Is it possible to dump segfault stack trace from REPL-only crash?

General Usage
1

I ran into this issue https://github.com/julia-vscode/julia-vscode/issues/2299 that can only be reproduced in the REPL (one that’s connected to VS Code). I am trying to obtain a useful dump from the segfault following Reporting and analyzing crashes (segfaults) · The Julia Language. However, the line

$ gdb --args usr/bin/julia-debug <path_to_your_script>

requires a script to be run. Is it possible to use gdb with the julia REPL instead of a script so that I can debug the above issue?

2

Might be possible to try using the ability to produce an rr trace with --bug-report=rr which will upload the trace to S3 or --bug-report=rr-local which will save it to a local file. That will only work on Linux, however, which may not be helpful to you.

3

Thank you for the suggestion, though as you hinted it won’t work for me (I’m on OSX).

I did manage to attach lldb to a running REPL process, so I think there’s a path forward that way.

4

Yeah, you can absolutely attach a debugger to a REPL process. Good luck!