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0301e03cc3
When a protocol witness thunk is formed to a serialised protocol containing an `async` function, the async function pointer to the conformance needs to be made public due to a SIL Verifier check failure (reference to a non-fragile function from within a public fragile function). Add a stop-gap solution of rolling an extra emission for a private symbol as a public symbol to avoid the error (the underlying issue has been open for ~6y and counting as of this commit). This was identified by swift-package-manager (#64900). Thanks to @DougGregor and @aschwaighofer for the discussion on this!
24 lines
533 B
Swift
24 lines
533 B
Swift
// RUN: %empty-directory(%t)
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// RUN: %target-swift-frontend -disable-availability-checking -emit-module -emit-module-path %t/P.swiftmodule -parse-as-library -module-name P -DP %s
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// RUN: %target-swift-frontend -disable-availability-checking -I%t -parse-as-library -module-name Q -c %s -o /dev/null -validate-tbd-against-ir=missing
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// REQUIRES: concurrency
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#if P
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public protocol P {
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func f() async
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}
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#else
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import P
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protocol Q: P { }
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extension Q {
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public func f() async { }
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}
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public struct S: Q {
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public init() { }
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}
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#endif
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