[SR-13009] PAT constraint in superclass initializer causes Segmentation fault: 11 in generic subclass #55454
Comments
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The code above is missing a few closing braces, but regardless it doesn't compile: Although once I remove the unused generic parameter, the code compiles fine on master, so I think the crash is fixed. |
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Comment by Daniel Hall (JIRA) @theblixguy Oh no! Sorry about the non-compiling example — I had some copy-paste / Jira formatting issues. I updated the sample code above and pasted it into an Xcode 11.5 project to verify that it reproduces the Segmentation fault 11 error |
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No worries! Could you verify using a development snapshot from swift.org? |
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Comment by Daniel Hall (JIRA) Nice! No Segmentation fault using the latest development snapshot. My original use case that I condensed to a smaller reproducible example for this bug also also compiles successfully with the latest development snapshot. Looks like it must have already been fixed then �� |
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I can confirm this is fixed in a 5.3 development snapshot. |
AnthonyLatsis
added
the
crash
Environment
Xcode 11.5 running on macOS Catalina.
Current version of Swift Playgrounds on iPad Pro
Additional Detail from JIRA
md5: ea8a56c0f958568461149465ff10c821
Issue Description:
import Combine{{ }}class Test<Value> {{{ @published private var value: Value}}
{{ init<InputPublisher: Publisher>(initialValue: Value, inputPublisher: InputPublisher) { }}
{{ value = initialValue}}
}// This compilesclass OK: Test<String> {{{ init() {}}
{{ super.init(initialValue: "", inputPublisher: ["a", "b", "c"].publisher)}}
}
// Segmentation fault: 11class UhOh<T>: Test<String> {{{ init() {}}
{{ super.init(initialValue: "", inputPublisher: ["a", "b", "c"].publisher)}}
}
Removing the generic component from the subclass makes it compile, as noted.
Changing the superclass initializer to take an
AnyPublisher<Value, Never>parameter instead of a constrainedInputPublisher: Publisherparameter also makes it compile.The text was updated successfully, but these errors were encountered: