Commit Graph

3425 Commits

Author SHA1 Message Date
Ralf W. Grosse-Kunstleve
b6444460ee Merge branch 'master' into sh_merge_master 2023-07-17 21:53:28 -07:00
Ralf W. Grosse-Kunstleve
8d08dc64ca
Copy v2.11.1 changelog section as released. (#4755) 2023-07-17 12:07:42 -07:00
Ethan Steinberg
99131a85b6
Provide PYBIND11_NO_ASSERT_GIL_HELD_INCREF_DECREF as an option (#4753)
* Remove GIL checks

* Update common.h

* Add flag

* style: pre-commit fixes

* Update pytypes.h

* style: pre-commit fixes

* Update common.h

* style: pre-commit fixes

* Update pytypes.h

* style: pre-commit fixes

* Update common.h

* style: pre-commit fixes

---------

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
2023-07-17 00:05:52 -07:00
Ralf W. Grosse-Kunstleve
ec1b57c50c
Disable PYBIND11_ASSERT_GIL_HELD_INCREF_DECREF generally for PyPy (not just PyPy Windows). (#4751) 2023-07-15 12:55:00 -07:00
bzaar
0620d71638
Update README.rst - Add missing comma in the list of acknowlegements (#4750) 2023-07-15 09:58:54 -07:00
Ralf W. Grosse-Kunstleve
9dba679766 Merge branch 'master' into sh_merge_master 2023-07-15 02:36:22 -07:00
Ralf W. Grosse-Kunstleve
e85696e80e
Post release version bump (#4747)
* Boilerplate version number update after v2.11.0 release.

* Small updates to release.rst
2023-07-14 14:53:58 -07:00
Ralf W. Grosse-Kunstleve
1a917f1852
docs: preparation for v2.11.0 release (#4744)
* Remove .dev1 from version number.

* Update Changelog (starting from `nox -s make_changelog` output)

* Miscellaneous minor fixes from proofreading in GitHub web view.

* docs: minor changelog updates

Signed-off-by: Henry Schreiner <henryschreineriii@gmail.com>

---------

Signed-off-by: Henry Schreiner <henryschreineriii@gmail.com>
Co-authored-by: Henry Schreiner <henryschreineriii@gmail.com>
2023-07-14 10:20:38 -05:00
Ralf W. Grosse-Kunstleve
fc2b9226b0 Tracking ci.yml changes from master. 2023-07-12 13:24:25 -07:00
Ralf W. Grosse-Kunstleve
9319f4ae75 Merge branch 'master' into sh_merge_master 2023-07-12 13:23:42 -07:00
Aaron Gokaslan
b33d06f615
bugfix: fixes a test suite bug in the __new__ example (#4698)
* bugfix: fixes a test suite bug in the __new__ example

* See https://github.com/pybind/pybind11/pull/4698#discussion_r1227107682

---------

Co-authored-by: Ralf W. Grosse-Kunstleve <rwgk@google.com>
2023-07-12 13:20:08 -07:00
Henry Schreiner
2e5f5c4cf8
fix: support CMake 3.27, drop 3.4 (#4719)
* fix: support CMake 3.27, drop 3.4

Signed-off-by: Henry Schreiner <henryschreineriii@gmail.com>

* Update upgrade.rst

* Update upgrade.rst

* Update upgrade.rst

---------

Signed-off-by: Henry Schreiner <henryschreineriii@gmail.com>
2023-07-12 13:10:24 -05:00
Luc de Jonckheere
6d22dba82f
Warning on comparing wrapper enums with is (#4732)
* Warning on comparing wrapper enums with is

* backticks for quoting and link to related issue

---------

Co-authored-by: Ralf W. Grosse-Kunstleve <rwgk@google.com>
2023-07-12 08:56:40 -07:00
dependabot[bot]
b2732c6e1a
chore(deps): bump pypa/gh-action-pypi-publish from 1.8.6 to 1.8.7 (#4718)
* chore(deps): bump pypa/gh-action-pypi-publish from 1.8.6 to 1.8.7

