blocks|key|5658860|text|此错误可能由于多种原因而发生，因此这是一个调试提示。您可能想尝试在命令行中使用xcodebuild。它会给你详细说明哪些文件是罪魁祸首。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|5658861|为此，请打开终端并转到您的项目文件夹。一到那里，就输入|5658862|xcodebuild+-project+YourProject.xcodeproj+-scheme+YourScheme|code-block|syntax|javascript|5658863|或者如果你在工作空间里工作|5658864|xcodebuild+-workspace+YourProject.xcworkspace+-scheme+YourScheme|5658865|您可能会看到大量消息弹出，但在输出的最末尾，您应该看到导致崩溃的特定文件。回到XCode中，进入这些文件，开始使用Swift语法来查看到底发生了什么。在我的例子中，它与setAttributeString函数有关，但我看到其他人对此有异议！然后呢？|5658866|希望这能让你朝着正确的方向前进。|5658867|entityMap^0|13|A|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@$9|X|A|Y|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|Z|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|10|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|11|8|@]|D|@]|E|$]]|$1|O|3|P|5|J|7|12|8|@]|D|@]|E|$K|L]]|$1|Q|3|R|5|6|7|13|8|@]|D|@]|E|$]]|$1|S|3|T|5|6|7|14|8|@]|D|@]|E|$]]|$1|U|3|-4|5|6|7|15|8|@]|D|@]|E|$]]]|V|$]]

This error can happen for numerous reasons, so this is meant to be a debugging hint. You may want to try using <code>xcodebuild</code> in the command line. It will give you details as to what files are the culprits. 

To do this, open Terminal and go to your project folder. Once there, type in 

<pre><code>xcodebuild -project YourProject.xcodeproj -scheme YourScheme
</code></pre>

or if you're working in a workspace

<pre><code>xcodebuild -workspace YourProject.xcworkspace -scheme YourScheme
</code></pre>

You may see A LOT of messages pop up, but at the very end of the output you should see the specific files that are causing the crash. Back in XCode, go into those files and start playing with some of the Swift syntax to see what's going on. In my case, it had to do with the setAttributeString function, but I've seen other people have issues with ! and ?. 

Hopefully that will get you headed in the right direction.

blocks|key|68591|text|我不得不将我的“优化级别”更改为无-0None。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|68592|目标>构建设置>快速编译器>优化级别。|68593|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

I had to change my "Optimization Level" to None[-0none]

Target > Build Settings > Swift Compiler > Optimization Level.

blocks|key|4969338|text|我的情况有点不同，它涉及到文稿和选拔赛。为了简单起见，让我们定义|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4969339|enum+Animal+{
++++case+Dog
++++case+Cat
}

func+exampleAction(animal:+Animal)+{}

exampleAction(.Cat)|code-block|syntax|javascript|4969340|一切都会好的。但是，当我将参数设置为可选参数时，错误就开始出现。所以这段代码不起作用：|4969341|func+exampleAction(animal:+Animal?)+{}

exampleAction(.Cat)|4969342|为了使它正常工作，我必须在方法调用中添加显式枚举名称。因此，以下代码再次工作：|4969343|exampleAction(Animal.Cat)|4969344|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|S|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|U|8|@]|9|@]|A|$]]|$1|M|3|N|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

My case was a little bit different and it involves enums and optionals. For the simplicity lets define

<pre><code>enum Animal {
 case Dog
 case Cat
}

func exampleAction(animal: Animal) {}

exampleAction(.Cat)
</code></pre>

It will run OK. However as soon as I made the argument optional the error started to appear. So this code won't work:

<pre><code>func exampleAction(animal: Animal?) {}

exampleAction(.Cat)
</code></pre>

To make it work I had to add explicit enum name in the method call. So the following code worked again:

