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@rwgk rwgk commented Apr 8, 2023

This approach supports an important PyCLIF use case: Base not specified in classh<Derived> statement, but passing Derived as Base works anyway.

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Suggested changelog entry:

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rwgk commented Apr 9, 2023

@wangxf123456 FYI

This PR all by itself (without additional changes in PyCLIF-pybind11) fixes //third_party/clif/testing/python:final_test

For completeness, the error (before this PR is applied) was:

[ RUN      ] FinalTest.testCanUseSwigFinalAsFinal
[  FAILED  ] FinalTest.testCanUseSwigFinalAsFinal
======================================================================
ERROR: testCanUseSwigFinalAsFinal (__main__.FinalTest)
FinalTest.testCanUseSwigFinalAsFinal
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/build/work/.../google3/runfiles/google3/third_party/clif/testing/python/final_test.py", line 12, in testCanUseSwigFinalAsFinal
    final.TakesFinal(swig_object)
TypeError: TakesFinal(): incompatible function arguments. The following argument types are supported:
    1. (final: google3.third_party.clif.testing.python.final.Final) -> None

Invoked with: <google3.third_party.clif.testing.python.final.SwigFinal object at 0x7fbe0b5d03f0>

@rwgk rwgk marked this pull request as ready for review April 10, 2023 17:43
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rwgk commented Apr 10, 2023

Google-internal global testing ID: OCL:522836781:BASE:523134970:1681144155208:16ce654b

@rwgk rwgk merged commit d930de0 into pybind:smart_holder Apr 10, 2023
@rwgk rwgk deleted the as_base_ptrs_sh branch April 10, 2023 18:13
@github-actions github-actions bot added the needs changelog Possibly needs a changelog entry label Apr 10, 2023
@rwgk rwgk removed the needs changelog Possibly needs a changelog entry label Apr 10, 2023
wangxf123456 pushed a commit to google/clif that referenced this pull request Apr 12, 2023
This change was enabled by pybind/pybind11#4612

TGP-tested via TGP-head 2023-04-06 (cl/522266833) re-run with this change:

* https://fusion2.corp.google.com/presubmit/tap/522266833/OCL:522266833:BASE:522968984:1681064677276:5304c616;groups=Passing/targets

* 116 Passing

Example generated code:

```
      UnspecDerived_class.def(
          "as_clif_testing_unspecified_inheritance_UnspecBase",
          [](::clif_testing::unspecified_inheritance::UnspecDerived* self) {
              return py::capsule(static_cast<void *>(self));
          }
      );
```

PiperOrigin-RevId: 523233130
wangxf123456 pushed a commit to google/clif that referenced this pull request Apr 14, 2023
This change was enabled by pybind/pybind11#4612

TGP-tested via TGP-head 2023-04-06 (cl/522266833) re-run with this change:

* https://fusion2.corp.google.com/presubmit/tap/522266833/OCL:522266833:BASE:522968984:1681064677276:5304c616;groups=Passing/targets

* 116 Passing

Example generated code:

```
      UnspecDerived_class.def(
          "as_clif_testing_unspecified_inheritance_UnspecBase",
          [](::clif_testing::unspecified_inheritance::UnspecDerived* self) {
              return py::capsule(static_cast<void *>(self));
          }
      );
```

PiperOrigin-RevId: 523233130
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2 participants