Bumps [pypa/gh-action-pypi-publish](https://github.com/pypa/gh-action-pypi-publish) from 1.8.6 to 1.8.7.
- [Release notes](https://github.com/pypa/gh-action-pypi-publish/releases)
- [Commits](https://github.com/pypa/gh-action-pypi-publish/compare/v1.8.6...v1.8.7)

---
updated-dependencies:
- dependency-name: pypa/gh-action-pypi-publish
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

* Apply suggestions from code review

---------

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Henry Schreiner <HenrySchreinerIII@gmail.com>
2023-07-12 08:55:18 -07:00
pre-commit-ci[bot]
47dc0c4bd1
chore(deps): update pre-commit hooks (#4727)
updates:
- [github.com/pre-commit/mirrors-clang-format: v16.0.4 → v16.0.6](https://github.com/pre-commit/mirrors-clang-format/compare/v16.0.4...v16.0.6)
- https://github.com/charliermarsh/ruff-pre-commithttps://github.com/astral-sh/ruff-pre-commit
- [github.com/astral-sh/ruff-pre-commit: v0.0.270 → v0.0.276](https://github.com/astral-sh/ruff-pre-commit/compare/v0.0.270...v0.0.276)
- [github.com/pre-commit/mirrors-mypy: v1.3.0 → v1.4.1](https://github.com/pre-commit/mirrors-mypy/compare/v1.3.0...v1.4.1)
- [github.com/asottile/blacken-docs: 1.13.0 → 1.14.0](https://github.com/asottile/blacken-docs/compare/1.13.0...1.14.0)
- [github.com/codespell-project/codespell: v2.2.4 → v2.2.5](https://github.com/codespell-project/codespell/compare/v2.2.4...v2.2.5)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Co-authored-by: Henry Schreiner <HenrySchreinerIII@gmail.com>
2023-07-11 10:31:43 -07:00
dependabot[bot]
d462dd91a5
chore(deps): bump scipy from 1.8.0 to 1.10.0 in /tests (#4731)
Bumps [scipy](https://github.com/scipy/scipy) from 1.8.0 to 1.10.0.
- [Release notes](https://github.com/scipy/scipy/releases)
- [Commits](https://github.com/scipy/scipy/compare/v1.8.0...v1.10.0)

---
updated-dependencies:
- dependency-name: scipy
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Ralf W. Grosse-Kunstleve <rwgk@google.com>
2023-07-10 10:43:20 -07:00
Ralf W. Grosse-Kunstleve
782b6281a2
Drop PyPy 3.7 from GitHub Actions (ci.yml) (#4728)
* Remove `pypy-3.7` from ci.yml

* Update .github/workflows/ci.yml

---------

Co-authored-by: Henry Schreiner <HenrySchreinerIII@gmail.com>
2023-07-09 09:40:47 -07:00
Henry Schreiner
5ccb9e412d
chore: ruff moved to astral-sh (#4726)
* chore: ruff moved to astral-sh

Committed via https://github.com/asottile/all-repos

* ci: bump CUDA version
2023-07-04 08:38:14 -04:00
Ralf W. Grosse-Kunstleve
ddb677b5ea Tracking ci.yml changes from master. 2023-06-27 15:11:55 -07:00
Ralf W. Grosse-Kunstleve
3a5d27e1f0 Merge branch 'master' into sh_merge_master 2023-06-27 15:11:06 -07:00
Ralf W. Grosse-Kunstleve
2fb3d7cbde
Trivial refactoring to make the capsule API more user friendly. (#4720)
* Trivial refactoring to make the capsule API more user friendly.

