user = 'https://github.com/vstinner'

bugs.python.org fields:

activity = <Date 2014-06-12.17:22:06.352>
actor = 'ned.deily'
assignee = 'ronaldoussoren'
closed = True
closed_date = <Date 2014-06-12.17:22:06.353>
closer = 'ned.deily'
components = ['macOS', 'Tests']
creation = <Date 2014-06-12.15:01:09.820>
creator = 'vstinner'
dependencies = []
files = []
hgrepos = []
issue_num = 21733
keywords = ['buildbot']
message_count = 1.0
messages = ['220356']
nosy_count = 2.0
nosy_names = ['ronaldoussoren', 'vstinner']
pr_nums = []
priority = 'normal'
resolution = 'duplicate'
stage = 'resolved'
status = 'closed'
superseder = '5614'
type = None
url = 'https://bugs.python.org/issue21733'
versions = []

[vstinner]

http://buildbot.python.org/all/builders/AMD64%20Snow%20Leop%203.x/builds/1734/steps/test/logs/stdio

python.exe(59021,0x7fff71296cc0) malloc: *** mmap(size=9223372036854779904) failed (error code=12)
*** error: can't allocate region
*** set a breakpoint in malloc_error_break to debug
python.exe(59021,0x7fff71296cc0) malloc: *** mmap(size=9223372036854779904) failed (error code=12)
*** error: can't allocate region
*** set a breakpoint in malloc_error_break to debug
python.exe(59021,0x7fff71296cc0) malloc: *** mmap(size=9223372036854779904) failed (error code=12)
*** error: can't allocate region
*** set a breakpoint in malloc_error_break to debug
[212/390] test_io