swiftlang/swift

Bad diagnostic for `any P!`

Open

#72.662 aperta il 28 mar 2024

Vedi su GitHub
 (6 commenti) (0 reazioni) (2 assegnatari)Swift (10.719 fork)batch import
TypeResolverbugcompilerdiagnostics qualityexistentialsgood first issueimplicitly unwrapped optionalsswift 6.0type checkertypesunexpected behavior

Metriche repository

Star
 (69.989 star)
Metriche merge PR
 (Merge medio 7g 6h) (556 PR mergiate in 30 g)

Descrizione

Description

No response

Reproduction

protocol P {}

// error: using '!' is not allowed here; perhaps '?' was intended? [implicitly_unwrapped_optional_in_illegal_position]
// error: optional 'any' type must be written '(any P2)?' [incorrect_optional_any]
let _: any P!

Expected behavior

A single error, optional 'any' type must be written '(any P)!', as in the case of let _: any P?.

Environment

Swift version 6.0-dev (LLVM 48dc0c6fa01ce9e, Swift 19fbe5b33d423d1) Target: x86_64-apple-macosx14.0

Additional information

This https://github.com/apple/swift/labels/good%20first%20issue will suit an experienced Swift user.

Guida contributor