Debugging Julia with OMJulia gives ZMQ.StateError

[AnHeuermann]

Description

I'm using VS Code and the Julia extension to debug my Julia projects.
When debugging code that also uses OMJulia I'm hitting errors I don't see when running the code without the debugger.

How to reproduce

When starting to debug a file with

using OMJulia
using OMJulia: sendExpression

omc = OMCSession()
sendExpression(omc, "loadModel(Modelica)")
sendExpression(omc, "simulate(Modelica.Electrical.Analog.Examples.CauerLowPassAnalog)")
sendExpression(omc, "quit()", parsed=false)

@error "Try to break before you hit me!"

I'm hitting an error in ZMQ.jl package:

Exception has occurred: ZMQ.StateError
ZMQ.StateError("Success")

Stacktrace:
 [1] _recv!(socket::ZMQ.Socket, zmsg::ZMQ.Message)
   @ ZMQ ~/.julia/packages/ZMQ/R3wSD/src/comm.jl:73
 [2] recv(socket::ZMQ.Socket)
   @ ZMQ ~/.julia/packages/ZMQ/R3wSD/src/comm.jl:94
 [3] sendExpression(omc::OMJulia.OMCSession, expr::String; parsed::Bool)
   @ OMJulia ~/workdir/julia/OMJulia.jl/src/OMJulia.jl:183
 [4] sendExpression(omc::OMJulia.OMCSession, expr::String)
   @ OMJulia ~/workdir/julia/OMJulia.jl/src/OMJulia.jl:180
 [5] top-level scope
   @ ~/workdir/julia/OMJulia.jl/bug.jl:6

I'm not sure if this is a ZMQ problem or the omc.socket from OMJulia is different when I'm debugging.

Without debugging

omc.socket = ZMQ.Socket(Ptr{Nothing} @0x0000000003818660, FileWatching._FDWatcher(Ptr{Nothing} @0x0000000003b9c910, 35, (1, 0), Base.GenericCondition{Base.Threads.SpinLock}(Base.InvasiveLinkedList{Task}(nothing, nothing), Base.Threads.SpinLock(0)), 0, (false, false)))

with debugging

omc.socket = ZMQ.Socket(Ptr{Nothing} @0x000000000305cce0, FileWatching._FDWatcher(Ptr{Nothing} @0x0000000002a8a950, 34, (1, 0), Base.GenericCondition{Base.Threads.SpinLock}(Base.InvasiveLinkedList{Task}(nothing, nothing), Base.Threads.SpinLock(0)), 0, (false, false)))

Versions 'n stuff

• OS: Ubuntu Focal

• julia> versioninfo()
  Julia Version 1.8.1
  Commit afb6c60d69a (2022-09-06 15:09 UTC)
  Platform Info:
    OS: Linux (x86_64-linux-gnu)
    CPU: 48 × Intel(R) Xeon(R) Gold 6248R CPU @ 3.00GHz
    WORD_SIZE: 64
    LIBM: libopenlibm
    LLVM: libLLVM-13.0.1 (ORCJIT, cascadelake)
    Threads: 1 on 48 virtual cores

• OMJulia v0.2.0 @d1e889924f0940dc9bbbc0bd13f676b1cb297151