I have similar crashes with Xcode each time I try to enable SwiftUI preview.
Yes, I opened an issue (FB11976483)
I just don't get what wrong.
I see that Xcode just call abort() and this in stack trace of crash time: [IDEAssertionHandler handleFailureInMethod:object:fileName:lineNumber:assertionSignature:messageFormat:arguments:]
Might be related to Swift driver (swift-driver [88560]) that also output a crash report
SylvainGamel
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