[generics/error message] `?typeid` shown in error message for missing type constraint

dotnet / fsharp

The F# compiler, F# core library, F# language service, and F# tooling integration for Visual Studio

https://dotnet.microsoft.com/languages/fsharp

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Open smoothdeveloper opened 5 years ago

smoothdeveloper commented 5 years ago

This code exposes internally generated type identifiers in error messages:

type C() =
    static member M<'a,'b>(a: 'a, b: 'b) = a + b

A type parameter is missing a constraint 'when ( ^a or ^b) : (static member ( + ) : ^a * ^b -> ^c) ...'

A type parameter is missing a constraint 'when ( ^a or ^b) : (static member ( + ) : ^a * ^b -> ^?8018)'

vs 2019 16.0.3 ionide 3.37.0

cartermp commented 5 years ago

Labeling as a bug due to not wanting to leak the type ID here. The missing constraint is correct though.

smoothdeveloper commented 5 years ago

probable location of the bug, or the callsite which gives some display settings as input parameter:

dsyme commented 2 years ago

abelbraaksma commented 2 months ago

This was closed as duplicate, but the resolution of the duplicate did not resolve this one. Reopening, as the typeid-error is still there:

Related: #3508