* Use new API in production code. Thanks @Lalaland for pointing this out.
2023-06-27 15:08:32 -07:00
Ralf W. Grosse-Kunstleve
e10da79b6e
Undo ci.yml gcc10 workaround after docker-library/gcc#95 was resolved. (#4717)
The gcc10 workaround was introduced with PR #4705.
2023-06-24 12:12:35 -07:00
Henry Schreiner
bc1bcf7c05
chore: 3.12 + cleanup (#4713)
Signed-off-by: Henry Schreiner <henryschreineriii@gmail.com>
2023-06-21 13:25:10 -04:00
Ralf W. Grosse-Kunstleve
4a52027a51 Tracking ci.yml changes from master. 2023-06-17 07:15:57 -07:00
Ralf W. Grosse-Kunstleve
eb510d5131 Merge branch 'master' into sh_merge_master 2023-06-17 07:13:12 -07:00
Ralf W. Grosse-Kunstleve
849322806c
Systematically add PIP_BREAK_SYSTEM_PACKAGES to all .yml files from which pip is called. (#4705)
* Systematically add PIP_BREAK_SYSTEM_PACKAGES to all .yml files from which pip is called.

* Try gcc:10-bullseye (because gcc:10 is broken: https://github.com/docker-library/gcc/issues/95)

* bug fix (matrix did not work as hoped)
2023-06-17 07:02:23 -07:00
Ralf W. Grosse-Kunstleve
86f60a0c07
pre-commit markdown-it-py<3 (for Python 3.7 compatibility) (#4704)
* markdown-it-py dropped Python 3.7 support, but we are type checking for Python 3.7 from a newer version of Python. Keep using markdown-it-py<3 as long as we support Python 3.7.

* Shuffle order of pre-commit checks for better agility.
2023-06-16 14:09:40 -07:00
Ralf W. Grosse-Kunstleve
99115ef50f Tracking ci.yml changes from master. 2023-06-10 10:17:29 -07:00
Ralf W. Grosse-Kunstleve
7f4ea30240 Merge branch 'master' into sh_merge_master 2023-06-10 10:16:11 -07:00
Ralf W. Grosse-Kunstleve
0e43fcc75e
Python 3.12b2 testing (#4695)
* Uncomment `Interface test` sections (test_embed)

* fix: setuptools has been removed from default installs in 3.12

---------

Co-authored-by: Henry Schreiner <HenrySchreinerIII@gmail.com>
2023-06-10 10:14:08 -07:00
Ralf W. Grosse-Kunstleve
0843514cb5 Tracking ci.yml changes from master. 2023-06-07 13:51:24 -07:00
Ralf W. Grosse-Kunstleve
6a567a30fd Merge branch 'master' into sh_merge_master 2023-06-07 13:50:35 -07:00
dependabot[bot]
c679a92095
chore(deps): bump deadsnakes/action from 3.0.0 to 3.0.1 (#4687)
Bumps [deadsnakes/action](https://github.com/deadsnakes/action) from 3.0.0 to 3.0.1.
- [Release notes](https://github.com/deadsnakes/action/releases)
- [Commits](https://github.com/deadsnakes/action/compare/v3.0.0...v3.0.1)

---
updated-dependencies:
- dependency-name: deadsnakes/action
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Ralf W. Grosse-Kunstleve <rwgk@google.com>
2023-06-07 13:49:14 -07:00
pre-commit-ci[bot]
3617f3554a
chore(deps): update pre-commit hooks (#4689)
* chore(deps): update pre-commit hooks

updates:
- [github.com/charliermarsh/ruff-pre-commit: v0.0.263 → v0.0.270](https://github.com/charliermarsh/ruff-pre-commit/compare/v0.0.263...v0.0.270)
- [github.com/pre-commit/mirrors-mypy: v1.2.0 → v1.3.0](https://github.com/pre-commit/mirrors-mypy/compare/v1.2.0...v1.3.0)
- [github.com/shellcheck-py/shellcheck-py: v0.9.0.2 → v0.9.0.5](https://github.com/shellcheck-py/shellcheck-py/compare/v0.9.0.2...v0.9.0.5)
- [github.com/pre-commit/mirrors-clang-format: v16.0.2 → v16.0.4](https://github.com/pre-commit/mirrors-clang-format/compare/v16.0.2...v16.0.4)

* Resolve new ruff error:

```
tests/test_pytypes.py:478:20: PLW0130 Duplicate value `3` in set
```

The reduction from `{3, 3}` to `{3}` never happened in pybind11 code, therefore this change is essentially a no-op for the purpose of unit-testing pybind11.

