IRGen: Weak-link references to swift_getExtendedExistentialTypeMetadata() #69459
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tshortli
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Oct 27, 2023
| @@ -0,0 +1,13 @@ | |||
| // RUN: %target-swift-frontend -emit-ir %s -target arm64-apple-macos12 | %FileCheck %s | |||
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Nit: %target-cpu-apple-macos12 would make this test run without building a bunch of modules on x86_64. Even, better %target-swift-abi-5.5-triple and using @available(SwiftStdlib 5.7, *) instead of @available(macOS 13, *) in the body would allow this to run on REQUIRES: VENDOR=apple instead of just macOS
tshortli
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Oct 27, 2023
…ta() Fixes rdar://117530421.
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FranzBusch
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Nov 14, 2023
# Motivation We have reverted the typed HTTP protocol upgrader pieces since adopters were running into a compiler bug (swiftlang/swift#69459) that caused the compiler to emit strong references to `swift_getExtendedExistentialTypeMetadata`. The problem is that `swift_getExtendedExistentialTypeMetadata` is not available on older runtimes before constrained existentials have been introduced. This caused adopters to run into runtime crashes when loading any library compiled with this NIO code. # Modifications This PR reverts the revert and guard all new code in a compiler guard that checks that we are either on non-Darwin platforms or on a new enough Swift compiler that contains the fix. # Result We can offer the typed HTTP upgrade code to our adopters again.
FranzBusch
added a commit
to FranzBusch/swift-nio
that referenced
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Nov 15, 2023
# Motivation We have reverted the typed HTTP protocol upgrader pieces since adopters were running into a compiler bug (swiftlang/swift#69459) that caused the compiler to emit strong references to `swift_getExtendedExistentialTypeMetadata`. The problem is that `swift_getExtendedExistentialTypeMetadata` is not available on older runtimes before constrained existentials have been introduced. This caused adopters to run into runtime crashes when loading any library compiled with this NIO code. # Modifications This PR reverts the revert and guard all new code in a compiler guard that checks that we are either on non-Darwin platforms or on a new enough Swift compiler that contains the fix. # Result We can offer the typed HTTP upgrade code to our adopters again.
FranzBusch
added a commit
to FranzBusch/swift-nio
that referenced
this pull request
Nov 15, 2023
# Motivation We have reverted the typed HTTP protocol upgrader pieces since adopters were running into a compiler bug (swiftlang/swift#69459) that caused the compiler to emit strong references to `swift_getExtendedExistentialTypeMetadata`. The problem is that `swift_getExtendedExistentialTypeMetadata` is not available on older runtimes before constrained existentials have been introduced. This caused adopters to run into runtime crashes when loading any library compiled with this NIO code. # Modifications This PR reverts the revert and guard all new code in a compiler guard that checks that we are either on non-Darwin platforms or on a new enough Swift compiler that contains the fix. # Result We can offer the typed HTTP upgrade code to our adopters again.
FranzBusch
added a commit
to FranzBusch/swift-nio
that referenced
this pull request
Nov 15, 2023
# Motivation We have reverted the typed HTTP protocol upgrader pieces since adopters were running into a compiler bug (swiftlang/swift#69459) that caused the compiler to emit strong references to `swift_getExtendedExistentialTypeMetadata`. The problem is that `swift_getExtendedExistentialTypeMetadata` is not available on older runtimes before constrained existentials have been introduced. This caused adopters to run into runtime crashes when loading any library compiled with this NIO code. # Modifications This PR reverts the revert and guard all new code in a compiler guard that checks that we are either on non-Darwin platforms or on a new enough Swift compiler that contains the fix. # Result We can offer the typed HTTP upgrade code to our adopters again.
FranzBusch
added a commit
to apple/swift-nio
that referenced
this pull request
Nov 15, 2023
* Revert "Back out new typed HTTP protocol upgrader (#2579)" # Motivation We have reverted the typed HTTP protocol upgrader pieces since adopters were running into a compiler bug (swiftlang/swift#69459) that caused the compiler to emit strong references to `swift_getExtendedExistentialTypeMetadata`. The problem is that `swift_getExtendedExistentialTypeMetadata` is not available on older runtimes before constrained existentials have been introduced. This caused adopters to run into runtime crashes when loading any library compiled with this NIO code. # Modifications This PR reverts the revert and guard all new code in a compiler guard that checks that we are either on non-Darwin platforms or on a new enough Swift compiler that contains the fix. # Result We can offer the typed HTTP upgrade code to our adopters again. * Add compiler guards
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Fixes rdar://117530421 and (probably) #64657.