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998591e9f9
Zero sized fields are messing up the offset calculations when we import C++ fields to Swift. We assume that the size of the field is determined by the type of the field. This is not true for fields marked with no_unique_address. Those fields can have 0 size while the sizeof(decltype(field)) is still 1. rdar://143907490
28 lines
692 B
Swift
28 lines
692 B
Swift
// RUN: %target-run-simple-swift(-I %S/Inputs/ -Xfrontend -enable-experimental-cxx-interop -Xcc -std=c++20)
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//
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// REQUIRES: executable_test
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import StdlibUnittest
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import MemberVariables
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var FieldsTestSuite = TestSuite("Generating code with zero sized fields")
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func takeTypeWithZeroSizedMember(_ x: HasZeroSizedField) {}
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FieldsTestSuite.test("Zero sized field") {
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var s = HasZeroSizedField()
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s.a = 5
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s.set_c(7)
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takeTypeWithZeroSizedMember(s)
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let s2 = s
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let myInt : Empty.type = 6
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expectEqual(s.a, 5)
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expectEqual(s.a, s.get_a())
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expectEqual(s2.c, 7)
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expectEqual(s2.c, s2.get_c())
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expectEqual(takesZeroSizedInCpp(s2), 5)
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expectEqual(s.b.getNum(), 42)
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}
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runAllTests()
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