---------

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Co-authored-by: Ralf W. Grosse-Kunstleve <rwgk@google.com>
2023-06-07 12:57:38 -07:00
Ralf W. Grosse-Kunstleve
29487dee8f
Disable 🐍 3 • CentOS7 / PGI 22.9 • x64 (#4691) 2023-06-07 12:00:37 -07:00
T.Yamada
d0232b119f
Use annotated for array (#4679)
* use Annotated for std::array docstring

* add tests

* fix test

* style: pre-commit fixes

* fix valarray annotation

* style: pre-commit fixes

* refix test

* add FixedSize

* style: pre-commit fixes

* Update test_stl.py

* style: pre-commit fixes

---------

Co-authored-by: Taiju Yamada <taiju.yamada@mujin.co.jp>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
2023-05-24 21:39:36 -07:00
Ralf W. Grosse-Kunstleve
78658b8024 Merge branch 'master' into sh_merge_master 2023-05-23 10:51:08 -07:00
Ralf W. Grosse-Kunstleve
8e1f9d5c40
Add format_descriptor<> & npy_format_descriptor<> PyObject * specializations. (#4674)
* Add `npy_format_descriptor<PyObject *>` to enable `py::array_t<PyObject *>` to/from-python conversions.

* resolve clang-tidy warning

* Use existing constructor instead of adding a static method. Thanks @Skylion007 for pointing out.

* Add `format_descriptor<PyObject *>`

Trivial addition, but still in search for a meaningful test.

* Add test_format_descriptor_format

* Ensure the Eigen `type_caster`s do not segfault when loading arrays with dtype=object

* Use `static_assert()` `!std::is_pointer<>` to replace runtime guards.

* Add comments to explain how to check for ref-count bugs. (NO code changes.)

* Make the "Pointer types ... are not supported" message Eigen-specific, as suggested by @Lalaland. Move to new pybind11/eigen/common.h header.

* Change "format_descriptor_format" implementation as suggested by @Lalaland. Additional tests meant to ensure consistency between py::format_descriptor<>, np.array, np.format_parser turn out to be useful only to highlight long-standing inconsistencies.

* resolve clang-tidy warning

* Account for np.float128, np.complex256 not being available on Windows, in a future-proof way.

* Fully address i|q|l ambiguity (hopefully).

* Remove the new `np.format_parser()`-based test, it's much more distracting than useful.

* Use bi.itemsize to disambiguate "l" or "L"

* Use `py::detail::compare_buffer_info<T>::compare()` to validate the `format_descriptor<T>::format()` strings.

* Add `buffer_info::compare<T>` to make `detail::compare_buffer_info<T>::compare` more visible & accessible.

* silence clang-tidy warning

* pytest-compatible access to np.float128, np.complex256

* Revert "pytest-compatible access to np.float128, np.complex256"

This reverts commit e9a289c50f.

* Use `sizeof(long double) == sizeof(double)` instead of `std::is_same<>`

* Report skipped `long double` tests.

* Change the name of the new `buffer_info` member function to `item_type_is_equivalent_to`. Add comment defining "equivalent" by example.

* Change `item_type_is_equivalent_to<>()` from `static` function to member function, as suggested by @Lalaland
2023-05-23 10:49:32 -07:00
Joyce
6e6bcca5b2
Create s Security Policy (#4671)
* Create SECURITY.md

* Update test_files.py to include SECURITY.md file

* Update MANIFEST.in to include SECURITY.md file
2023-05-23 10:05:25 -07:00
Ralf W. Grosse-Kunstleve
ce9bbc0a21
Python 3.11+: Add __notes__ to error_already_set::what() output. (#4678)
* First version adding `__notes__` to `error_already_set::what()` output.

