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c3a7203221
Explanation: There was an inconsistency between non-const and const FRT pointers. The former used Direct_Unowned the latter used Indirect calling convention. We want to use Direct_Unowned for both cases. The crash was the result of a calling convention mismatch between the SILFunctionType of a Swift closure and the SILFunctionType of the C++ function's formal parameter that is taking a function pointer. The compiler tried to insert a conversion between the two function types that does not exist and caused an assertion in debug compilers and miscompilation in production compilers. Issue: rdar://149398905 Risk: Low, the fix is targeted and we change to a well-tested behavior with non-const FRT pointers. Testing: Regression test added. Original PR: #81070 Reviewer: @j-hui
19 lines
372 B
Swift
19 lines
372 B
Swift
// RUN: %target-run-simple-swift(-I %S/Inputs/ -Xfrontend -cxx-interoperability-mode=default)
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//
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// REQUIRES: executable_test
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import StdlibUnittest
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import Closure
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var ClosureTestSuite = TestSuite("Closure")
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ClosureTestSuite.test("ConvertToFunctionPointer") {
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cfunc2({N in})
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}
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ClosureTestSuite.test("Pass FRT to function pointer") {
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cppGo({N in })
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}
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runAllTests()
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