class SomeValue {
    @SomeA var some: Int = 100
}


@propertyWrapper
struct SomeA<T> {
    var wrappedValue: T
    let closure: (T) -> (T)

    init(initialValue: T, closure: @escaping (T) -> (T) = { $0 }) { // problem with closure argument default value
        self.wrappedValue = initialValue
        self.closure = closure
    }
}

SIL verification failed: return value type does not match return type of function: functionResultType == instResultType

0  swift                    0x000000010c42e9b5 llvm::sys::PrintStackTrace(llvm::raw_ostream&) + 37
1  swift                    0x000000010c42dca5 llvm::sys::RunSignalHandlers() + 85
2  swift                    0x000000010c42ef98 SignalHandler(int) + 264
3  libsystem_platform.dylib 0x00007fff65206b5d _sigtramp + 29
4  libsystem_platform.dylib 0x00007ffa23e92970 _sigtramp + 3200826928
5  libsystem_c.dylib        0x00007fff650c06a6 abort + 127
6  swift                    0x0000000109408df8 (anonymous namespace)::SILVerifier::_require(bool, llvm::Twine const&, std::__1::function<void ()> const&) + 616
7  swift                    0x000000010941c21c swift::SILInstructionVisitor<(anonymous namespace)::SILVerifier, void>::visit(swift::SILInstruction*) + 67196
8  swift                    0x000000010940a92c (anonymous namespace)::SILVerifier::visitSILBasicBlock(swift::SILBasicBlock*) + 1484
9  swift                    0x00000001094055c7 swift::SILFunction::verify(bool) const + 7303
10 swift                    0x0000000108eb8fcd swift::Lowering::SILGenModule::postEmitFunction(swift::SILDeclRef, swift::SILFunction*) + 205
11 swift                    0x0000000108ec19f6 swift::Lowering::SILGenModule::emitStoredPropertyInitialization(swift::PatternBindingDecl*, unsigned int)::$_6::operator()(swift::SILFunction*) const + 422
12 swift                    0x0000000108ebb808 swift::Lowering::SILGenModule::emitStoredPropertyInitialization(swift::PatternBindingDecl*, unsigned int) + 536
13 swift                    0x0000000108f8b16d (anonymous namespace)::SILGenType::emitType() + 381
14 swift                    0x0000000108f8afe9 swift::Lowering::SILGenModule::visitNominalTypeDecl(swift::NominalTypeDecl*) + 25
15 swift                    0x0000000108ebdba6 swift::Lowering::SILGenModule::emitSourceFile(swift::SourceFile*) + 822
16 swift                    0x0000000108ebea05 swift::SILModule::constructSIL(swift::ModuleDecl*, swift::SILOptions&, swift::FileUnit*) + 293
17 swift                    0x0000000108ebef26 swift::performSILGeneration(swift::FileUnit&, swift::SILOptions&) + 38
18 swift                    0x0000000108be454f performCompile(swift::CompilerInstance&, swift::CompilerInvocation&, llvm::ArrayRef<char const*>, int&, swift::FrontendObserver*, swift::UnifiedStatsReporter*) + 8255
19 swift                    0x0000000108be15ea swift::performFrontend(llvm::ArrayRef<char const*>, char const*, void*, swift::FrontendObserver*) + 3002
20 swift                    0x0000000108b8a1b8 main + 696
21 libdyld.dylib            0x00007fff6501b3d5 start + 1
22 libdyld.dylib            0x000000000000006d start + 2600357017
// code placeholder