* Fix trivial oversight (missing adjustment in existing test).

* Minor enhancements of new code.

* Re-enable `cmake --target cpptest -j 2`

* Revert "Re-enable `cmake --target cpptest -j 2`"

This reverts commit 60816285e9.

* Add general comment explaining why the `error_fetch_and_normalize` code is so unusual.
2023-05-23 10:03:33 -07:00
Ralf W. Grosse-Kunstleve
19816f0db7
chore: update changelog, with target date for v2.11.0 release (#4677)
* Remove .dev1 from version number.

* [skip ci] Update changelog.rst

* [ci skip] Fix pre-commit: rst ``code`` is two backticks

* Apply fix suggested by @henryiii

* [ci skip] Set target date for the release to June 2, 2023

* [ci skip] Apply more fixes suggested by @henryiii (I missed those before).

* [ci skip] Revert "Remove .dev1 from version number."

This reverts commit afc80134cb.
2023-05-22 13:44:03 -07:00
Ralf W. Grosse-Kunstleve
0c0abc9552 Tracking ci.yml changes from master. 2023-05-16 07:56:40 -07:00
Ralf W. Grosse-Kunstleve
6acda67f62 Merge branch 'master' into sh_merge_master 2023-05-16 07:55:38 -07:00
Joyce
d72ffb448c
ci: set minimal permissions to github workflows (#4665)
* set ci.yml minimal permissions

Signed-off-by: Joyce <joycebrum@google.com>

* set configure.yml minimal permissions

Signed-off-by: Joyce <joycebrum@google.com>

* set format.yml minimal permissions

Signed-off-by: Joyce <joycebrum@google.com>

* set pip.yml minimal permissions

Signed-off-by: Joyce <joycebrum@google.com>

* set upstream.yml minimal permissions

Signed-off-by: Joyce <joycebrum@google.com>

* set labeler.yml minimal permissions

Signed-off-by: Joyce <joycebrum@google.com>

* Update ci.yml to read all

Signed-off-by: Joyce <joycebrum@google.com>

* test labeler.yml

Signed-off-by: Joyce <joycebrum@google.com>

* restore the if at labeler.yml

Signed-off-by: Joyce <joycebrum@google.com>

---------

Signed-off-by: Joyce <joycebrum@google.com>
2023-05-15 13:02:25 -04:00
Tim Stumbaugh
cca4c51ca4
Update errors in string "Explicit conversions" docs (#4658)
`PyUnicode_DecodeLatin1` requires you to pass in the `error`
parameter. The code as it is in the docs didn't compile.

There is a reference leak in the example
code. `PyUnicode_DecodeLatin1` returns a new reference. Calling
`py::str(PyObject*)` calls `PyObject_Str`, which also returns a new
reference. That reference is managed by the `py::str`
constructor (which correctly steals the reference, using the
`stolen_t` constructor), but the original reference returned by
`PyUnicode_DecodeLatin1` is never decref'd: it never makes it into an
`object`, and it's never manually decremented.

This fixes both of those issues. The code compiles, and I viewed the
sphinx docs locally.
2023-05-09 07:04:20 -07:00
Ralf W. Grosse-Kunstleve
eb456b1599 Merge branch 'master' into sh_merge_master 2023-05-08 10:27:38 -07:00
Ralf W. Grosse-Kunstleve
e9b961d9b9
Elide to-python conversion of setter return values (#4621)
* Reproducer for property setter with return type that is not wrapped.

* Use `py::class_<OptionsBase>()` to work around the return value conversion issue.

* WIP drop_return_value

* Remove struct drop_return_value

* Introduce `return_value_policy::return_none` for use by setters.

