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@dotnet/roslyn-compiler PTAL |
The `OutputKind` value was not properly round tripping through the PDB. Instead we were only distinguishing between roughly exe and dll outputs. The compiler though knows about six different output kinds and that both impacts the manner in which compilation takes place as well as what values are encoded into the PDB (impacts the `Subsystem` value for example). Properly round tripping the output kind here.
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I am a little nervous that we are going to find out about n-factorial eventually
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Not gotta lie, I screwed this up once and was pleasantly surprised at how well test explorer scaled to my massive mistake
| public const string OptionInfer = "option-infer"; | ||
| public const string OptionExplicit = "option-explicit"; | ||
| public const string OptionCompareText = "option-compare-text"; | ||
| public const string OutputKind = "output-kind"; |
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output [](start = 42, length = 6)
Can't the exact kind be inferred from the headers? It's not ideal when we duplicate information that's already there.
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I was unable to find a way to do this. If you can see a way I'm happy to flip to using that but there didn't seem to be the necessary info in the headers for all of the output kinds that we support.
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You're right, there is no way to distinguish winmdobj vs library. Everything else could be distinguished.
- OutputKind.ConsoleApplication: Subsystem.WindowsCui
- OutputKind.WindowsApplication: Subsystem.WindowsGui
- OutputKind.WindowsRuntimeApplication: Subsystem.WindowsGui && DllCharacteristics.AppContainer
- OutputKind.WindowsRuntimeMetadata: Characteristics.Dll && IsAssembly
- OutputKind.DynamicallyLinkedLibrary: Characteristics.Dll && IsAssembly
- OutputKind.NetModule: Characteristics.Dll && !IsAssembly
These two command lines result in the same output:
csc /target:winmdobj a.cs /out:1\a.dll /deterministic /subsystemversion:1.0
csc /target:library a.cs /out:2\a.dll /deterministic /subsystemversion:1.0
BTW: would be good to keep https://github.com/dotnet/roslyn/blob/main/docs/features/pdb-compilation-options.md#csharp-flags-that-can-be-derived-from-pdb-or-assembly up to date
In reply to: 608824123 [](ancestors = 608824123)
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My bad. I forgot we had put so much detail into that doc. It's out of date for a lot of changes I made. I will send a PR to get this current.
The
OutputKindvalue was not properly round tripping through the PDB. Insteadwe were only distinguishing between roughly exe and dll outputs. The compiler
though knows about six different output kinds and that both impacts the manner
in which compilation takes place as well as what values are encoded into the
PDB (impacts the
Subsystemvalue for example). Properly round tripping theoutput kind here.
This builds off #52321 and will be kept in draft until that PR is complete.