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averello/swift-mirror

mirror of https://github.com/apple/swift.git synced 2025-12-14 20:36:38 +01:00

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Pavel Yaskevich 10c794e568 [CSDiagnostics] Produce a diagnostic for patterns with extraneous elements

Extend `ExtraneousArgumentsFailure` to handle enum element
pattern mismatches.

Resolves: rdar://123466496

2024-02-26 14:30:29 -08:00

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Swift

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 // RUN: %target-typecheck-verify-swift
 // rdar://107724970 – Make sure we don't crash.
 enum E {
   case e(Int)
 }
 func foo(_ x: E) {
   // https://github.com/apple/swift/issues/65062
   let fn = {
     switch x {
     case E.e(_, _):
       // expected-error@-1 {{tuple pattern has the wrong length for tuple type 'Int'}}
       break
     }
   }
 }