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C#: Fix assembly attribute extraction in standalone mode#14792

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tamasvajk merged 1 commit into
github:mainfrom
tamasvajk:standalone/assembly-attribute
Nov 16, 2023
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C#: Fix assembly attribute extraction in standalone mode#14792
tamasvajk merged 1 commit into
github:mainfrom
tamasvajk:standalone/assembly-attribute

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@tamasvajk tamasvajk commented Nov 15, 2023 •
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This PR tries to fix assembly attribute extraction in standalone mode. I can't reliably repro the issue, but occasionally we're seeing the below exception:

Exception has occurred: CLR/System.ArgumentOutOfRangeException
Exception thrown: 'System.ArgumentOutOfRangeException' in Microsoft.CodeAnalysis.dll: 'Specified argument was out of the range of valid values.'
   at Microsoft.CodeAnalysis.SeparatedSyntaxList`1.get_Item(Int32 index)
   at Microsoft.CodeAnalysis.SeparatedSyntaxList`1.Enumerator.get_Current()
   at Semmle.Extraction.CSharp.Populators.TypeContainerVisitor.VisitAttributeList(AttributeListSyntax node) in .../ql/csharp/extractor/Semmle.Extraction.CSharp/Populators/TypeContainerVisitor.cs:line 92

I don't know if this fix is really fixing the problem, but it avoids using Microsoft.CodeAnalysis.SeparatedSyntaxList1.Enumerator.get_Current()`, which might be causing the issue.

@github-actions github-actions Bot added the C# label Nov 15, 2023
@tamasvajk tamasvajk changed the title C#: Add test for assembly attributes in standalone extraction C#: Extract assembly attributes in standalone extraction Nov 15, 2023
@tamasvajk tamasvajk force-pushed the standalone/assembly-attribute branch from 3db94e5 to 7a001f4 Compare November 15, 2023 11:21
@tamasvajk tamasvajk changed the title C#: Extract assembly attributes in standalone extraction C#: Fix assembly attribute extraction in standalone mode Nov 15, 2023
@tamasvajk tamasvajk marked this pull request as ready for review November 15, 2023 12:47
@tamasvajk tamasvajk requested a review from a team as a code owner November 15, 2023 12:47
michaelnebel
michaelnebel approved these changes Nov 15, 2023
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LGTM 👍
It will be interesting to see, if this yields crashes as well
The enumeration logic seems quite complicated (I just peeked the decompiled code). Does it make sense to run DCA to see if this has any semantical change that the tests didn't catch?

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tamasvajk commented Nov 16, 2023

DCA doesn't show any change.

@tamasvajk tamasvajk merged commit 14268f3 into github:main Nov 16, 2023
@tamasvajk tamasvajk mentioned this pull request Nov 16, 2023
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