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@SonarTech SonarTech released this 18 Apr 14:10
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Release 8.56 is here and it brings a whole lot of improvements. We implemented S3900 and S3655 for VB.NET and at the same time, we also got improvements to the C# versions of S3900, S3655, S2222, and S2259. Special kudos to @Corniel who contributed new rule S5856 and several other enhancements.

New Rules

  • 6797 - [VB.NET] New Rule S3900 for VB.NET: Arguments of public methods should be validated against Nothing
  • 6795 - [VB.NET] New Rule S3655 for VB.NET: Empty nullable value should not be accessed
  • 6691 - [C#, VB.NET] New Rule S5856: Regex literals should be valid by @Corniel

Improvements (S3900, S3655, S2222, and S2259)

  • 6794 - [C#] Improve S3655: Support C# 9 and C# 10 syntax
  • 6793 - [C#] Improve S3900: Support C# 9 and C# 10 syntax
  • 6997 - [C#] Fix S3900: FN and FP
  • 7060 - [C#] Fix S3900 FP: Don't raise if parameter is captured
  • 2775 - [C#] Fix S3900 FP: is is not considered as null-check
  • 2670 - [C#] Fix S3900 FP: with string.IsNullOrEmpty
  • 7004 - [C#] Fix S3900: Change parameter dereference check to top-down
  • 6682 - [C#] Fix S3655 FP: HasValue checked with Pattern matching
  • 4250 - [C#] Fix S2259 FP: Lifted operator results in null value in value type comparison
  • 6994 - [C#, VB.NET] Fix S2222: Branch on createdNew parameter on Mutex constructor
  • 6840 - [C#, VB.NET] Fix S2259 FP/FN: Do not raise on Nullable members
  • 6241 - [C#, VB.NET] Fix S2259 FP: is null check on generic type
  • 6930 - [C#, VB.NET] Fix S2259 FN: Auto-Properties don't learn ObjectConstraint
  • 6898 - [C#, VB.NET] Fix S2259 FN: Raise on fields and events
  • 7048 - [VB.NET] Fix S2259 FP: ValidatedNotNullAttribute in extension method
  • 7047 - [VB.NET] Fix S3900 FP: Recognize VB extensions
  • 6991 - [VB.NET] Fix S3655 FN: VB implicit conversions

Other improvements

  • 6899 - Update RSPEC
  • 6910 - Fix S2094 FP: Allow to have empty classes, used as generic parameter
  • 6878 - [C#] Fix S1168 FP: Does not respect nullable annotations by @Corniel
  • 6890 - [C#, VB.NET] Fix S1123 FN: The explanation should not be null or whitespace by @Corniel

@Corniel contributions

  • 6691 - [C#, VB.NET] New Rule S5856: Regex literals should be valid
  • 6890 - [C#, VB.NET] Fix S1123 FN: The explanation should not be null or whitespace
  • 6825 - [C#] Expand the ShimLayer with ITypeSymbol.NullableAnnotation
  • 6878 - [C#] Fix S1168 FP: Does not respect nullable annotations