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Bitwise takability is now part of the layout of a type, because non-bitwise takable types are never stored inline in an existential or resilient global's buffer, even if they would fit. The basic rule is that weak references, unknown-refcounted unowned references, and aggregates that contain them, are not bitwise takable, whereas everything else is bitwise takable. Also, since the bitwise takable for an unowned reference depends on the reference counting style, we have to record the superclass of a protocol, if any, to correctly determine the reference counting style of the protocol existential.
63 lines
2.5 KiB
Swift
63 lines
2.5 KiB
Swift
// RUN: %empty-directory(%t)
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// RUN: %target-build-swift -lswiftSwiftReflectionTest %s -o %t/reflect_String
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// RUN: %target-codesign %t/reflect_String
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// RUN: %target-run %target-swift-reflection-test %t/reflect_String | %FileCheck %s --check-prefix=CHECK-%target-ptrsize
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// REQUIRES: objc_interop
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// REQUIRES: executable_test
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import SwiftReflectionTest
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class TestClass {
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var t: String
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init(t: String) {
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self.t = t
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}
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}
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var obj = TestClass(t: "Hello, Reflection!")
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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_String.TestClass)
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// CHECK-64: Type info:
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// CHECK-64-NEXT: (class_instance size=32 alignment=8 stride=32 num_extra_inhabitants=0 bitwise_takable=1
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// CHECK-64-NEXT: (field name=t offset=16
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// CHECK-64-NEXT: (struct size=16 alignment=8 stride=16 num_extra_inhabitants=1 bitwise_takable=1
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// (unstable implementation details omitted)
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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_String.TestClass)
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// CHECK-32: Type info:
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// CHECK-32-NEXT: (class_instance size=20 alignment=4 stride=20 num_extra_inhabitants=0 bitwise_takable=1
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// CHECK-32-NEXT: (field name=t offset=8
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// CHECK-32-NEXT: (struct size=12 alignment=4 stride=12 num_extra_inhabitants=128 bitwise_takable=1
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// CHECK-32-NEXT: (field name=_guts offset=0
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// CHECK-32-NEXT: (struct size=12 alignment=4 stride=12 num_extra_inhabitants=128 bitwise_takable=1
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// CHECK-32-NEXT: (field name=_object offset=0
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// CHECK-32-NEXT: (struct size=12 alignment=4 stride=12 num_extra_inhabitants=128 bitwise_takable=1
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// (unstable implementation details omitted)
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// CHECK-32: (field name=_variant offset=4
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// CHECK-32-NEXT: (multi_payload_enum size=5 alignment=4 stride=8 num_extra_inhabitants=0 bitwise_takable=1
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// (unstable implementation details omitted)
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// CHECK-32: (field name=_discriminator offset=9
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// CHECK-32-NEXT: (builtin size=1 alignment=1 stride=1 num_extra_inhabitants=128 bitwise_takable=1
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// (unstable implementation details omitted)
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// CHECK-32: (field name=_flags offset=10
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// CHECK-32-NEXT: (struct size=2 alignment=2 stride=2 num_extra_inhabitants=0 bitwise_takable=1
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// (unstable implementation details omitted)
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doneReflecting()
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// CHECK-64: Done.
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// CHECK-32: Done.
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