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[SR-15916] Not implemented: @MainActor-isolated default arguments for @MainActor-isolated functions #58177

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groue opened this issue Feb 26, 2022 · 1 comment

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@groue
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groue commented Feb 26, 2022

Previous ID SR-15916
Radar None
Original Reporter @groue
Type Bug
Environment

Xcode 13.3 beta 3 (13E5104i)

Additional Detail from JIRA
Votes 2
Component/s Compiler
Labels Bug
Assignee None
Priority Medium

md5: 618b69843e92ff0edf9587c87894767b

Issue Description:

Hello,

The following snippet does not compile:

@MainActor class Foo { }

// error: call to main actor-isolated initializer 'init()' in a synchronous nonisolated context
// @MainActor func f(foo: Foo = Foo()) { }
//                               ^
// note: calls to initializer 'init()' from outside of its actor context are implicitly asynchronous
// @MainActor class Foo {
//                  ^
@MainActor func f(foo: Foo = Foo()) { }

It should compile, since everything in the declaration of the f function is MainActor-isolated.

@groue
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groue commented Feb 27, 2022

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