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293e31658c
One can overload on async vs. non-async, and the constraint solver has a preference rule based on context. Extend that preference rule to witness matching, so we prefer a witness that exactly matches the effects of the requirement to one that has fewer effects. Fixes rdar://84034057.
38 lines
619 B
Swift
38 lines
619 B
Swift
// RUN: %target-typecheck-verify-swift -disable-availability-checking
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// Ensure that a protocol with async requirements can be conformed to by
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// non-async requirements, and that overloading works.
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protocol A {
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func foo()
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func foo() async
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init()
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init() async
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var property: Int { get async }
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func bar() throws
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func bar() async throws
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}
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struct A1: A {
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func foo() { }
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var property: Int = 17
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func bar() { }
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}
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struct A2: A {
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func foo() { }
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func foo() async { }
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init() { }
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init() async { }
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var property: Int { get async { 5 } }
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func bar() throws { }
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func bar() async throws { }
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}
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