* Add `is_setter` to attr.h and use from `.def_property()`

* Merge the new test into test_methods_and_attributes

* Remove return_none return_value_policy again.

* Fix oversight (NOLINTNEXTLINE placement).

* Simplification (for the better) found while searching for a way to resolve GCC build failures.

Example of failure resolved by this change:

g++ (Ubuntu 9.4.0-1ubuntu1~20.04.1) 9.4.0

```
cd /build/tests && /usr/bin/c++ -DPYBIND11_TEST_EIGEN -Dpybind11_tests_EXPORTS -I/mounted_pybind11/include -isystem /usr/include/python3.8 -isystem /build/_deps/eigen-src -g -std=c++17 -fPIC -fvisibility=hidden -Wall -Wextra -Wconversion -Wcast-qual -Wdeprecated -Wundef -Wnon-virtual-dtor -MD -MT tests/CMakeFiles/pybind11_tests.dir/test_buffers.cpp.o -MF CMakeFiles/pybind11_tests.dir/test_buffers.cpp.o.d -o CMakeFiles/pybind11_tests.dir/test_buffers.cpp.o -c /mounted_pybind11/tests/test_buffers.cpp
In file included from /mounted_pybind11/include/pybind11/stl.h:12,
                 from /mounted_pybind11/tests/test_buffers.cpp:10:
/mounted_pybind11/include/pybind11/pybind11.h: In instantiation of ‘pybind11::class_<type_, options>& pybind11::class_<type_, options>::def_property(const char*, const Getter&, const Setter&, const Extra& ...) [with Getter = pybind11::cpp_function; Setter = std::nullptr_t; Extra = {pybind11::return_value_policy}; type_ = pybind11::buffer_info; options = {}]’:
/mounted_pybind11/include/pybind11/pybind11.h:1716:58:   required from ‘pybind11::class_<type_, options>& pybind11::class_<type_, options>::def_property_readonly(const char*, const pybind11::cpp_function&, const Extra& ...) [with Extra = {pybind11::return_value_policy}; type_ = pybind11::buffer_info; options = {}]’
/mounted_pybind11/include/pybind11/pybind11.h:1684:9:   required from ‘pybind11::class_<type_, options>& pybind11::class_<type_, options>::def_readonly(const char*, const D C::*, const Extra& ...) [with C = pybind11::buffer_info; D = long int; Extra = {}; type_ = pybind11::buffer_info; options = {}]’
/mounted_pybind11/tests/test_buffers.cpp:209:61:   required from here
/mounted_pybind11/include/pybind11/pybind11.h:1740:25: error: call of overloaded ‘cpp_function(std::nullptr_t&, pybind11::is_setter)’ is ambiguous
 1740 |             name, fget, cpp_function(method_adaptor<type>(fset), is_setter()), extra...);
      |                         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/mounted_pybind11/include/pybind11/pybind11.h:101:5: note: candidate: ‘pybind11::cpp_function::cpp_function(Func&&, const Extra& ...) [with Func = std::nullptr_t&; Extra = {pybind11::is_setter}; <template-parameter-1-3> = void]’
  101 |     cpp_function(Func &&f, const Extra &...extra) {
      |     ^~~~~~~~~~~~
In file included from /mounted_pybind11/include/pybind11/stl.h:12,
                 from /mounted_pybind11/tests/test_buffers.cpp:10:
/mounted_pybind11/include/pybind11/pybind11.h:87:5: note: candidate: ‘pybind11::cpp_function::cpp_function(std::nullptr_t, const Extra& ...) [with Extra = {pybind11::is_setter}; std::nullptr_t = std::nullptr_t]’
   87 |     cpp_function(std::nullptr_t, const Extra &...) {}
      |     ^~~~~~~~~~~~
```

* Bug fix: obvious in hindsight. I thought the original version was incrementing the reference count for None, but no.

Discovered via many failing tests in the wild (10s of thousands).

