VSCode Debugger bugs (are these known issues?)

Tooling
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1

I’ve been trying out the Julia debugger in VSCode and found a few issues with it.
Windows 11, VSCode 1.93.1, julia-vscode v1.123.2

Are these all known issues? If not, where should I report them, the VScode plugin project, or Debugger?

REPL Mode
within REPL, @run only works once per session; otherwise it hangs and never hits the breakpoint.

Run & Debug Mode
Can’t change breakpoints while paused. Also, this breaks the ‘Run to Cursor’ feature.

Julia: Compiled Code mode worked initially, but stopped working as soon as I changed it. ‘Apply default’ appears to work, but did not restore functionality.

Debugger stopped working at one point and I needed to restart VSCode. Not sure how to repro this one, but I’ll try to identify repro steps.

2

What version of Julia? What is in your global Project.toml file? Do you have a piece code that can replicate this behavior in a fresh directory?

You can open issues on the Julia VSCode extension GitHub, but I think you’re more likely to get help here.

1 Like
3

Julia 1.10.5

This is in a new project, only added Revise, Infiltrator

Another person encountered the only can @run once per session bug:

4

I’ll try to give it a go tomorrow and see if I can figure anything out!

5

For me this happens in every project. I’ve got about 5 I regularly mess with all with very different dependencies. Here’s my startup.jl file, if that is helpful:

using Pkg

let
    pkgs = ["BenchmarkTools", "OhMyREPL", "Revise", "Crayons"]
    for pkg in pkgs
        if Base.find_package(pkg) === nothing
            Pkg.add(pkg)
        end
    end
end

using BenchmarkTools
using OhMyREPL
using Crayons
import OhMyREPL: Passes.SyntaxHighlighter

try
    using Revise
catch e
    @warn "Error initializing Revise" exception = (e, catch_backtrace())
end



function vscode_color_scheme()
    scheme = SyntaxHighlighter.ColorScheme()

    # colors to match VSCode dark color scheme
    SyntaxHighlighter.string!(scheme, crayon"ce9178")
    SyntaxHighlighter.comment!(scheme, crayon"6A9955")
    SyntaxHighlighter.function_def!(scheme, crayon"DCDCAA")
    SyntaxHighlighter.call!(scheme, crayon"DCDCAA")
    SyntaxHighlighter.macro!(scheme, crayon"DCDCAA")
    SyntaxHighlighter.error!(scheme, crayon"F44747")
    SyntaxHighlighter.number!(scheme, crayon"B5CEA8")
    SyntaxHighlighter.op!(scheme, crayon"d4d4d4")
    SyntaxHighlighter.keyword!(scheme, crayon"569cd6")
    SyntaxHighlighter.symbol!(scheme, crayon"4EC9B0")
    SyntaxHighlighter.argdef!(scheme, crayon"4EC9B0")

    return scheme
end

SyntaxHighlighter.add!("VSCode", vscode_color_scheme())
colorscheme!("VSCode")

ENV["JULIA_EDITOR"] = "code.cmd"

I also created a new empty project with just one file and no dependencies. Here’s the contents of the file:

module Garb

greet() = print("Hello World!")
export greet

end # module Garb

and here are the dependencies:

(Garb) pkg> st
Project Garb v0.1.0
Status `C:\Users\seatt\OneDrive\Documents\temp\Garb\Project.toml` (empty project)

Here’s the result of doing @run greet() twice:

julia> using Garb

julia> @run greet()
Hello World!
julia> @run greet() #debugger goes into infinite wait loop here
6

Report having the same issue

7

I have the same issue.

8

Yes, unfortunately a recurrent issue. But it’s probably not a direct fault of the Julia extension. At least things did not change when I went back to versions that I know were working before.

9

Could this issue be caused by recent updates to Visual Studio Code? It’s not isolated to Windows, so it might be a more general problem: Debugger runs fine once. When I use it again, it seems to be stuck in a loop · Issue #3688 · julia-vscode/julia-vscode · GitHub