Redundant error for missing type annotation in computed property

描述

func foo() {
  var int {}
}

error: computed property must have an explicit type [computed_property_missing_type]
  91 | 
  92 | func foo() {
  93 |   var int {}
     |       `- error: computed property must have an explicit type [computed_property_missing_type]
  94 | }
  95 | 

error: type annotation missing in pattern [cannot_infer_type_for_pattern]
  91 | 
  92 | func foo() {
  93 |   var int {}
     |       `- error: type annotation missing in pattern [cannot_infer_type_for_pattern]
  94 | }
  95 | 

貢獻者指南

技術棧

swift

領域

developer experiencetooling

議題類型

bug

難度面向新貢獻者的預計實作難度，1 表示很小改動，5 表示專家級工作。

3

預計時間有經驗貢獻者完成調查、實作、測試並準備 pull request 的粗略時間範圍。

1-3 hours

活動狀態議題目前的可參與程度：新鮮、活躍、陳舊、阻塞或等待維護者輸入。

blocked

清晰度議題是否清楚說明預期改動、驗收標準和下一步。

clear

前置要求

understanding of Swift compiler diagnostics

新手友善度1-100 的估計分數，表示該議題對首次貢獻者的友善程度。

40

研究方向

Investigate the type checker or diagnostic emission module in the Swift compiler to locate where the two errors ('computed property missing type' and 'cannot infer type for pattern') are emitted. The goal is to suppress the second error when the first is already emitted. Review existing patterns in the codebase for suppressing duplicate diagnostics. Check the issue comments for any additional context or guidance from maintainers.