Consider adding Microsoft.VisualStudio.Threading.Analyzers

[neoscie]

It's a "code analyzer to detect common mistakes or potential issues regarding threading and async coding.".

it would introduce new rules:
https://github.com/microsoft/vs-threading/blob/main/doc/analyzers/index.md

Nuget: https://www.nuget.org/packages/microsoft.visualstudio.threading.analyzers

[drebrez]

Please ensure that a warning/error appears for this example case

In my opinion this should be avoided in 99.9% of the cases as it might lead to unwanted behavior.
If someone want to actually spawn threads in a loop without waiting for them to finish/fail, then they should simply suppress the rule at that point.

It might be the VSTHRD100 rule but I didn't tested it.