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Bug Don't report <LangVersion>latest</LangVersion> because it triggers some analyzers

Discussion in '2021.1 Beta' started by aybe, Nov 11, 2020.

  1. aybe

    aybe

    Joined:
    Feb 20, 2019
    Posts:
    53
    Issues such as IDE0090: 'new' expression can be simplified are inappropriately raised because C# 9 isn't yet supported by Unity.

    Thanks :)
     
    aybe, Nov 11, 2020
    #1
    morhun_EP and escape_artist like this.

  2. Stakk3r

    Stakk3r

    Joined:
    Mar 10, 2020
    Posts:
    1
    Still having this problem with 2021... very annoying to see those problem markers all around my code! Is there a way to manually fix the LangVersion?
     
    Stakk3r, Mar 31, 2021
    #2

  3. WarpedPixel

    WarpedPixel

    Joined:
    Jun 21, 2020
    Posts:
    3
    Yes. In your .csproj files (which Unity regenerates every now and then), look for
    <LangVersion>latest</LangVersion> and replace latest by 8.0. Arguably a Unity bug since it doesn't actually support the latest C# available. This is annoying because it will be stomped on anytime the csproj is regenerated. You could write an Editor script that fixes this automatically.
     
    WarpedPixel, May 26, 2021
    #3
    mbchapman likes this.

  4. chemicalcrux

    chemicalcrux

    Joined:
    Mar 16, 2017
    Posts:
    717
    I have run into this problem in 2020.3.13f1 as well. Strangely, if I manually regenerate the csproj files from the Preferences -> External Tools menu, it writes 8.0 into <LangVersion>.
     
    chemicalcrux, Jul 16, 2021
    #4
    Oneiros90 and mbchapman like this.

  5. mbchapman

    mbchapman

    Joined:
    May 31, 2021
    Posts:
    6
    Preferences -> External Tools -> "Regenerate project files"


    This also works for me in 2020.3.14f1.
     
    mbchapman, Sep 14, 2021
    #5