<pre><code>exampleAction(Animal.Cat)
</code></pre>

blocks|key|5658921|text|我想它发生的原因很多，我遇到的就是这种情况，希望它能对你有所帮助。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|5658922|dispatch_async(dispatch_get_global_queue(+DISPATCH_QUEUE_PRIORITY_DEFAULT,+0)+){+[weak+self]+in

++++++++//+...
++++++++dispatch_async(dispatch_get_main_queue())+{+[weak+self]+in

++++++++++++//+...
++++++++++++return

++++++++}
++++}|code-block|syntax|javascript|5658923|在上面的代码中，只需删除称为捕获列表的“弱自”就可以删除编译器错误。对我来说很管用。|5658924|dispatch_async(dispatch_get_global_queue(+DISPATCH_QUEUE_PRIORITY_DEFAULT,+0)+){+[weak+self]+in

++++++++//+...
++++++++dispatch_async(dispatch_get_main_queue())+{

++++++++++++//+...
++++++++++++return

++++++++}
++++}|5658925|xCode版本为6.1.1|5658926|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|S|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

I think it occured for many reasons, what I have encountered is this situation,hope it could help you.

<pre><code>dispatch_async(dispatch_get_global_queue( DISPATCH_QUEUE_PRIORITY_DEFAULT, 0) ){ [weak self] in

 // ...
 dispatch_async(dispatch_get_main_queue()) { [weak self] in

 // ...
 return

 }
 }
</code></pre>

In the upper code,just delete "[weak self]" called capture list will remove the compiler error. It works for me.

<pre><code>dispatch_async(dispatch_get_global_queue( DISPATCH_QUEUE_PRIORITY_DEFAULT, 0) ){ [weak self] in

 // ...
 dispatch_async(dispatch_get_main_queue()) {

 // ...
 return

 }
 }
</code></pre>

xCode version is 6.1.1

blocks|key|68600|text|可能是同样的问题，Swift+compile+error+in+XCode+6+GM|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|68601|我也有同样的问题，然后我使用git签出旧版本来查找哪个提交导致了问题，并试图找到关键的问题代码。我的关键问题代码是这样的|68602|func+afunc()+{
++++class+AClass()+{
++++}
++++let+ac+=+AClass()
++++//....
}|code-block|syntax|javascript|68603|其他代码可能会造成同样的问题，出现在Swift优化中，而且快速编译器没有告诉您确切的位置。这一定是苹果公司的错误。|68604|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/questions/25792284/swift-compile-error-in-xcode-6-gm/26659419#26659419^0|9|X|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@$A|V|B|W|1|X]]|C|$]]|$1|D|3|E|5|6|7|Y|8|@]|9|@]|C|$]]|$1|F|3|G|5|H|7|Z|8|@]|9|@]|C|$I|J]]|$1|K|3|L|5|6|7|10|8|@]|9|@]|C|$]]|$1|M|3|-4|5|6|7|11|8|@]|9|@]|C|$]]]|N|$O|$5|P|Q|R|C|$S|T]]]]

May be the same issue
<a href="https://stackoverflow.com/questions/25792284/swift-compile-error-in-xcode-6-gm/26659419#26659419">Swift compile error in XCode 6 GM</a>

I had the same problem, then I use git checkout old versions to find which commit cause the problem, and try to find the key problem code. My key problem code is something like this

<pre><code>func afunc() {
 class AClass() {
 }
 let ac = AClass()
 //....
}
</code></pre>

Other code could make the same problem, occur in Swift Optimization, and swift compiler doesn't tell you the exact location. This must be a bug by Apple.

