Description

BHUVANSH855

opened on Oct 3, 2026

Issue body actions

Documentation

As of 3.14, Py_EnterRecursiveCall and Py_LeaveRecursiveCall no longer use
a call counter (c_recursion_remaining); they compare the current C stack
pointer against tstate->c_stack_soft_limit.

The documentation still describes the check as "if the stack limit is reached"
without clarifying that this is actual C stack consumption, unaffected by
sys.setrecursionlimit(). This was noted by @ZeroIntensity in
#156205 (review)

Linked PRs

• gh-158643: Doc: document that Py_EnterRecursiveCall uses C stack, not a counter #158644
• [3.15] gh-158643: Document that Py_EnterRecursiveCall uses the C stack, not a counter (GH-158644) #158653
• [3.14] gh-158643: Document that Py_EnterRecursiveCall uses the C stack, not a counter (GH-158644) #158654

Activity

1. BHUVANSH855

   added

   docsDocumentation in the Doc dirDocumentation in the Doc dir

   on Oct 3, 2026
2. github-project-automation

   added this to docs issueson Oct 3, 2026
3. aisk

   added

   needs backport to 3.14bugs and security fixesbugs and security fixes

   needs backport to 3.15bugs and security fixesbugs and security fixes

   and removed

   needs backport to 3.14bugs and security fixesbugs and security fixes

   needs backport to 3.15bugs and security fixesbugs and security fixes

   on Oct 3, 2026
4. StanFromIreland

   added

   topic-C-API

   on Oct 3, 2026
5. ZeroIntensity commented on Oct 3, 2026

   

   ZeroIntensity

   on Oct 3, 2026

   Member

   More actions

   (For future reference, we usually don't need a new issue for documentation changes.)

   Reacted by Bhuvansh
6. ZeroIntensity

   added a commit that references this issue on Oct 3, 2026

   gh-158643: Document that `Py_EnterRecursiveCall` uses the C stack, no…

   d6d1ebc
7. ZeroIntensity

   closed this as completedin #158644on Oct 3, 2026
8. ZeroIntensity

   added a commit that references this issue on Oct 3, 2026

   [3.14] gh-158643: Document that `Py_EnterRecursiveCall` uses the C st…

   8d745f7
9. hugovk

   added a commit that references this issue on Oct 3, 2026

   [3.15] gh-158643: Document that `Py_EnterRecursiveCall` uses the C st…

   748262f

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