Py_USING_MEMORY_DEBUGGER is referenced in docs but not present in code

[SmerCip]

BPO	38522
Nosy	@benjaminp, @miss-islington, @isidentical, @carlosdamazio, @carlosdamazio
PRs	bpo-38522: remove references to excluded Py_USING_MEMORY_DEBUGGER #30284 [3.10] closes bpo-38522 docs: remove references to Py_USING_MEMORY_DEBUGGER (GH-30284) #30295 [3.9] closes bpo-38522 docs: remove references to Py_USING_MEMORY_DEBUGGER (GH-30284) #30296

^{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 2021-12-29.23:01:25.937>
created_at = <Date 2019-10-18.22:01:11.915>
labels = ['easy', 'build', '3.9', '3.10', '3.11']
title = 'Py_USING_MEMORY_DEBUGGER is referenced in docs but not present in code'
updated_at = <Date 2021-12-29.23:01:25.937>
user = 'https://bugs.python.org/SmerCip'

bugs.python.org fields:

activity = <Date 2021-12-29.23:01:25.937>
actor = 'benjamin.peterson'
assignee = 'none'
closed = True
closed_date = <Date 2021-12-29.23:01:25.937>
closer = 'benjamin.peterson'
components = ['Build']
creation = <Date 2019-10-18.22:01:11.915>
creator = 'S\xc3\xbcmer.Cip'
dependencies = []
files = []
hgrepos = []
issue_num = 38522
keywords = ['patch', 'easy']
message_count = 4.0
messages = ['354922', '355010', '409327', '409333']
nosy_count = 6.0
nosy_names = ['benjamin.peterson', 'S\xc3\xbcmer.Cip', 'miss-islington', 'BTaskaya', 'dmzz', 'carlosdamazio']
pr_nums = ['30284', '30295', '30296']
priority = 'normal'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = None
url = 'https://bugs.python.org/issue38522'
versions = ['Python 3.9', 'Python 3.10', 'Python 3.11']

[SmerCip]

Hi all,

While trying to debug Python C extension via valgrind, I was reading the document Misc/README.valgrind and it seems there are some parts not being uptodate. There is comments comments like following:

Uncomment Py_USING_MEMORY_DEBUGGER in Objects/obmalloc.c, then rebuild Python. This define seems to be removed from the obmalloc.c file and also I am not sure if anything is using it at all. When I searched the code, only Python/dtoa.c have a reference to this define. Anyway, I have not specifically investigated the reason behind of the removal of the define but it seems it is removed somewhere between 3.3 and 3.4. I am assuming it might be related with tracemalloc maybe?

Cheers,

[isidentical]

It looks like benjamin peterson removed remaining references from obmalloc.c in 3924f93

[carlosdamazio]

Opened a PR for this issue. It'll remove the mentions to the Py_USING_MEMORY_DEBUGGER since it'd been removed 5 years ago.

[benjaminp]

New changeset 9f0e40f by Miss Islington (bot) in branch '3.10':
closes bpo-38522 docs: remove references to Py_USING_MEMORY_DEBUGGER (GH-30284) (GH-30295)
9f0e40f