blocks|key|4969387|text|在我的例子中，我换了三个位置：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4969388|目标>构建设置>快速编译器>|4969389|优化水平|unordered-list-item|4969390|调试:无-Onone|4969391|发布:最快的-O|4969392|4969393|4969394|4969395|4969396|4969397|​|4969398|当我更改Debug时，出现了类似“源代码工具包崩溃.”之类的错误。这种组合的参数，对我工作非常好！|4969399|entityMap^0|0|0|1|1|1|1|1|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|V|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|W|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|X|8|@]|9|@]|A|$]]|$1|G|3|H|5|F|7|Y|8|@]|9|@]|A|$]]|$1|I|3|J|5|F|7|Z|8|@]|9|@]|A|$]]|$1|K|3|J|5|F|7|10|8|@]|9|@]|A|$]]|$1|L|3|-4|5|6|7|11|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|12|8|@]|9|@]|A|$]]|$1|N|3|-4|5|6|7|13|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|14|8|@]|9|@]|A|$]]|$1|P|3|Q|5|6|7|15|8|@]|9|@]|A|$]]|$1|R|3|S|5|6|7|16|8|@]|9|@]|A|$]]|$1|T|3|-4|5|6|7|17|8|@]|9|@]|A|$]]]|U|$]]

In my case i changed 3 places:

Target > Build Settings > Swift Compiler > 

<ul>
<li>Optimization Level.
<ul>
<li>Debug: None [-Onone]</li>
<li>Distribution: Fastest [-O]</li>
<li>Release: Fastest [-O]</li>
</ul></li>
</ul>

When i changed just Debug, i have errors like "Source Kit crashed...."
This combination of parameters, works very good for me!

blocks|key|5659043|text|如果您正在使用一些应该在早期iOS版本中使用的API，您可能会遇到构建失败。例如:如果您使用的是UI_USER_INTERFACE_IDIOM()而不是UIDevice.currentDevice().userInterfaceIdiom来标识设备类型，那么您将得到这个构建错误而没有任何提示。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|5659044|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

If you are using some API which should be used in early iOS version, you may get build failure.
For example: If you are using UI_USER_INTERFACE_IDIOM() instead of UIDevice.currentDevice().userInterfaceIdiom to identify the device type, you will get this build error with no hint.

blocks|key|70129|text|由于编译器的优化，很多人都有这个问题(包括我在内)。我不认为关闭优化是正确的解决方案--我希望我的代码尽可能快地运行。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|70130|重新运行xcodebuild手动没有任何好处，因为它运行它也没有优化。|70131|但是-错误屏幕给了我一个未能执行的命令：|70132|/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc+-target+arm64-apple-ios8.0+-incremental+-module-name+SpaceCats+-O+-sdk+/Applic...|code-block|syntax|javascript|70133|那里的-O是优化标志。|offset|length|style|CODE|70134|我在projects目录中重新运行了整个命令(按照上面的xcodebuild建议)，在所有的详细信息中，我发现了下面的错误：|70135|{
"kind":+"finished",
"name":+"compile",
"pid":+10682,
"output":+"Bitcast+requires+both+operands+to+be+pointer+or+neither\n++%25228+=+bitcast+i8*+%25227+to+%25VSs20UnsafeMutablePointer,+!dbg+!1322\nBitcast+requires+both+operands+to+be+pointer+or+neither\n++%25324+=+bitcast+i8*+%25323+to+%25VSs20UnsafeMutablePointer,+!dbg+!1322\nBitcast+requires+both+operands+to+be+pointer+or+neither\n++%25411+=+bitcast+i8*+%25410+to+%25VSs20UnsafeMutablePointer,+!dbg+!1322\nBitcast+requires+both+operands+to+be+pointer+or+neither\n++%25498+=+bitcast+i8*+%25497+to+%25VSs20UnsafeMutablePointer,+!dbg+!1322\nLLVM+ERROR:+Broken+function+found,+compilation+aborted!\n",
"exit-status":+1
}|70136|如果您希望它转到一个文件而不是屏幕上，那么在后面添加“2>filename”。|70137|然后，我必须在文件中找到pid+(10682)，以查看它正在编译什么。我手动运行pid的命令，它给出了特定文件的错误。那就归结为修改代码。|70138|entityMap^0|0|0|0|0|3|2|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|10|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|11|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|12|8|@]|9|@]|A|$]]|$1|F|3|G|5|H|7|13|8|@]|9|@]|A|$I|J]]|$1|K|3|L|5|6|7|14|8|@$M|15|N|16|O|P]]|9|@]|A|$]]|$1|Q|3|R|5|6|7|17|8|@]|9|@]|A|$]]|$1|S|3|T|5|H|7|18|8|@]|9|@]|A|$I|J]]|$1|U|3|V|5|6|7|19|8|@]|9|@]|A|$]]|$1|W|3|X|5|6|7|1A|8|@]|9|@]|A|$]]|$1|Y|3|-4|5|6|7|1B|8|@]|9|@]|A|$]]]|Z|$]]

