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https://github.com/apple/swift.git
synced 2025-12-14 20:36:38 +01:00
509735ea66
The RemoteMirror library in shipping versions of macOS/iOS/tvOS/watchOS crashes if the compiler emits a BuiltinTypeDescriptor with size zero. Although this is fixed in top-of-tree RemoteMirror, we want binaries built with the new compiler to still be inspectable when run on older OSes. Generate the metadata as an empty struct with no fields when deploying back to these older platforms, which should be functionally equivalent for most purposes. Fixes rdar://problem/57924984.
72 lines
3.1 KiB
Swift
72 lines
3.1 KiB
Swift
// RUN: %empty-directory(%t)
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// RUN: %target-build-swift -lswiftSwiftReflectionTest -I %S/Inputs/EmptyStruct/ %s -o %t/reflect_empty_struct -target x86_64-apple-macosx10.99.0
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// RUN: %target-codesign %t/reflect_empty_struct
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// RUN: %target-run %target-swift-reflection-test %t/reflect_empty_struct | %FileCheck %s --check-prefix=CHECK-%target-ptrsize --dump-input fail
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// REQUIRES: objc_interop
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// REQUIRES: executable_test
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// REQUIRES: OS=macosx
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import SwiftReflectionTest
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import EmptyStruct
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@_alignment(1) struct EmptyStruct { }
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class Class {
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var a = EmptyStruct()
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var b: Any = EmptyStruct()
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var c = EmptyStructC()
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var d: Any = EmptyStructC()
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}
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var obj = Class()
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reflect(object: obj)
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// CHECK-64: Reflecting an object.
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// CHECK-64: Instance pointer in child address space: 0x{{[0-9a-fA-F]+}}
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// CHECK-64: Type reference:
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// CHECK-64: (class reflect_empty_struct.Class)
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// CHECK-64: Type info:
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// CHECK-64: (class_instance size=80 alignment=8 stride=80 num_extra_inhabitants=0 bitwise_takable=1
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// CHECK-64: (field name=a offset=16
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// CHECK-64: (builtin size=0 alignment=1 stride=1 num_extra_inhabitants=0 bitwise_takable=1))
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// CHECK-64: (field name=b offset=16
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// CHECK-64: (opaque_existential size=32 alignment=8 stride=32 num_extra_inhabitants=2147483647 bitwise_takable=1
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// CHECK-64: (field name=metadata offset=24
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// CHECK-64: (builtin size=8 alignment=8 stride=8 num_extra_inhabitants=2147483647 bitwise_takable=1))))
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// CHECK-64: (field name=c offset=48
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// CHECK-64: (builtin size=0 alignment=4 stride=1 num_extra_inhabitants=0 bitwise_takable=1))
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// CHECK-64: (field name=d offset=48
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// CHECK-64: (opaque_existential size=32 alignment=8 stride=32 num_extra_inhabitants=2147483647 bitwise_takable=1
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// CHECK-64: (field name=metadata offset=24
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// CHECK-64: (builtin size=8 alignment=8 stride=8 num_extra_inhabitants=2147483647 bitwise_takable=1)))))
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// CHECK-32: Reflecting an object.
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// CHECK-32: Instance pointer in child address space: 0x{{[0-9a-fA-F]+}}
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// CHECK-32: Type reference:
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// CHECK-32: (class reflect_empty_struct.Class)
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// CHECK-32: Type info:
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// CHECK-32: (class_instance size=40 alignment=4 stride=40 num_extra_inhabitants=0 bitwise_takable=1
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// CHECK-32: (field name=a offset=8
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// CHECK-32: (builtin size=0 alignment=1 stride=1 num_extra_inhabitants=0 bitwise_takable=1))
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// CHECK-32: (field name=b offset=8
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// CHECK-32: (opaque_existential size=16 alignment=4 stride=16 num_extra_inhabitants=4096 bitwise_takable=1
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// CHECK-32: (field name=metadata offset=12
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// CHECK-32: (builtin size=4 alignment=4 stride=4 num_extra_inhabitants=4096 bitwise_takable=1))))
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// CHECK-32: (field name=c offset=24
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// CHECK-32: (builtin size=0 alignment=4 stride=1 num_extra_inhabitants=0 bitwise_takable=1))
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// CHECK-32: (field name=d offset=24
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// CHECK-32: (opaque_existential size=16 alignment=4 stride=16 num_extra_inhabitants=4096 bitwise_takable=1
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// CHECK-32: (field name=metadata offset=12
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// CHECK-32: (builtin size=4 alignment=4 stride=4 num_extra_inhabitants=4096 bitwise_takable=1)))))
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doneReflecting()
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// CHECK-64: Done.
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// CHECK-32: Done.
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