Invalid regex literal causes Swift REPL to segfault

[bbrk24]

  1> let rgx = #/(.)(?<!.*\1.*\1)/#PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.
Stack dump without symbol names (ensure you have llvm-symbolizer in your PATH or set the environment var `LLVM_SYMBOLIZER_PATH` to point to it):
/home/bbrk24/swift/swift-5.9-RELEASE-ubuntu22.04/usr/bin/lldb(+0x22923)[0x564ff284c923]
/home/bbrk24/swift/swift-5.9-RELEASE-ubuntu22.04/usr/bin/lldb(+0x20cbe)[0x564ff284acbe]
/home/bbrk24/swift/swift-5.9-RELEASE-ubuntu22.04/usr/bin/lldb(+0x22f5a)[0x564ff284cf5a]
/lib/x86_64-linux-gnu/libc.so.6(+0x42520)[0x7faf277a0520]
/home/bbrk24/swift/swift-5.9-RELEASE-ubuntu22.04/usr/bin/../lib/../lib/swift/linux/libswiftCore.so(+0x3ef004)[0x7faf274e1004]
/home/bbrk24/swift/swift-5.9-RELEASE-ubuntu22.04/usr/bin/../lib/../lib/swift/linux/libswiftCore.so(+0x416e96)[0x7faf27508e96]
/home/bbrk24/swift/swift-5.9-RELEASE-ubuntu22.04/usr/bin/../lib/../lib/swift/linux/libswiftCore.so(swift_getWitnessTable+0x1393)[0x7faf275006b3]
/home/bbrk24/swift/swift-5.9-RELEASE-ubuntu22.04/usr/bin/../lib/liblldb.so.13git(+0x19aa84a)[0x7faf296b984a]

💣 Program crashed: Bad pointer dereference at 0x0000000000000000

Thread 22 "gger.io-handler" crashed:

0 0x00007faf274e1004

Segmentation fault

[llvmbot]

@llvm/issue-subscribers-lldb

Author: None (bbrk24)

``` 1> let rgx = #/(.)(?<!.*\1.*\1)/#PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace. Stack dump without symbol names (ensure you have llvm-symbolizer in your PATH or set the environment var `LLVM_SYMBOLIZER_PATH` to point to it): /home/bbrk24/swift/swift-5.9-RELEASE-ubuntu22.04/usr/bin/lldb(+0x22923)[0x564ff284c923] /home/bbrk24/swift/swift-5.9-RELEASE-ubuntu22.04/usr/bin/lldb(+0x20cbe)[0x564ff284acbe] /home/bbrk24/swift/swift-5.9-RELEASE-ubuntu22.04/usr/bin/lldb(+0x22f5a)[0x564ff284cf5a] /lib/x86_64-linux-gnu/libc.so.6(+0x42520)[0x7faf277a0520] /home/bbrk24/swift/swift-5.9-RELEASE-ubuntu22.04/usr/bin/../lib/../lib/swift/linux/libswiftCore.so(+0x3ef004)[0x7faf274e1004] /home/bbrk24/swift/swift-5.9-RELEASE-ubuntu22.04/usr/bin/../lib/../lib/swift/linux/libswiftCore.so(+0x416e96)[0x7faf27508e96] /home/bbrk24/swift/swift-5.9-RELEASE-ubuntu22.04/usr/bin/../lib/../lib/swift/linux/libswiftCore.so(swift_getWitnessTable+0x1393)[0x7faf275006b3] /home/bbrk24/swift/swift-5.9-RELEASE-ubuntu22.04/usr/bin/../lib/liblldb.so.13git(+0x19aa84a)[0x7faf296b984a]

💣 Program crashed: Bad pointer dereference at 0x0000000000000000

Thread 22 "gger.io-handler" crashed:

0 0x00007faf274e1004

Segmentation fault

</details>

[asl]

Please report issues with Apple-provided things to Apple bugtracker.

[bbrk24]

I almost submitted this to apple/swift, but then I saw that the stack dump specifically requested I put it here instead. Is it possible to move the issue?

[jryans]

IIRC, issues can only be transferred between repos on the same org, so this one probably needs to be refiled manually.

Apple should consider changing the stack trace issue URL for their binaries… Perhaps another issue that would be good to file.