[PATCH v1 0/4] gdb/python: more fixes again for Python limited C API support

[Matthieu Longo <matthieu.longo@arm.com>]

This patch series fixes more issues encountered while enabling the Python limited C API in GDB. This is probably the last relatively-small patch series before the Python C extension types migration to the limited API.

Patch 1 reuses a previous patch publised by Tom Tromey [1], with additional modifications that are required for its usage in the Python C extension types migration.
Patch 2 adapts the signature of eval_python_command() to return both the exit code and the result.
Patch 3 migrates Python initialization to use the new config API (PEP 741) introduced by Python 3.14. Old code is preserved for older versions of Python.
Patch 4 proposes a workaround for the missing symbols not yet part of the limited API. Thanks to it, I was able to finish the compilation of GDB using the limited C API and run all the Python tests successfully.

All changes were tested by building GDB against the unlimited API of Python 3.10, 3.11, 3.12, 3.13 and 3.14, and the limited API of Python 3.14 (no build regression), and no regressions were observed in the testsuite.

Regards,
Matthieu

[1]: https://inbox.sourceware.org/gdb-patches/20260222200759.1587070-2-tom@tromey.com/


Matthieu Longo (3):
  gdb/python: eval_python_command returns both exit code and result
  gdb/python: migrate Python initialization to use the new config API (PEP 741)
  gdb/python: work around missing symbols not yet part of Python limited API

Tom Tromey (1):
  gdb/python: add gdbpy_borrowed_ref

 gdb/python/py-gdb-readline.c            |   3 +-
 gdb/python/py-ref.h                     | 114 +++++++++++++++
 gdb/python/python-internal.h            |   7 +-
 gdb/python/python-limited-api-missing.h |  62 ++++++++
 gdb/python/python.c                     | 182 ++++++++++++++++++++----
 gdb/varobj.c                            |  12 +-
 6 files changed, 341 insertions(+), 39 deletions(-)
 create mode 100644 gdb/python/python-limited-api-missing.h

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2.53.0