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gh-85283: If Py_LIMITED_API is defined, undefine Py_BUILD_CORE #110725

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Merged
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Oct 11, 2023
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gh-85283: If Py_LIMITED_API is defined, undefine Py_BUILD_CORE #110725

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gh-85283: If Py_LIMITED_API is defined, undefine Py_BUILD_CORE
vstinner Oct 11, 2023
8ae3173
Fix the doc
vstinner Oct 11, 2023
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5 changes: 5 additions & 0 deletions Doc/whatsnew/3.13.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -1075,6 +1075,11 @@ Porting to Python 3.13
:c:func:`!Py_TOLOWER`.
(Contributed by Victor Stinner in :gh:`108765`.)

* If the :c:macro:`Py_LIMITED_API` macro is defined, :c:macro:`!Py_BUILD_CORE`,
:c:macro:`!Py_BUILD_CORE_BUILTIN` and :c:macro:`!Py_BUILD_CORE_MODULE` macros
are now undefined by ``<Python.h>``.
(Contributed by Victor Stinner in :gh:`85283`.)

Deprecated
----------

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13 changes: 9 additions & 4 deletions Include/pyport.h
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Expand Up @@ -48,10 +48,6 @@
# define Py_BUILD_CORE
#endif

#if defined(Py_LIMITED_API) && defined(Py_BUILD_CORE)
# error "Py_LIMITED_API is not compatible with Py_BUILD_CORE"
#endif


/**************************************************************************
Symbols and macros to supply platform-independent interfaces to basic
Expand Down Expand Up @@ -361,6 +357,15 @@ extern "C" {

#include "exports.h"

#ifdef Py_LIMITED_API
// The internal C API must not be used with the limited C API: make sure
// that Py_BUILD_CORE macro is not defined in this case. These 3 macros are
// used by exports.h, so only undefine them afterwards.
# undef Py_BUILD_CORE
# undef Py_BUILD_CORE_BUILTIN
# undef Py_BUILD_CORE_MODULE
#endif

/* limits.h constants that may be missing */

#ifndef INT_MAX
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3 changes: 3 additions & 0 deletions Misc/NEWS.d/next/C API/2023-10-11-17-29-52.gh-issue-85283.OsqIBF.rst
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@@ -0,0 +1,3 @@
If the :c:macro:`Py_LIMITED_API` macro is defined, :c:macro:`!Py_BUILD_CORE`,
:c:macro:`!Py_BUILD_CORE_BUILTIN` and :c:macro:`!Py_BUILD_CORE_MODULE` macros
are now undefined by ``<Python.h>``. Patch by Victor Stinner.