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[SR-11903] SE-0192 - Frozen enums imported from ObjC can still be initted with invalid rawValues #54320

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swift-ci opened this issue Dec 5, 2019 · 1 comment
Open

[SR-11903] SE-0192 - Frozen enums imported from ObjC can still be initted with invalid rawValues #54320

swift-ci opened this issue Dec 5, 2019 · 1 comment
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bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. compiler The Swift compiler in itself

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@swift-ci
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swift-ci commented Dec 5, 2019

Previous ID SR-11903
Radar rdar://problem/57711776
Original Reporter ultramiraculous (JIRA User)
Type Bug
Additional Detail from JIRA
Votes 0
Component/s Compiler
Labels Bug
Assignee None
Priority Medium

md5: 99c656495cc5a924a9caa22546e8d9d3

Issue Description:

SR-1419 / SR-8894 documented this previously and were closed as intended behavior until SE-0192 was done.

In the section on C enums in SE-0192 it's mentioned that adding the `frozen` concept to the language would enable Swift to drop the `init(rawValue🙂` constructor behavior on imported enums that allows invalid values:

Apart from the effect on switches, a frozen C enum's init(rawValue:) will also enforce that the case is one of those known at compile time. Imported non-frozen enums will continue to perform no checking on the raw value.
@beccadax
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beccadax commented Dec 6, 2019

@swift-ci create

@swift-ci swift-ci transferred this issue from apple/swift-issues Apr 25, 2022
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bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. compiler The Swift compiler in itself
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@beccadax @swift-ci