[feat/precompile-pytypes] feat: move detail/class.h definitions to class-inl.h - #6133
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[feat/precompile-pytypes] feat: move detail/class.h definitions to class-inl.h#6133henryiii wants to merge 3 commits into
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All 32 functions in detail/class.h are non-template plumbing (type/slot machinery); move them out of line for the precompiled mode. Forward declarations of these functions in other headers lose their inline keyword to stay ODR-consistent in both modes. Assisted-by: ClaudeCode:claude-fable-5
Several functions are forward-declared in headers that cannot include class.h; GCC's -Wredundant-decls (used in CI cxx_flags) flags the second declaration. Assisted-by: ClaudeCode:claude-fable-5
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Description
Stacked on #6132. Second slice of the pre-compilation split: all 32 functions in
detail/class.hare non-template type/slot plumbing (make_new_python_type, metaclass andtp_*slot implementations, instance registration), so the whole implementation (~730 lines) moves todetail/class-inl.hvia thePYBIND11_INLINEmechanism from #6132. The header keeps the macros and declarations; slot functions are only used by address, so behavior is identical.Forward declarations of these functions in
trampoline_self_life_support.h,cpp_conduit.h,internals.h, andtype_caster_base.hlose theirinlinekeyword — required for ODR consistency in precompiled mode (caught by-Wundefined-inlineunder-Werror).Verified: full test suite passes in both modes; test binary size unchanged in header-only mode.
Suggested changelog entry:
📚 Documentation preview 📚: https://pybind11--6133.org.readthedocs.build/