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[cxx-interop] Test initializing foreign reference type when passed by parameter #84085

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Merged
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Sep 3, 2025
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[cxx-interop] Test initializing foreign reference type when passed by parameter #84085

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4 changes: 4 additions & 0 deletions test/Interop/Cxx/foreign-reference/Inputs/pass-as-parameter.h
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Original file line number Diff line number Diff line change
Expand Up @@ -14,3 +14,7 @@ inline int extractValueFromRefToPtr(IntBox *&b) { return b->value; }
inline int extractValueFromRefToConstPtr(IntBox const *&b) { return b->value; }
inline int extractValueFromConstRefToPtr(IntBox *const &b) { return b->value; }
inline int extractValueFromConstRefToConstPtr(IntBox const *const &b) { return b->value; }

inline void initializeByPtr(int value, IntBox **b) {
*b = IntBox::create(value);
}
2 changes: 2 additions & 0 deletions test/Interop/Cxx/foreign-reference/pass-as-parameter-module-interface.swift
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Expand Up @@ -7,3 +7,5 @@
// CHECK: func extractValueFromRefToConstPtr(_ b: inout IntBox!) -> Int32
// CHECK: func extractValueFromConstRefToPtr(_ b: IntBox!) -> Int32
// CHECK: func extractValueFromConstRefToConstPtr(_ b: IntBox!) -> Int32

// CHECK: func initializeByPtr(_ value: Int32, _ b: UnsafeMutablePointer<IntBox?>!)
6 changes: 6 additions & 0 deletions test/Interop/Cxx/foreign-reference/pass-as-parameter.swift
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Expand Up @@ -53,4 +53,10 @@ PassAsParameterTestSuite.test("pass as const reference to const pointer") {
expectEqual(aValue, 789)
}

PassAsParameterTestSuite.test("initialize by pointer") {
var a: IntBox!
initializeByPtr(987, &a)
expectEqual(a.value, 987)
}

runAllTests()