DYN-8247 : feature/rebase upstream 313 #3
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* Use non-BOM encodings The documentation of the used `PyUnicode_DecodeUTF16` states that not passing `*byteorder` or passing a 0 results in the first two bytes, if they are the BOM (U+FEFF, zero-width no-break space), to be interpreted and skipped, which is incorrect when we convert a known "non BOM" string, which all strings from C# are.
* Expose an API for users to specify their own formatter Adds post-serialization and pre-deserialization hooks for additional customization. * Add API for capsuling data when serializing * Add NoopFormatter and fall back to it if BinaryFormatter is not available --------- Co-authored-by: Benedikt Reinartz <filmor@gmail.com>
When nulling the GC handles on shutdown the reference count of all objects pointed to by the IntPtr in the `CLRObject.reflectedObjects` are zero. This caused an exception in some scenarios because `Runtime.PyObject_TYPE(reflectedClrObject)` is called while the reference counter is at zero. After `TypeManager.RemoveTypes();` is called in the `Runtime.Shutdown()` method, reference count decrements to zero do not invoke `ClassBase.tp_clear` for managed objects anymore which normally is responsible for removing references from `CLRObject.reflectedObjects`. Collecting objects referenced in `CLRObject.reflectedObjects` only after leads to an unstable state in which the reference count for these object addresses is zero while still maintaining them to be used for further pseudo-cleanup. In that time, the memory could have been reclaimed already which leads to the exception.
Otherwise, collecting all at this earlier point results in corrupt memory for derived types.
* Use non-BOM encodings * Copy potential BOM to the output of PyString_FromString The documentation of the used `PyUnicode_DecodeUTF16` states that not passing `*byteorder` or passing a 0 results in the first two bytes, if they are the BOM (U+FEFF, zero-width no-break space), to be interpreted and skipped, which is incorrect when we convert a known "non BOM" string, which all strings from C# are. * Default to UTF8 for StrPtr
…or some other internal errors (pythonnet#2409) * not all events have Add method fixes pythonnet#2405 * give users some idea of why we might be unable to reflect .NET types to Python for them * mentioned event Add method crash fix in changelog
Otherwise if you have a Python object that needs to temporarily create a .NET object in its destructor (for instance write log summary to a file), its destructor will fail if it happens to be freed on the second iteration of loop breaking.
…on-gc Fix access violation exception on shutdown
Was only used in the console and might not be available in some embedding scenarios.
Verified them locally, but there is an issue with the Github workflow image that can hopefully be resolved later by using a full venv instead of relying on the system environment.
fixed crash for all other types (now properly throws TypeError) fixes pythonnet#2530
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Locally I can build only if I unload |
twastvedt
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Sep 24, 2025
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Assuming this is mostly just a clean merge, looks good!
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What does this implement/fix? Explain your changes.
Merged from pythonnet master to support pythonnet 3.13
Does this close any currently open issues?
Task related to DYN-8247
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AUTHORSCHANGELOG@twastvedt