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[SR-11446] Switch matches enum case with incorrect number (and spelling) of argument labels. #53847

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swift-ci opened this issue Sep 10, 2019 · 3 comments
Open

[SR-11446] Switch matches enum case with incorrect number (and spelling) of argument labels. #53847

swift-ci opened this issue Sep 10, 2019 · 3 comments
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@CodaFi
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bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. compiler The Swift compiler in itself diagnostics QoI Bug: Diagnostics Quality of Implementation

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@swift-ci
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Previous ID SR-11446
Radar None
Original Reporter Lance (JIRA User)
Type Bug
Additional Detail from JIRA
Votes 0
Component/s Compiler
Labels Bug, DiagnosticsQoI
Assignee @CodaFi
Priority Medium

md5: 268975683901af37469c719a6fca7ccb

Issue Description:

Consider the following code:

enum Foo {    
    case bar(Int) 
}
let f = Foo.bar(42)
switch f { 
case .bar(hello:world:): // what's going on here?    
    break 
}

I would expect this to be a compiler error since the `bar` case only has one associated value, but in our pattern, we name two.

It's also a bit strange that no underscores or variable names are required.
@belkadan
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Uh, yikes. Hopefully fixed by AndrewLitteken (JIRA User)'s work. cc also CodaFi (JIRA User)

@swift-ci
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Comment by Andrew Litteken (JIRA)

It looks like this case is covered by my pull request

@swift-ci
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Comment by Lance Parker (JIRA)

Cool!

@swift-ci swift-ci transferred this issue from apple/swift-issues Apr 25, 2022
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@CodaFi CodaFi

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bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. compiler The Swift compiler in itself diagnostics QoI Bug: Diagnostics Quality of Implementation
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@belkadan @swift-ci