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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.
52 lines
1.7 KiB
Swift
52 lines
1.7 KiB
Swift
// RUN: %empty-directory(%t)
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// RUN: %target-build-swift -lswiftSwiftReflectionTest %s -o %t/reflect_UInt8
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// RUN: %target-codesign %t/reflect_UInt8
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// RUN: %target-run %target-swift-reflection-test %t/reflect_UInt8 | %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: UInt8
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init(t: UInt8) {
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self.t = t
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}
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}
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var obj = TestClass(t: 123)
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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_UInt8.TestClass)
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// CHECK-64: Type info:
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// CHECK-64: (class_instance size=17 alignment=1 stride=17 num_extra_inhabitants=0 bitwise_takable=1
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// CHECK-64: (field name=t offset=16
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// CHECK-64: (struct size=1 alignment=1 stride=1 num_extra_inhabitants=0 bitwise_takable=1
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// CHECK-64: (field name=_value offset=0
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// CHECK-64: (builtin size=1 alignment=1 stride=1 num_extra_inhabitants=0 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_UInt8.TestClass)
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// CHECK-32: Type info:
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// CHECK-32: (class_instance size=9 alignment=1 stride=9 num_extra_inhabitants=0 bitwise_takable=1
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// CHECK-32: (field name=t offset=8
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// CHECK-32: (struct size=1 alignment=1 stride=1 num_extra_inhabitants=0 bitwise_takable=1
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// CHECK-32: (field name=_value offset=0
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// CHECK-32: (builtin size=1 alignment=1 stride=1 num_extra_inhabitants=0 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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