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fix: bind noexcept and ref-qualified methods from unregistered base classes (#5992)

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* Strip noexcept from cpp17 function type bindings

* Fix a bug and increase test coverage

* Does this fix it?

* Silence clang-tidy issue

* Simplify method adapter with macro and add missing rvalue adaptors + tests

* Supress clang-tidy errors

* Improve test coverage

* Add additional static assert

* Try to resolve MSVC C4003 warning

* Simplify method adaptor into 2 template instatiations with enable_if_t

* Fix ambiguous STL template

* Close remaining qualifier consistency gaps for member pointer bindings.

A production-code review after #2234 showed that ref-qualified member pointers were still inconsistently handled across def_buffer, vectorize, and overload_cast, so this adds the missing overloads with focused tests for each newly-supported signature.

Co-authored-by: Cursor <cursoragent@cursor.com>

* Clarify why def_buffer/vectorize omit rvalue-qualified overloads.

These comments were added while reviewing the qualifier coverage follow-up, to document that buffer/vectorized calls operate on existing Python-owned instances and should not move-from self.

Co-authored-by: Cursor <cursoragent@cursor.com>

* Add compile-only overload_cast guard for ref-qualified methods.

This was added as a maintenance follow-up to the qualifier-consistency work, so future changes that introduce overload_cast ambiguity or wrong ref/noexcept resolution fail at compile time.

Co-authored-by: Cursor <cursoragent@cursor.com>

* Refactor overload_cast_impl qualifier overloads with a macro.

As part of the qualifier-consistency maintenance follow-up, this reduces duplication in overload_cast_impl while preserving the same ref/noexcept coverage and keeping pedantic-clean macro expansion.

Co-authored-by: Cursor <cursoragent@cursor.com>

* Expose __cpp_noexcept_function_type to Python tests and use explicit skip guards.

This replaces hasattr-based optional assertions with skipif-gated noexcept-only tests so skipped coverage is visible in pytest output while keeping non-noexcept checks always active.

Co-authored-by: Cursor <cursoragent@cursor.com>

* Add static_assert in method_adaptor to guard that T is a member function pointer.

Suggested by @Skylion007 in PR #5992 review comment [T007].

Made-with: Cursor

* automatic clang-format change (because of #6002)

---------

Co-authored-by: Ralf W. Grosse-Kunstleve <rgrossekunst@nvidia.com>
Co-authored-by: Cursor <cursoragent@cursor.com>
This commit is contained in:
Aaron Gokaslan
2026-03-26 19:21:32 -04:00
committed by Ralf W. Grosse-Kunstleve
parent c0cfa96555
commit 3cb5a763c1
10 changed files with 1015 additions and 21 deletions
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6
tests/pybind11_tests.cpp
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@@ -111,6 +111,12 @@ PYBIND11_MODULE(pybind11_tests, m, py::mod_gil_not_used()) {
m.attr("detailed_error_messages_enabled") = false;
#endif
#if defined(__cpp_noexcept_function_type)
m.attr("defined___cpp_noexcept_function_type") = true;
#else
m.attr("defined___cpp_noexcept_function_type") = false;
#endif
py::class_<UserType>(m, "UserType", "A `py::class_` type for testing")
.def(py::init<>())
.def(py::init<int>())