A lot of people have this issue (me included) due to the optimisation on the compiler. I don't consider turning off the optimisation a correct resolution - I want my code optimised to run as quick as it can.

re-running xcodebuild manually didn't do any good as it ran it without the optimisations as well.

However - the error screen gave me the swiftc command that was failing:

<pre><code>/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc -target arm64-apple-ios8.0 -incremental -module-name SpaceCats -O -sdk /Applic...
</code></pre>

The <code>-O</code> there is the optimise flag.

I re-ran this whole command in the projects directory (as per xcodebuild recommendation above) and amongst all the details I found the error below:

<pre><code>{
"kind": "finished",
"name": "compile",
"pid": 10682,
"output": "Bitcast requires both operands to be pointer or neither\n %228 = bitcast i8* %227 to %VSs20UnsafeMutablePointer, !dbg !1322\nBitcast requires both operands to be pointer or neither\n %324 = bitcast i8* %323 to %VSs20UnsafeMutablePointer, !dbg !1322\nBitcast requires both operands to be pointer or neither\n %411 = bitcast i8* %410 to %VSs20UnsafeMutablePointer, !dbg !1322\nBitcast requires both operands to be pointer or neither\n %498 = bitcast i8* %497 to %VSs20UnsafeMutablePointer, !dbg !1322\nLLVM ERROR: Broken function found, compilation aborted!\n",
"exit-status": 1
}
</code></pre>

If you want it to go to a file instead of the screen, add " 2>filename" to the end. 

I then had to find the pid (10682) in the file to see what it was compiling. I ran the command for that pid manually and it gave me the error for the specific file. Then it comes down to fixing the code.

blocks|key|5659125|text|我看到了很多原因。我的答案不是一般的解决方案，只是添加了另一个提供错误的情况。在我的例子中，它设置了一个按钮的标题如下：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|5659126|button!.setTitleColor(.whiteColor(),+forState:+UIControlState.Normal)|code-block|syntax|javascript|5659127|而不是这样：|5659128|button!.setTitleColor(UIColor.whiteColor(),+forState:+UIControlState.Normal)|5659129|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

I see many reasons. My answer is not a generic solution but just adding yet another case that provide to that error. In my case it was setting a button's title like this:

<pre><code>button!.setTitleColor(.whiteColor(), forState: UIControlState.Normal)
</code></pre>

instead of this:

<pre><code>button!.setTitleColor(UIColor.whiteColor(), forState: UIControlState.Normal)
</code></pre>

blocks|key|4969578|text|在我的例子中，这个错误是由不正确的(UTF8)+.swift文件编码引起的；通过将文件的内容复制粘贴到一个新文件中来解决。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4969579|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

In my case this error was caused by the incorrect (UTF8) .swift file encoding;
Solved by copy-pasting the file's contents into a new file.

blocks|key|68553|text|变化|type|unstyled|depth|inlineStyleRanges|entityRanges|data|68554|func+tableView(tableView:+UITableView!,+cellForRowAtIndexPath+indexPath:+NSIndexPath!)+->+UITableViewCell!++|code-block|syntax|javascript|68555|至|68556|func+tableView(tableView:+UITableView,+cellForRowAtIndexPath+indexPath:+NSIndexPath)+->+UITableViewCell|68557|像这样对待其他人|68558|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|S|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

change 

<pre><code>func tableView(tableView: UITableView!, cellForRowAtIndexPath indexPath: NSIndexPath!) -&gt; UITableViewCell! 
</code></pre>