It is very tricky to construct a meaningful unit test for this bug specifically. It's unlikely to come back, because 10s of thousands of tests will fail again.
2023-05-08 10:13:54 -07:00
Ralf W. Grosse-Kunstleve
bd69f7aaf2 Add handling of return_value_policy::_clif_automatic in type_caster_pyobject_ptr.h (backported from https://github.com/google/pywrapcc/pull/30021) 2023-05-07 10:41:21 -07:00
Ralf W. Grosse-Kunstleve
ba3d14d4c6 Merge branch 'master' into sh_merge_master 2023-05-07 10:22:21 -07:00
Ralf W. Grosse-Kunstleve
90312a6ee8
Add type_caster<PyObject> (#4601)
* Add `type_caster<PyObject>` (tests are still incomplete).

* Fix oversight (`const PyObject *`).

* Ensure `type_caster<PyObject>` only works for `PyObject *`

* Move `is_same_ignoring_cvref` into `detail` namespace.

* Add test_cast_nullptr

* Change is_same_ignoring_cvref from variable template to using.

```
test_type_caster_pyobject_ptr.cpp:8:23: error: variable templates only available with ‘-std=c++14’ or ‘-std=gnu++14’ [-Werror]
    8 | static constexpr bool is_same_ignoring_cvref = std::is_same<detail::remove_cvref_t<T>, U>::value;
      |                       ^~~~~~~~~~~~~~~~~~~~~~
```

* Remove `return_value_policy::reference_internal` `keep_alive` feature (because of doubts about it actually being useful).

* Add missing test, fix bug (missing `throw error_already_set();`), various cosmetic changes.

* Move `type_caster<PyObject>` from test to new include (pybind11/type_caster_pyobject_ptr.h)

* Add new header file to CMakeLists.txt and tests/extra_python_package/test_files.py

* Backport changes from https://github.com/google/pywrapcc/pull/30021 to https://github.com/pybind/pybind11/pull/4601

* Fix oversight in test (to resolve a valgrind leak detection error) and add a related comment in cast.h.

No production code changes.

Make tests more sensitive by using `ValueHolder` instead of empty tuples and dicts.

Manual leak checks with `while True:` & top command repeated for all tests.

* Add tests for interop with stl.h `list_caster`

(No production code changes.)

* Bug fix in test. Minor comment enhancements.

* Change `type_caster<PyObject>::name` to `object`, as suggested by @Skylion007

* Expand comment for the new `T cast(const handle &handle)` [`T` = `PyObject *`]

