System.Xml.CharCheckingReaderTests.CharCheckingReaderTest fails with OutOfMemoryException

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难度
4/5
预计耗时
3-5 天
新手友好度
15/100
Issue 类型
缺陷
描述清晰度
需要澄清
活跃度
活跃
技术栈
csharp, xml
领域
testing

调研方向

The failing test is System.Xml.CharCheckingReaderTests.CharCheckingReaderTest.RunTests with the testCase 'ReadBinHex runs into an Overflow' in the System.Private.Xml.Tests project. Start by reading that test case to see how it builds its large input, then check the Helix log in the linked build to confirm the OutOfMemoryException. The issue does not say what to change, so first ask the maintainers whether the fix should reduce memory use or adjust the test. Done means the test passes reliably under parallel execution.

由索引模型根据 Issue 内容生成。

描述

area-System.Xml blocking-clean-ci Known Build Error untriaged 
  Starting:    System.Private.Xml.Tests (parallel test collections = on [4 threads], stop on fail = off)
    System.Xml.CharCheckingReaderTests.CharCheckingReaderTest.RunTests(testCase: ReadBinHex runs into an Overflow) [FAIL]
      System.OutOfMemoryException : Exception of type 'System.OutOfMemoryException' was thrown.
    System.Xml.CharCheckingReaderTests.CharCheckingReaderTest.RunTests(testCase: ReadBinHex runs into an Overflow) [FAIL]
      System.OutOfMemoryException : Exception of type 'System.OutOfMemoryException' was thrown.
  Finished:    System.Private.Xml.Tests

Build Information

Build: https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_build/results?buildId=1657668
Build error leg or test failing: System.Xml.CharCheckingReaderTests.CharCheckingReaderTest.RunTests
Pull request: https://github.com/dotnet/runtime/pull/136699

Error Message

DO NOT USE JSON BELOW IF THIS IS A BUILD BREAK otherwise build analysis will allow pull requests to merge that break the build worse. For a build break, do not use this issue form. Make a regular new issue.

Fill the error message using step by step known issues guidance.

{
  "ErrorMessage": ["System.Xml.CharCheckingReaderTests.CharCheckingReaderTest.RunTests(testCase: ReadBinHex runs into an Overflow) [FAIL]","OutOfMemoryException"],
  "ErrorPattern": "",
  "BuildRetry": false,
  "ExcludeConsoleLog": false
}
Known issue validation

Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=1657668
Error message validated: [System.Xml.CharCheckingReaderTests.CharCheckingReaderTest.RunTests(testCase: ReadBinHex runs into an Overflow) [FAIL] OutOfMemoryException]
Result validation: ✅ Known issue matched with the provided build.
Validation performed at: 11/1/2026 3:37:17 AM UTC

Report
Build Repository Test Pull Request
1657668 dotnet/runtime System.Xml.CharCheckingReaderTests.CharCheckingReaderTest.RunTests dotnet/runtime#136699
Summary
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