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We started using clang to emit the _OBJC_PROTOCOL_ definition. But we would use a different name for the proto_list definition than clang. "OBJC_LABEL_PROTOCOL$" (objc) |--> OBJC_PROTOCOL "\01l_OBJC_LABEL_PROTOCOL$_" (swift) |--> OBJC_PROTOCOL If an Objective C object also emitted the same protocol definition you could end up in a situation where both clang's and swift's proto_list definitions point to the same protocol definition. Older linkers don't like that. rdar://108505376
23 lines
1.1 KiB
Swift
23 lines
1.1 KiB
Swift
// RUN: %target-swift-frontend(mock-sdk: %clang-importer-sdk) -disable-availability-checking -target %target-swift-abi-5.8-triple -import-objc-header %S/Inputs/Delegate.h %s -emit-ir -o - | %FileCheck %s -DALIGNMENT=%target-alignment --check-prefix=CHECK-%is-darwin
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// REQUIRES: concurrency
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// REQUIRES: objc_interop
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let anyObject: AnyObject = (MyAsyncProtocol.self as AnyObject) // or something like this
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// rdar://76192003
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// Make sure we don't emit 2 copies of methods, due to a completion-handler
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// version and another due to an async based version.
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// CHECK-isNotDarwin-LABEL: @_PROTOCOL_INSTANCE_METHODS_MyAsyncProtocol = weak hidden constant
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// CHECK-isNotDarwin-SAME: selector_data(myAsyncMethod:)
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// CHECK-isNotDarwin-NOT: selector_data(myAsyncMethod:)
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// CHECK-isNotDarwin-SAME: align [[ALIGNMENT]]
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// CHECK-isDarwin: @OBJC_METH_VAR_NAME_ = private unnamed_addr constant [15 x i8] c"myAsyncMethod:\00"
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// CHECK-isDarwin: @"_OBJC_$_PROTOCOL_INSTANCE_METHODS_MyAsyncProtocol" =
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// CHECK-isDarwin-SAME: [1 x %struct._objc_method]
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// CHECK-isDarwin-SAME: @OBJC_METH_VAR_NAME_
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// CHECK-isDarwin-SAME: align [[ALIGNMENT]]
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