* Add `T cast(object &&obj)` overload as suggested by @Skylion007

The original suggestion leads to `error: call to 'cast' is ambiguous` (full error message below), therefore SFINAE guarding is needed.

```
clang++ -o pybind11/tests/test_type_caster_pyobject_ptr.os -c -std=c++17 -fPIC -fvisibility=hidden -O0 -g -Wall -Wextra -Wconversion -Wcast-qual -Wdeprecated -Wundef -Wnon-virtual-dtor -Wunused-result -Werror -isystem /usr/include/python3.10 -isystem /usr/include/eigen3 -DPYBIND11_STRICT_ASSERTS_CLASS_HOLDER_VS_TYPE_CASTER_MIX -DPYBIND11_ENABLE_TYPE_CASTER_ODR_GUARD_IF_AVAILABLE -DPYBIND11_TEST_BOOST -Ipybind11/include -I/usr/local/google/home/rwgk/forked/pybind11/include -I/usr/local/google/home/rwgk/clone/pybind11/include /usr/local/google/home/rwgk/forked/pybind11/tests/test_type_caster_pyobject_ptr.cpp
In file included from /usr/local/google/home/rwgk/forked/pybind11/tests/test_type_caster_pyobject_ptr.cpp:1:
In file included from /usr/local/google/home/rwgk/forked/pybind11/include/pybind11/functional.h:12:
In file included from /usr/local/google/home/rwgk/forked/pybind11/include/pybind11/pybind11.h:13:
In file included from /usr/local/google/home/rwgk/forked/pybind11/include/pybind11/detail/class.h:12:
In file included from /usr/local/google/home/rwgk/forked/pybind11/include/pybind11/attr.h:14:
/usr/local/google/home/rwgk/forked/pybind11/include/pybind11/cast.h:1165:12: error: call to 'cast' is ambiguous
    return pybind11::cast<T>(std::move(*this));
           ^~~~~~~~~~~~~~~~~
/usr/local/google/home/rwgk/forked/pybind11/include/pybind11/functional.h:109:70: note: in instantiation of function template specialization 'pybind11::object::cast<_object *>' requested here
                return hfunc.f(std::forward<Args>(args)...).template cast<Return>();
                                                                     ^
/usr/local/google/home/rwgk/forked/pybind11/include/pybind11/functional.h:103:16: note: in instantiation of member function 'pybind11::detail::type_caster<std::function<_object *(int)>>::load(pybind11::handle, bool)::func_wrapper::operator()' requested here
        struct func_wrapper {
               ^
/usr/local/google/home/rwgk/forked/pybind11/include/pybind11/cast.h:1456:47: note: in instantiation of member function 'pybind11::detail::type_caster<std::function<_object *(int)>>::load' requested here
        if ((... || !std::get<Is>(argcasters).load(call.args[Is], call.args_convert[Is]))) {
                                              ^
/usr/local/google/home/rwgk/forked/pybind11/include/pybind11/cast.h:1434:50: note: in instantiation of function template specialization 'pybind11::detail::argument_loader<const std::function<_object *(int)> &, int>::load_impl_sequence<0UL, 1UL>' requested here
    bool load_args(function_call &call) { return load_impl_sequence(call, indices{}); }
                                                 ^
/usr/local/google/home/rwgk/forked/pybind11/include/pybind11/pybind11.h:227:33: note: in instantiation of member function 'pybind11::detail::argument_loader<const std::function<_object *(int)> &, int>::load_args' requested here
            if (!args_converter.load_args(call)) {
                                ^
/usr/local/google/home/rwgk/forked/pybind11/include/pybind11/pybind11.h:101:9: note: in instantiation of function template specialization 'pybind11::cpp_function::initialize<(lambda at /usr/local/google/home/rwgk/forked/pybind11/tests/test_type_caster_pyobject_ptr.cpp:50:9), _object *, const std::function<_object *(int)> &, int, pybind11::name, pybind11::scope, pybind11::sibling, pybind11::return_value_policy>' requested here
        initialize(
        ^
/usr/local/google/home/rwgk/forked/pybind11/include/pybind11/pybind11.h:1163:22: note: in instantiation of function template specialization 'pybind11::cpp_function::cpp_function<(lambda at /usr/local/google/home/rwgk/forked/pybind11/tests/test_type_caster_pyobject_ptr.cpp:50:9), pybind11::name, pybind11::scope, pybind11::sibling, pybind11::return_value_policy, void>' requested here
        cpp_function func(std::forward<Func>(f),
                     ^
/usr/local/google/home/rwgk/forked/pybind11/tests/test_type_caster_pyobject_ptr.cpp:48:7: note: in instantiation of function template specialization 'pybind11::module_::def<(lambda at /usr/local/google/home/rwgk/forked/pybind11/tests/test_type_caster_pyobject_ptr.cpp:50:9), pybind11::return_value_policy>' requested here
    m.def(
      ^
/usr/local/google/home/rwgk/forked/pybind11/include/pybind11/cast.h:1077:3: note: candidate function [with T = _object *, $1 = 0]
T cast(object &&obj) {
  ^
/usr/local/google/home/rwgk/forked/pybind11/include/pybind11/cast.h:1149:1: note: candidate function [with T = _object *]
cast(object &&object) {
^
1 error generated.
```
2023-05-07 10:15:53 -07:00