TO

<pre><code>func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -&gt; UITableViewCell
</code></pre>

and do the same to others like this

blocks|key|68640|text|转到文件夹:+Users/user/Library/Developer/Xcode/DerivedData|type|unstyled|depth|inlineStyleRanges|entityRanges|data|68641|清除所有文件，|68642|然后清理和分析，|68643|对我来说是工作。|68644|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|J|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|K|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|L|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|M|8|@]|9|@]|A|$]]|$1|H|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|I|$]]

Go to the folder: Users/user/Library/Developer/Xcode/DerivedData 

and clear all file,

then then clean and analyze,

It`s work to me.

blocks|key|68677|text|下面的代码显示了版本中的生成错误。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|68678|if+myValue+>+5+{+myValue+=+5.0+}
if+myValue+<+0+{+myValue+=+0+}|code-block|syntax|javascript|68679|在if语句之间添加else解决了问题：|offset|length|style|CODE|68680|if+myValue+>+5+{+myValue+=+5.0+}
else
if+myValue+<+0+{+myValue+=+0+}|68681|演示：https://github.com/exchangegroup/build-error-demo|68682|Xcode版本6.1+(6A1052d)。在调试中构建良好。向苹果Bug记者提交了机票。|68683|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/exchangegroup/build-error-demo^0|0|0|9|4|0|0|3|1D|0|0|0^^$0|@$1|2|3|4|5|6|7|10|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|11|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|12|8|@$I|13|J|14|K|L]]|9|@]|A|$]]|$1|M|3|N|5|D|7|15|8|@]|9|@]|A|$E|F]]|$1|O|3|P|5|6|7|16|8|@]|9|@$I|17|J|18|1|19]]|A|$]]|$1|Q|3|R|5|6|7|1A|8|@]|9|@]|A|$]]|$1|S|3|-4|5|6|7|1B|8|@]|9|@]|A|$]]]|T|$U|$5|V|W|X|A|$Y|Z]]]]

I have the following code showing build error in Release.

<pre><code>if myValue &gt; 5 { myValue = 5.0 }
if myValue &lt; 0 { myValue = 0 }
</code></pre>

Adding <code>else</code> between if statements fixed the issue:

<pre><code>if myValue &gt; 5 { myValue = 5.0 }
else
if myValue &lt; 0 { myValue = 0 }
</code></pre>

Demo: <a href="https://github.com/exchangegroup/build-error-demo" rel="nofollow">https://github.com/exchangegroup/build-error-demo</a>

Xcode Version 6.1 (6A1052d). Builds alright in debug. Submitted ticket to Apple Bug Reporter.

blocks|key|5658965|text|只是为了说明这一点:每当我将[unowned+self]放在块内的一个块中时，我就会得到这个错误，如下所示：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|5658966|lazy+var+someVar:+SomeType+=+{
++++self.successBlock+=+{[unowned+self]+in
++++++++//+...
++++}
}()|code-block|syntax|javascript|5658967|解决方案是只将[unowned+self]放在最顶层的块上。对于块中的块，似乎对self的引用是自动处理的。|5658968|当然，我只有通过@Maxwell的回答：https://stackoverflow.com/a/26848000/855680找到这个麻烦的文件，才能找到这个错误|5658969|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/a/26848000/855680^0|E|E|0|0|7|E|0|K|17|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@$9|X|A|Y|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|Z|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|10|8|@$9|11|A|12|B|C]]|D|@]|E|$]]|$1|M|3|N|5|6|7|13|8|@]|D|@$9|14|A|15|1|16]]|E|$]]|$1|O|3|-4|5|6|7|17|8|@]|D|@]|E|$]]]|P|$Q|$5|R|S|T|E|$U|V]]]]

Just to put this out there: I get this error whenever I put <code>[unowned self]</code> in a block within a block, like this:

<pre><code>lazy var someVar: SomeType = {
 self.successBlock = {[unowned self] in
 // ...
 }
}()
</code></pre>

The solution is to put the <code>[unowned self]</code> only at the topmost-level block. It seems an unowned reference to self is handled automatically for blocks within blocks.

