From b1a4d4c511c4b3da70b40891cb6e18e0ba6cce9a Mon Sep 17 00:00:00 2001 From: "C.A.M. Gerlach" Date: Sat, 15 Oct 2022 22:39:19 -0500 Subject: [PATCH 1/2] Add item to C API porting section describing PEP 670 changes --- Doc/whatsnew/3.11.rst | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/Doc/whatsnew/3.11.rst b/Doc/whatsnew/3.11.rst index 56a35f4e4802ba..1f82d9a0bf0edd 100644 --- a/Doc/whatsnew/3.11.rst +++ b/Doc/whatsnew/3.11.rst @@ -1884,6 +1884,17 @@ New Features Porting to Python 3.11 ---------------------- +* Many macros have been converted to functions in the Python C API, + making them usable from other programming languages and avoiding + `macro pitfalls `_ + The change should be mostly transparent to users, + as the replacement functions will cast their arguments to the expected types + to avoid compiler warnings due to static type checks. + However, when the limited C API is set to >=3.11, these casts are not done, + and callers will need to cast arguments to their expected values. + See :pep:`670` for more details. + (Contributed by Victor Stinner in :gh:`89653`.) + * :c:func:`PyErr_SetExcInfo()` no longer uses the ``type`` and ``traceback`` arguments, the interpreter now derives those values from the exception instance (the ``value`` argument). The function still steals references From 8fad67cb543aa6e4d68ff579bc01d04b41f259a3 Mon Sep 17 00:00:00 2001 From: "C.A.M. Gerlach" Date: Mon, 17 Oct 2022 12:50:29 -0500 Subject: [PATCH 2/2] Apply requested changes from Victor and Kumar to PEP 670 section Co-authored-by: Victor Stinner --- Doc/whatsnew/3.11.rst | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/Doc/whatsnew/3.11.rst b/Doc/whatsnew/3.11.rst index 1f82d9a0bf0edd..55c2645e6b0358 100644 --- a/Doc/whatsnew/3.11.rst +++ b/Doc/whatsnew/3.11.rst @@ -1884,16 +1884,16 @@ New Features Porting to Python 3.11 ---------------------- -* Many macros have been converted to functions in the Python C API, - making them usable from other programming languages and avoiding - `macro pitfalls `_ +* Some macros have been converted to static inline functions to avoid + `macro pitfalls `_. The change should be mostly transparent to users, as the replacement functions will cast their arguments to the expected types to avoid compiler warnings due to static type checks. - However, when the limited C API is set to >=3.11, these casts are not done, - and callers will need to cast arguments to their expected values. + However, when the limited C API is set to >=3.11, + these casts are not done, + and callers will need to cast arguments to their expected types. See :pep:`670` for more details. - (Contributed by Victor Stinner in :gh:`89653`.) + (Contributed by Victor Stinner and Erlend E. Aasland in :gh:`89653`.) * :c:func:`PyErr_SetExcInfo()` no longer uses the ``type`` and ``traceback`` arguments, the interpreter now derives those values from the exception pFad - Phonifier reborn

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