redundantNewKeyword only sometimes works, only rarely warns FL0014

[abelbraaksma]

Description

It appears as if redundantNewKeyword works only occasionally. I rarely see it warning with FL0014.

Repro steps

The following code doesn't raise FL0014:

new System.Collections.Generic.Dictionary<string, string>() |> ignore
new Guid() |> ignore

Yet the following does:

new Int32() |> ignore

Expected behavior

Unless IDisposable is implemented, it should raise FL0014. This doesn't happen.

Actual behavior

For most real-world code, it doesn't raise "Usage of 'new' keyword here is redundant".

Known workarounds

None

Related information

• Operating system: Win10/Win11
• Branch: most recent as of today with dotnet install
• .NET Runtime, CoreCLR or Mono Version: .NET 6.0

[abelbraaksma]

Thanks for picking this up and solving this, awesome work!