Unexpected shorthand lambda FS3570 with nested ignored tuple elements

[cmeeren]

I get an unexpected FS3570 when using nested ignored tuple elements:

    type A = { A: int }

    let f ((_x, y), z) = z |> Option.map _.A

Expected behavior

Compiles.

Actual behavior

Error FS3570 : The meaning of _ is ambiguous here. It cannot be used for a discarded variable and a function shorthand in the same scope.

Known workarounds

Don't use shorthand lambda, or don't ignore nested tuple elements.

[T-Gro]

@cmeeren :

Hi.
This issue should have been fixed with #16334 and hopefully available in the preview SDK.

[T-Gro]

Please let me know if it still persists, I will then reopen the issue and have a look.