Updating to .NET SDK 8.0.400+ causes style warnings in generated code

[atifaziz]

Updating to .NET SDK 8.0.400 or later seems to cause a regression where style warnings are primarily flagged in the code generated by the docopt.net source generator.

Steps to reproduce

Change the version number in global.json to 8.0.400:

diff --git a/global.json b/global.json
index d031a763..db09cbbe 100644
--- a/global.json
+++ b/global.json
@@ -1,6 +1,6 @@
 {
   "sdk": {
-    "version": "8.0.200",
+    "version": "8.0.400",
     "rollForward": "latestPatch"
   }
 }

Build the solution:

dotnet build

The following errors are reported:

A:\MoreLINQ\main\bld\ExtensionsGenerator\ProgramArguments.cs(1,1,1,29): error IDE0240: Nullable directive is redundant (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/style-rules/ide0240)
A:\MoreLINQ\main\bld\ExtensionsGenerator\ProgramArguments.cs(45,17,45,23): error IDE0010: Populate switch (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/style-rules/ide0010)
A:\MoreLINQ\main\bld\ExtensionsGenerator\ProgramArguments.cs(69,21,69,27): error IDE0010: Populate switch (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/style-rules/ide0010)
A:\MoreLINQ\main\bld\ExtensionsGenerator\ProgramArguments.cs(81,37,81,43): error IDE0010: Populate switch (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/style-rules/ide0010)
A:\MoreLINQ\main\bld\ExtensionsGenerator\ProgramArguments.cs(86,45,86,112): error IDE0058: Expression value is never used (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/style-rules/ide0058)
A:\MoreLINQ\main\bld\ExtensionsGenerator\ProgramArguments.cs(92,45,92,112): error IDE0058: Expression value is never used (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/style-rules/ide0058)
A:\MoreLINQ\main\bld\ExtensionsGenerator\ProgramArguments.cs(98,45,98,121): error IDE0058: Expression value is never used (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/style-rules/ide0058)
A:\MoreLINQ\main\bld\ExtensionsGenerator\ProgramArguments.cs(104,45,104,113): error IDE0058: Expression value is never used (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/style-rules/ide0058)
A:\MoreLINQ\main\bld\ExtensionsGenerator\ProgramArguments.cs(113,33,113,49): error IDE0058: Expression value is never used (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/style-rules/ide0058)
A:\MoreLINQ\main\bld\ExtensionsGenerator\ProgramArguments.cs(119,29,119,45): error IDE0058: Expression value is never used (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/style-rules/ide0058)
A:\MoreLINQ\main\bld\ExtensionsGenerator\ProgramArguments.cs(133,37,133,108): error IDE0058: Expression value is never used (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/style-rules/ide0058)
A:\MoreLINQ\main\bld\ExtensionsGenerator\ProgramArguments.cs(139,33,139,49): error IDE0058: Expression value is never used (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/style-rules/ide0058)
A:\MoreLINQ\main\bld\ExtensionsGenerator\ProgramArguments.cs(145,29,145,45): error IDE0058: Expression value is never used (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/style-rules/ide0058)
A:\MoreLINQ\main\bld\ExtensionsGenerator\ProgramArguments.cs(155,33,155,96): error IDE0058: Expression value is never used (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/style-rules/ide0058)
A:\MoreLINQ\main\bld\ExtensionsGenerator\ProgramArguments.cs(161,29,161,45): error IDE0058: Expression value is never used (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/style-rules/ide0058)
A:\MoreLINQ\main\bld\ExtensionsGenerator\ProgramArguments.cs(170,17,170,33): error IDE0058: Expression value is never used (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/style-rules/ide0058)
A:\MoreLINQ\main\bld\ExtensionsGenerator\ProgramArguments.cs(176,13,176,36): error IDE0058: Expression value is never used (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/style-rules/ide0058)