Argument Clinic: compare signed and unsigned ints

[serhiy-storchaka]

BPO	20256
Nosy	@larryhastings, @serhiy-storchaka
Superseder	bpo-22120: Return converter code generated by Argument Clinic has a warning for unsigned types

^{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 2016-06-19.16:15:03.973>
created_at = <Date 2014-01-14.08:35:49.513>
labels = ['type-bug', 'expert-argument-clinic']
title = 'Argument Clinic: compare signed and unsigned ints'
updated_at = <Date 2016-06-19.16:15:03.971>
user = 'https://github.com/serhiy-storchaka'

bugs.python.org fields:

activity = <Date 2016-06-19.16:15:03.971>
actor = 'serhiy.storchaka'
assignee = 'none'
closed = True
closed_date = <Date 2016-06-19.16:15:03.973>
closer = 'serhiy.storchaka'
components = ['Demos and Tools', 'Argument Clinic']
creation = <Date 2014-01-14.08:35:49.513>
creator = 'serhiy.storchaka'
dependencies = []
files = []
hgrepos = []
issue_num = 20256
keywords = []
message_count = 4.0
messages = ['208083', '208244', '208251', '268855']
nosy_count = 2.0
nosy_names = ['larry', 'serhiy.storchaka']
pr_nums = []
priority = 'normal'
resolution = 'duplicate'
stage = 'resolved'
status = 'closed'
superseder = '22120'
type = 'behavior'
url = 'https://bugs.python.org/issue20256'
versions = ['Python 3.4']

[serhiy-storchaka]

For unsigned_int, unsigned_long and size_t return converters Argument Clinic generates a code which compares unsigned integer return_value with signed -1.

[larryhastings]

Good point. My brain is dead. What would be a better "magic cookie" value?

[serhiy-storchaka]

(unsigned int)-1 etc.

[serhiy-storchaka]

Was fixed in duplicate bpo-22120.