Investigate why CA1815 violations were not reported

[Youssef1313]

Current behavior

There was few CA1815 violations (see #12029), but CI and local builds were green.

We already set that to error:

uno/.editorconfig

Lines 310 to 311 in bdd49d9

	# CA1815: Override equals and operator equals on value types
	dotnet_diagnostic.CA1815.severity = error

[Youssef1313]

@mavasani Sorry for the ping, looking at binlog, it looks like everything is right on our end:

[Youssef1313]

IntelliSense shows the error correctly, but not on build.

[sharwell]

@Youssef1313 Note that .globalconfig is the true replacement for ruleset files. I would generally recommend placing all of the dotnet_diagnostic.[id].severity lines in .globalconfig instead of .editorconfig.

Have you checked the value of SkipAnalyzers in the log?

[Youssef1313]

@sharwell It's empty.

Yeah I'm planning to move to .globalconfig, but in this case .editorconfig is supposed to just work right?

[Youssef1313]

@sharwell fyi this is still an issue with globalconfig and also updated NetAnalyzers package to 8.0.0-preview1.23165.1

[Youssef1313]

I was able to root this down.

Most classes here have an auto-generated partial. When it happens that this is the first location of a symbol, the diagnostic isn't reported because the analyzer is configured to not report on generated code.

[MartinZikmund]

@Youssef1313 Weird behavior! It sounds like this is something that the .NET team should address though

[Youssef1313]

Related Roslyn issue: dotnet/roslyn#69543