Merge pull request #68140 from apple/egorzhdan/inherited-pointee-test

[cxx-interop] Add tests for `.pointee` property access on derived type

Author: egorzhdan

test/Interop/Cxx/operators/Inputs/member-inline.h

@@ -414,4 +414,8 @@ struct AmbiguousOperatorStar2 {
   const int &&operator*() const && { return static_cast<const int &&>(value); }
 };
 
+struct DerivedFromConstIterator : public ConstIterator {};
+
+struct DerivedFromConstIteratorPrivately : private ConstIterator {};
+
 #endif

test/Interop/Cxx/operators/member-inline-typechecker.swift

@@ -67,3 +67,6 @@ let voidReturnType = HasPreIncrementOperatorWithVoidReturnType()
 let voidReturnTypeResult: HasPreIncrementOperatorWithVoidReturnType = voidReturnType.successor()
 
 let immortalIncrement = myCounter.successor() // expected-error {{value of type 'ImmortalCounter' has no member 'successor'}}
+
+let derivedConstIter = DerivedFromConstIteratorPrivately()
+derivedConstIter.pointee // expected-error {{value of type 'DerivedFromConstIteratorPrivately' has no member 'pointee'}}

test/Interop/Cxx/operators/member-inline.swift

@@ -372,4 +372,10 @@ OperatorsTestSuite.test("AmbiguousOperatorStar2.pointee") {
   expectEqual(678, res)
 }
 
+OperatorsTestSuite.test("DerivedFromConstIterator.pointee") {
+  let stars = DerivedFromConstIterator()
+  let res = stars.pointee
+  expectEqual(234, res)
+}
+
 runAllTests()