自分も以前引っかかって、ここら辺がおそらく関わってました。 caseの同名は基本信用できないです... https://github.com/apple/swift/issues/52479 https://github.com/apple/swift/issues/60376 https://github.com/apple/swift/issues/53556 (edited)

[SR-10077] Switching over duplicate enum case names won't compile ·...

Previous ID SR-10077 Radar None Original Reporter xavier.lowmiller (JIRA User) Type Bug Additional Detail from JIRA Votes 12 Component/s Compiler Labels Bug Assignee @slavapestov Priority Medium md...

Switching over enum with two identically named cases but different ...

Describe the bug The following code produces warnings and crashes at runtime: enum Bar { case foo(Int) case foo(Int, Int) } func baz(_ bar: Bar) { switch bar { case .foo(let a): print("first c...

[SR-11159] Typechecker crash on overloaded enum case · Issue #53556...

Previous ID SR-11159 Radar rdar://problem/53312911 Original Reporter @Kelvin13 Type Sub-task Environment $ swift --version Swift version 5.1-dev (LLVM 200186e28b, Swift 75a5496) Target: x86_64-unkn...