IronLanguages / IronLanguages/ironpython3

memoryview assignment fails for .NET numeric types

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.NET interop
Dominant language
C#
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Merged PRs (30d)
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Description

The following should work:

import System
m = memoryview(bytearray(1))
m[0] = System.Byte()

Appears to be a regression from IronPython 2. Causes socket.recvfrom_into(memoryview) to fail. The C# implementation of recvfrom_into should probably be rewritten to use IPythonBuffer, but still seems like a valid use case.

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with the memoryview assignment reproduction using System.Byte and compare it with the IronPython 2 behavior. Then inspect the C# implementation of recvfrom_into and the IPythonBuffer references mentioned in the issue; done means the assignment succeeds and the memoryview use case no longer causes recvfrom_into to fail.

Written by the indexing model from the issue text.

Assessment

Tech stack
csharp, python
Domain
backend
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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