[wasm] `System.Runtime.Serialization.Xml`, and `System.Runtime.Serialization.Xml.ReflectionOnly` tests breaking for AOT on rolling builds

[radical]

• System.Runtime.Serialization.Xml.Tests

[22:09:34] fail: [FAIL] XmlDictionaryWriterTest.XmlBaseWriter_WriteString
[22:09:34] info: System.ArgumentException : The output byte buffer is too small to contain the encoded data, encoding codepage '65001' and fallback 'System.Text.EncoderReplacementFallback'. (Parameter 'bytes')
[22:09:34] info:    at System.Reflection.MethodInvoker.Invoke(Object , IntPtr* , BindingFlags )

• System.Runtime.Serialization.Xml.ReflectionOnly.Tests

[21:50:14] fail: [FAIL] XmlDictionaryWriterTest.XmlBaseWriter_WriteString
[21:50:14] info: System.ArgumentException : The output byte buffer is too small to contain the encoded data, encoding codepage '65001' and fallback 'System.Text.EncoderReplacementFallback'. (Parameter 'bytes')
[21:50:14] info:    at System.Reflection.MethodInvoker.Invoke(Object , IntPtr* , BindingFlags )

Broken in rolling builds since Apr 14 - https://dev.azure.com/dnceng-public/public/_build/results?buildId=242119&view=results . The changes since the previous rolling build were - e3a80f3...3182dfb .

Known Issue Error Message

Fill the error message using known issues guidance.

{
  "ErrorPattern": "System.ArgumentException : The output byte buffer is too small to contain the encoded data, encoding codepage '65001' and fallback 'System.Text.EncoderReplacementFallback'",
  "BuildRetry": false
}

Report

Summary

24-Hour Hit Count	7-Day Hit Count	1-Month Count
0	0	0

Tagging subscribers to 'arch-wasm': @lewing
See info in area-owners.md if you want to be subscribed.

Issue Details

---

• System.Runtime.Serialization.Xml.Tests

[22:09:34] fail: [FAIL] XmlDictionaryWriterTest.XmlBaseWriter_WriteString
[22:09:34] info: System.ArgumentException : The output byte buffer is too small to contain the encoded data, encoding codepage '65001' and fallback 'System.Text.EncoderReplacementFallback'. (Parameter 'bytes')
[22:09:34] info:    at System.Reflection.MethodInvoker.Invoke(Object , IntPtr* , BindingFlags )

• System.Runtime.Serialization.Xml.ReflectionOnly.Tests

[21:50:14] fail: [FAIL] XmlDictionaryWriterTest.XmlBaseWriter_WriteString
[21:50:14] info: System.ArgumentException : The output byte buffer is too small to contain the encoded data, encoding codepage '65001' and fallback 'System.Text.EncoderReplacementFallback'. (Parameter 'bytes')
[21:50:14] info:    at System.Reflection.MethodInvoker.Invoke(Object , IntPtr* , BindingFlags )

Broken in rolling builds since Apr 14 - https://dev.azure.com/dnceng-public/public/_build/results?buildId=242119&view=results . The changes since the previous rolling build were - e3a80f3...3182dfb .

Author:	radical
Assignees:	-
Labels:	arch-wasm, blocking-clean-ci, area-Codegen-AOT-mono, test-failure
Milestone:	-