pybind/pybind11 v3.0.3

Version 3.0.3

on GitHub

Bug fixes:

• Fixed TSS key exhaustion in implicitly_convertible() when many implicit conversions are registered across large module sets.
  #6020

• Fixed heap-buffer-overflow in pythonbuf with undersized buffers by enforcing a minimum buffer size.
  #6019

• Fixed virtual-inheritance pointer offset crashes when dispatching inherited methods through virtual bases.
  #6017

• Fixed free(): invalid pointer crashes during interpreter shutdown with py::enum_<> by duplicating late-added def_property_static argument strings.
  #6015

• Fixed function_record heap-type deallocation to call PyObject_Free() and decref the type.
  #6010

• Hardened PYBIND11_MODULE_PYINIT and get_internals() against module-initialization crashes.
  #6018

• Fixed static_pointer_cast build failure with virtual inheritance in holder_caster_foreign_helpers.h.
  #6014

• Fixed ambiguous factory template specialization that caused compilation failures with nvcc + GCC 14.
  #6011

• Fixed crash in def_readwrite for non-smart-holder properties of smart-holder classes.
  #6008

• Fixed memory leak for py::dynamic_attr() objects on Python 3.13+ by clearing managed __dict__ contents during deallocation.
  #5999

• Fixed binding of noexcept and ref-qualified (&, &&) methods inherited from unregistered base classes.
  #5992

Internal:

• Moved tomlkit dependency to the dev dependency group.
  #5990

• Switched to newer public CPython APIs (PyType_GetFlags and public vectorcall APIs where available).
  #6005

Tests:

• Made an async callback test deterministic by replacing fixed sleep with bounded waiting.
  #5986

CI:

• Re-enabled Android tests in the cibuildwheel workflow.
  #6001