[issue38522] Py_USING_MEMORY_DEBUGGER is referenced in docs but not present in code

[Sümer Cip]

New submission from Sümer Cip <sumerc at gmail.com>:

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,

----------
components: Build
messages: 354922
nosy: Sümer.Cip
priority: normal
severity: normal
status: open
title: Py_USING_MEMORY_DEBUGGER is referenced in docs but not present in code
versions: Python 3.6, Python 3.7, Python 3.8, Python 3.9

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue38522>
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