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[SR-11067] Property Wrappers and private breaks #53459

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swift-ci opened this issue Jul 4, 2019 · 2 comments
Open

[SR-11067] Property Wrappers and private breaks #53459

swift-ci opened this issue Jul 4, 2019 · 2 comments
Labels
bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. compiler The Swift compiler in itself crash Bug: A crash, i.e., an abnormal termination of software property wrappers Feature: property wrappers

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@swift-ci
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swift-ci commented Jul 4, 2019

Previous ID SR-11067
Radar None
Original Reporter chriseidhof (JIRA User)
Type Bug
Additional Detail from JIRA
Votes 0
Component/s Compiler
Labels Bug, CompilerCrash, PropertyWrappers
Assignee None
Priority Medium

md5: 8bbcb160b8cab5f0d8c7b0f7cbaffb3d

Issue Description:

Here's a minimal example that segfaults:

@propertyWrapper class KeychainItem {
    var wrappedValue: String? = nil
}

struct ContentView : View {
    @KeychainItem private var item: String?
    var body: some View {
        Text("Hello World")
    }
}

Removing the private modifier makes the code compile again.

BTW, the diagnostics for the segfault didn't point to this location. It took quite some time to find the culprit.
@swift-ci
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swift-ci commented Jul 4, 2019

Comment by Chris Eidhof (JIRA)

Here's a similar bug, without the private modifier (but using a class):

@propertyWrapper class KeychainItem {
    var wrappedValue: String? = nil
}

class Session {
    @KeychainItem var sid: String?
}

struct ContentView : View {
    let session = Session()
    var body: some View {
        Text("Hello World")
    }
}

If we change Session to be a struct it compiles fine...

@belkadan
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belkadan commented Jul 6, 2019

The first one's fixed in master and the 5.1 branch. The second one doesn't seem to be crashing for me?

@swift-ci swift-ci transferred this issue from apple/swift-issues Apr 25, 2022
@AnthonyLatsis AnthonyLatsis added the crash Bug: A crash, i.e., an abnormal termination of software label Dec 12, 2022
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Labels
bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. compiler The Swift compiler in itself crash Bug: A crash, i.e., an abnormal termination of software property wrappers Feature: property wrappers
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@belkadan @swift-ci @AnthonyLatsis