编译时使用Swift项目的Xcode 6.0.1分段错误

当我尝试编译我的Swift项目时出现了分段错误。编译时使用Swift项目的Xcode 6.0.1分段错误

这里是我的代码的简化版本，它导致错误：

enum PluginType 
{ 
    case PluginC 
    case PluginD 
} 

class Plugin 
{ 
    var pluginType : PluginType 
    var setter : Void -> Void 
    var unsetter : Void -> Void 

    init(pluginType : PluginType, setter : Void -> Void, unsetter : Void -> Void) 
    { 
     self.pluginType = pluginType 
     self.setter = setter 
     self.unsetter = unsetter 
    } 
} 

@objc protocol BProtocol 
{ 
    func getPlugins() -> [Plugin] 
} 

class B : BProtocol 
{ 
    var a : AProtocol? 

    func getPlugins() -> [Plugin] 
    { 
     return [Plugin(pluginType : .PluginC, setter : a!.setPluginC, unsetter : a!.unsetPluginC), 
      Plugin(pluginType : .PluginD, setter : a!.setPluginD, unsetter: a!.unsetPluginD)] 
    } 
} 

@objc protocol AProtocol 
{ 
    func setPluginC() 
    func unsetPluginC() 
    func setPluginD() 
    func unsetPluginD() 
} 

class A : AProtocol 
{ 
    var b : BProtocol? 

    func setPluginC() 
    { 

    } 

    func unsetPluginC() 
    { 

    } 

    func setPluginD() 
    { 

    } 

    func unsetPluginD() 
    { 

    } 
}

问题都来自于这个方法：

func getPlugins() -> [Plugin] 
    { 
     return [Plugin(pluginType : .PluginC, setter : a!.setPluginC, unsetter : a!.unsetPluginC), 
      Plugin(pluginType : .PluginD, setter : a!.setPluginD, unsetter: a!.unsetPluginD)] 
    }

问题是由setter和unsetter我初始化引起。

这里有Xcode中错误：

0 swift 0x000000010456a028 llvm::sys::PrintStackTrace(__sFILE*) + 40 1 swift
0x000000010456a514 SignalHandler(int) + 452 2 libsystem_platform.dylib 0x00007fff9596f5aa _sigtramp + 26 3 libsystem_platform.dylib 0x000007f83527198b _sigtramp + 2677023739 4 swift 0x00000001049290df swift::AbstractStorageDecl::hasObjCGetterAndSetter() const + 31 5 swift 0x0000000104929205 swift::AbstractStorageDecl::requiresObjCGetterAndSetter() const + 69 6 swift 0x00000001039ff3f4 swift::Lowering::SILGenFunction::emitGetAccessor(swift::SILLocation, swift::AbstractStorageDecl*, llvm::ArrayRef, swift::Lowering::RValueSource&&, bool, swift::Lowering::RValue&&, swift::Lowering::SGFContext) + 68 7 swift
0x0000000103a15ca4 swift::Lowering::SILGenFunction::emitRValueForPropertyLoad(swift::SILLocation, swift::Lowering::ManagedValue, bool, swift::VarDecl*, llvm::ArrayRef, bool, swift::Type, swift::Lowering::SGFContext) + 1284 8 swift
0x0000000103a2a012 swift::ASTVisitor<(anonymous namespace)::RValueEmitter, swift::Lowering::RValue, void, void, void, void, void, swift::Lowering::SGFContext>::visit(swift::Expr*, swift::Lowering::SGFContext) + 28402 9 swift
0x0000000103a2b6ed swift::Lowering::SILGenFunction::emitRValueAsSingleValue(swift::Expr*, swift::Lowering::SGFContext) + 45 10 swift
0x00000001039f3720 swift::Lowering::RValueSource::getAsSingleValue(swift::Lowering::SILGenFunction&, swift::Lowering::SGFContext) && + 176 11 swift
0x0000000103a44154 swift::Lowering::RValueSource::forwardInto(swift::Lowering::SILGenFunction&, swift::Lowering::AbstractionPattern, swift::Lowering::Initialization*, swift::Lowering::TypeLowering const&) && + 260 12 swift
0x0000000103a4400e swift::Lowering::RValueSource::materialize(swift::Lowering::SILGenFunction&, swift::Lowering::AbstractionPattern, swift::SILType) && + 334 13 swift 0x0000000103a340fc swift::Lowering::SILGenFunction::emitInjectOptionalValueInto(swift::SILLocation, swift::Lowering::RValueSource&&, swift::SILValue, swift::Lowering::TypeLowering const&) + 268 14 swift
0x0000000103a2b1fb swift::ASTVisitor<(anonymous namespace)::RValueEmitter, swift::Lowering::RValue, void, void, void, void, void, swift::Lowering::SGFContext>::visit(swift::Expr*, swift::Lowering::SGFContext) + 32987 15 swift
0x0000000103a2a325 swift::ASTVisitor<(anonymous namespace)::RValueEmitter, swift::Lowering::RValue, void, void, void, void, void, swift::Lowering::SGFContext>::visit(swift::Expr*, swift::Lowering::SGFContext) + 29189 16 swift
0x0000000103a2b63f swift::Lowering::SILGenFunction::emitIgnoredExpr(swift::Expr*) + 191 17 swift 0x0000000103a483f9 swift::Lowering::SILGenFunction::visitBraceStmt(swift::BraceStmt*) + 297 18 swift 0x0000000103a4b2d4 swift::ASTVisitor::visit(swift::Stmt*) + 148 19 swift
0x0000000103a188c3 swift::Lowering::SILGenFunction::emitFunction(swift::FuncDecl*) + 243 20 swift 0x00000001039f8646 swift::Lowering::SILGenModule::emitFunction(swift::FuncDecl*) + 230 21 swift 0x0000000103a12763 swift::ASTVisitor::visit(swift::Decl*) + 355 22 swift
0x0000000103a1112b SILGenType::emitType() + 203 23 swift
0x0000000103a0c0fe swift::Lowering::SILGenModule::visitNominalTypeDecl(swift::NominalTypeDecl*) + 30 24 swift 0x00000001039fa5cb swift::Lowering::SILGenModule::emitSourceFile(swift::SourceFile*, unsigned int) + 411 25 swift 0x00000001039fa88f swift::SILModule::constructSIL(swift::Module*, swift::SourceFile*, swift::Optional) + 335 26 swift
0x00000001039fa9d8 swift::performSILGeneration(swift::SourceFile&, swift::Optional) + 72 27 swift
0x00000001038dfda9 frontend_main(llvm::ArrayRef, char const*, void*) + 3353 28 swift 0x00000001038dd94d main + 1677 29 libdyld.dylib 0x00007fff99b5c5fd start + 1 30 libdyld.dylib 0x000000000000015a start + 1716140894

我正在寻找一个解决办法，以避免“段错误”的编译器。

有什么建议吗？

谢谢！

来源

2014-09-26 Jean Lebrument

最后，我找到了一个解决办法：

func getPlugins() -> [Plugin] 
{ 
    return [Plugin(pluginType : .PluginC, setter : { a!.setPluginC() }, unsetter : { a!.unsetPluginC() }), 
     Plugin(pluginType : .PluginD, setter : { a!.setPluginD() }, unsetter: { a!.unsetPluginD() })] 
}

这和Xcode 6.1

成功的作品

来源

2014-10-02 14:07:23

编译时使用Swift项目的Xcode 6.0.1分段错误

回答

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