// {"kind":"typecheck","signature":"swift::Parser::parseList(swift::tok, swift::SourceLoc, swift::SourceLoc&, bool, swift::DiagRef, llvm::function_ref)","signatureAssert":"Assertion failed: (Status.isErrorOrHasCompletion() && \"no progress without error\"), function parseListItem"} // RUN: not --crash %target-swift-frontend -typecheck %s @attached(conformances: ,