Swift REPL does not start

[thorsteneb]

• Your Windows build number: 18894 20H1 Insider build - same behavior on 1809 release
  WSL 1, Ubuntu 18.04
  Swift 5.01 installed from https://swift.org/download/
  Please note this NOT a duplicate of fis-gtm does not run due to missing support for executable stack #286 , the execstack issue has since been solved upstream in Swift

• What you're doing and what's happening:
  Execute 'swift'
  Terminal does not show further output, Ctrl-C does not end swift REPL. strace shows "process launch failed: 'A' packet returned an error: 8"

tbehrens@WSL-INSIDERTEST:~$ swift -version
Swift version 5.0.1 (swift-5.0.1-RELEASE)
Target: x86_64-unknown-linux-gnu
tbehrens@WSL-INSIDERTEST:~$ swift


^C


^C

• What's wrong / what should be happening instead:
  swift REPL should start, output along the lines of:

Welcome to Apple Swift version 5.01. Type :help for assistance.
  1>

• Strace of the failing command, if applicable:

swift-strace.txt

From roughly line 4340 in strace, a number of EBADF, then on line 6383, a failed ptrace with EPERM followed by an fseek with ESPIPE.

Same behavior with "sudo /path/to/swift/usr/bin/swift"

[the-provost]

I encountered the same issue. Any fixes or workarounds?

[thorsteneb]

Workaround: Use WSL 2.

[bmaciag]

Same issue here.

[yostane]

Same issue

[yostane]

Workaround: Use WSL 2.

I confirm. Debugging and REPL do not function on WSL1. On WSL2 we can do both REPL and debugging.

[yostane]

Maybe we can close this issue ? @thorsteneb

[thorsteneb]

Certainly. I think closing it says something about ongoing WSL 1 development - and, I am perfectly fine by that.
Go ahead and close!

[yostane]

Certainly. I think closing it says something about ongoing WSL 1 development - and, I am perfectly fine by that.
Go ahead and close!

Sorry, I am not a contributor so I can't close tickets. Maybe someone from WSL team can close it ?