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 | 

贡献者指南

技术栈

swift

领域

developer experiencetooling

议题类型

bug

难度面向新贡献者的预计实现难度，1 表示很小改动，5 表示专家级工作。

3

预计时间有经验贡献者完成调查、实现、测试并准备 pull request 的粗略时间范围。

1-3 hours

活动状态议题当前的可参与程度：新鲜、活跃、陈旧、阻塞或等待维护者输入。

blocked

清晰度议题是否清楚说明期望改动、验收标准和下一步。

clear

前置要求

understanding of Swift compiler diagnostics

新手友好度1-100 的估计分数，表示该议题对首次贡献者的友好程度。

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.