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8210 :: integrate with dll's procs that returns gced types

• bung (orginal) [2021-07-08T04:48:31+02:00] view original

  type
    InitSubmodule = proc(mem:seq[string]): Submodule{.gcsafe, cdecl.}
    NewSubmodule = proc(mem:seq[string]): Submodule{.gcsafe, cdecl.}
  
  when isMainModule:
    const themeFile = currentSourcePath.parentDir / "dllgen" / "theme.nim"
    const themePath = currentSourcePath.parentDir / "dllgen" / libThemeName
    let cmd = "nim c --gc:boehm -d:createNimRtl " & (when defined(release): "-d:release" else: "") &
        " --app:lib --verbosity:0 --hints:off -w:off " & themeFile
    let r = execCmdEx(cmd)
    if r.exitCode != 0:
      removeFile(themePath)
      quit(1)
    let libTheme = loadLib(themePath)
    let initSubmodule = cast[InitSubmodule](libTheme.symAddr("initSubmodule"))
    echo initSubmodule(@["a","b"])
    let newSubmodule = cast[NewSubmodule](libTheme.symAddr("newSubmodule"))
    echo newSubmodule(@["a","b"])
  Run

  I get

  
  (name: "Anonymous", mem: @["a", "b"])
  (name: "", mem: @[])
  Run

  I'v create a repo to demonstrate this problem.

  see the CI result. https://github.com/bung87/dllgen/runs/3015081926?check_suite_focus=true

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• Araq (orginal) [2021-07-09T07:51:53+02:00] view original

  I'v create a repo to demonstrate this problem.

  What is the problem?

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• bung (orginal) [2021-07-09T08:23:13+02:00] view original

  variables pass to dll proc could be nil , in dll proc loop variable could be nil, get dll proc returns in main program could be nil.

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