System.CodeDom.Tests failed with System.NullReferenceException : Object reference not set to an instance of an object

[VincentBu]

Run: runtime 20210520.95

Failed tests:

net6.0-Linux-Release-arm64-CoreCLR_checked-(Alpine.312.Arm64.Open)Ubuntu.1804.ArmArch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:alpine-3.12-helix-arm64v8-20200602002604-25f8a3e

- System.CodeDom.Tests.CodeTypeParameterCollectionTests.AddRange_CodeStatementArray_Works
- System.CodeDom.Tests.CodeTypeParameterCollectionTests.AddRange_CodeStatementCollection_Works
- System.CodeDom.Tests.CodeTypeParameterCollectionTests.Ctor_Array_Works
- System.CodeDom.Tests.CodeTypeParameterCollectionTests.Ctor_CodeStatementCollection_Works

net6.0-windows-Release-arm64-CoreCLR_release-Windows.10.Arm64.Open

- System.CodeDom.Tests.CodeAttributeArgumentCollectionTests.AddRange_CodeStatementArray_Works
- System.CodeDom.Tests.CodeAttributeArgumentCollectionTests.AddRange_CodeStatementCollection_Works
- System.CodeDom.Tests.CodeAttributeArgumentCollectionTests.Ctor_Array_Works
- System.CodeDom.Tests.CodeAttributeArgumentCollectionTests.Ctor_CodeStatementCollection_Works

One of Error messages:

System.NullReferenceException : Object reference not set to an instance of an object.


Stack trace
   at System.CodeDom.Tests.CodeCollectionTestBase`2.AddRange_TestData() in System.CodeDom.Tests.dll:token 0x6000423+0x0

[ghost]

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Issue Details

---

Run: runtime 20210520.95

Failed tests:

net6.0-Linux-Release-arm64-CoreCLR_checked-(Alpine.312.Arm64.Open)Ubuntu.1804.ArmArch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:alpine-3.12-helix-arm64v8-20200602002604-25f8a3e

- System.CodeDom.Tests.CodeTypeParameterCollectionTests.AddRange_CodeStatementArray_Works
- System.CodeDom.Tests.CodeTypeParameterCollectionTests.AddRange_CodeStatementCollection_Works
- System.CodeDom.Tests.CodeTypeParameterCollectionTests.Ctor_Array_Works
- System.CodeDom.Tests.CodeTypeParameterCollectionTests.Ctor_CodeStatementCollection_Works

net6.0-windows-Release-arm64-CoreCLR_release-Windows.10.Arm64.Open

- System.CodeDom.Tests.CodeAttributeArgumentCollectionTests.AddRange_CodeStatementArray_Works
- System.CodeDom.Tests.CodeAttributeArgumentCollectionTests.AddRange_CodeStatementCollection_Works
- System.CodeDom.Tests.CodeAttributeArgumentCollectionTests.Ctor_Array_Works
- System.CodeDom.Tests.CodeAttributeArgumentCollectionTests.Ctor_CodeStatementCollection_Works

One of Error messages:

System.NullReferenceException : Object reference not set to an instance of an object.


Stack trace
   at System.CodeDom.Tests.CodeCollectionTestBase`2.AddRange_TestData() in System.CodeDom.Tests.dll:token 0x6000423+0x0

Author:	VincentBu
Assignees:	-
Labels:	arch-arm64, area-System.CodeDom, os-linux, os-windows
Milestone:	-

[VincentBu]

Also failed in MonoTests and System.Collections.Generic.Tests

Run: runtime-coreclr libraries-jitstress 20210523.1 and runtime-coreclr libraries-jitstress2-jitstressregs 20210522.1

Failed tests:

- MonoTests.System.Data.EnumerableRowCollectionTest.ThenBy
- MonoTests.System.Data.EnumerableRowCollectionTest.QueryWhereSelectOrderBy
- MonoTests.System.Data.EnumerableRowCollectionTest.ThenByDescending
- MonoTests.System.Data.EnumerableRowCollectionTest.QueryWhereSelectOrderByDescending
- MonoTests.System.Data.EnumerableRowCollectionTest.QueryWhereSelect
- System.Collections.Generic.Tests.LargeArrayBuilderTestsInt32.AddCountAndToArray
- System.Collections.Generic.Tests.LargeArrayBuilderTestsInt32.AddRange
- System.Collections.Generic.Tests.LargeArrayBuilderTestsInt32.CopyTo
- System.Collections.Generic.Tests.LargeArrayBuilderTestsInt32.MaxCapacity
- System.CodeDom.Tests.CodeExpressionCollectionTests.AddRange_CodeStatementArray_Works
- System.CodeDom.Tests.CodeExpressionCollectionTests.AddRange_CodeStatementCollection_Works
- System.CodeDom.Tests.CodeExpressionCollectionTests.Ctor_Array_Works
- System.CodeDom.Tests.CodeExpressionCollectionTests.Ctor_CodeStatementCollection_Works

Error message:

System.NullReferenceException : Object reference not set to an instance of an object.


Stack trace
   at System.Data.DataRowExtensions.UnboxT`1.ReferenceField(Object value) in /_/src/libraries/System.Data.Common/src/System/Data/DataRowExtensions.cs:line 163
   at System.Data.DataRowExtensions.Field[T](DataRow row, String columnName) in /_/src/libraries/System.Data.Common/src/System/Data/DataRowExtensions.cs:line 25
   at MonoTests.System.Data.EnumerableRowCollectionTest.<>c.<ThenBy>b__5_3(DataRow line) in /_/src/libraries/System.Data.DataSetExtensions/tests/Mono/EnumerableRowCollectionTest.cs:line 161
   at System.Linq.Enumerable.SelectEnumerableIterator`2.MoveNext() in /_/src/libraries/System.Linq/src/System/Linq/Select.cs:line 138
   at MonoTests.System.Data.EnumerableRowCollectionTest.ThenBy() in /_/src/libraries/System.Data.DataSetExtensions/tests/Mono/EnumerableRowCollectionTest.cs:line 166

[danmoseley]

Good bug report but I'll dupe against #53042 where there's discussion.