UPDATE: Issue with forward slashes, not junctions.

See#4016 (comment).

Go To Definition fails for a symbol if the containing file is in a directory that is linked via NTFS junction or symbolic link.

Go To Definition fails for a symbol if the containing file is in a directory that is referenced with forward slashes in the .fsproj file.

In a .NET Standard F# project, this fails with error "Cannot navigate to the symbol under the caret."

In a .NET Framework F# project, this works.

In a .NET Standard C# project, this works.

Repro steps

In Visual Studio, create aClass Library (.NET Standard) F# project.

Create a .fs file in a subdir.

Create a junction to the subdir. (e.g. in Powershell run:New-Item myjunction -ItemType Junction -Value origsubdir)

Edit your .fsproj and manually reference the file using a forward slash.

In your main Library.fs, reference something from that file and then try to F12 to it. Results in error: "Cannot navigate to the symbol under the caret."

(Note that intellisense/compilation are working; just F12 fails.)

Related information

Visual Studio Community 2017 Preview
Version 15.5.0 Preview 4.0
Visual F# Tools (Experimental) 15.4.1.17112401 (from feed:https://dotnet.myget.org/F/fsharp-preview/vsix)
dotnet 2.1.1-preview-007165