Of course, I was only able to find this error by first finding out the troublesome file via @Maxwell's answer: <a href="https://stackoverflow.com/a/26848000/855680">https://stackoverflow.com/a/26848000/855680</a>

blocks|key|68692|text|把我的案子加到这里。每当我用无拥有的自我标记闭包时，我就得到了描述的错误，但在闭包本身中从来没有引用过自我。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|68693|例如：|68694|++++++++request.startWithSuccess({+[unowned+self]+(req:+CBRequest!,+object:+AnyObject!)+->+Void+in

++++++++++++if+let+result+=+object["result"]+as?+[NSObject:+AnyObject]
++++++++++++{
++++++++++++++++popup.type+=+result["email"]+==+nil+?+AuthPopupType.Signup+:+AuthPopupType.Login
++++++++++++}
++++++++++++else
++++++++++++{
++++++++++++++++println("WARNING:+Malformed+response+for+kCBCheckUniquenesPath+request.")
++++++++++++}

++++++++++++},+failure:+{+(req:+CBRequest!,+err:+NSError!)+->+Void+in

++++++++++++++++println("ERROR:+Failure+response+for+kCBCheckUniquenesPath+request.")
++++++++})|code-block|syntax|javascript|68695|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|L|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|M|8|@]|9|@]|A|$G|H]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

To add my case here. I got the described error whenever I mark the closure with [unowned self], but never reference the self in the closure itself.

For example: 

<pre><code> request.startWithSuccess({ [unowned self] (req: CBRequest!, object: AnyObject!) -&gt; Void in

 if let result = object["result"] as? [NSObject: AnyObject]
 {
 popup.type = result["email"] == nil ? AuthPopupType.Signup : AuthPopupType.Login
 }
 else
 {
 println("WARNING: Malformed response for kCBCheckUniquenesPath request.")
 }

 }, failure: { (req: CBRequest!, err: NSError!) -&gt; Void in

 println("ERROR: Failure response for kCBCheckUniquenesPath request.")
 })
</code></pre>

blocks|key|70101|text|通过遵循@maxvel的建议，我了解到max()和min()函数在发布模式下无法编译。我用我自己的功能代替了它，如下所示。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|70102|//Swift+compiler+seems+to+failing+to+compile+default+min+and+max+functions+in+release+
//mode+hence+writing+my+own
//
func+maximum<T:+Comparable>+(one:+T,+other:+T)+->+T+{
++++if+one+>+other+{
++++++++return+one
++++}
++++else+{
++++++++return+other
++++}
}

func+minimum<T:+Comparable>+(one:+T,+other:+T)+->+T+{
++++if+one+<+other+{
++++++++return+one
++++}
++++else+{
++++++++return+other
++++}
}|code-block|syntax|javascript|70103|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

By following @maxvel's suggestion, I got to know that
max() and min() functions failed to compile in the release mode. I replaced it with my own functions like below.

<pre><code>//Swift compiler seems to failing to compile default min and max functions in release 
//mode hence writing my own
//
func maximum&lt;T: Comparable&gt; (one: T, other: T) -&gt; T {
 if one &gt; other {
 return one
 }
 else {
 return other
 }
}

func minimum&lt;T: Comparable&gt; (one: T, other: T) -&gt; T {
 if one &lt; other {
 return one
 }
 else {
 return other
 }
}
</code></pre>

blocks|key|5659160|text|麦克斯韦的解给了你最接近的暗示。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|5659161|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

Maxwell's solution gives you the closest hint.

blocks|key|68768|text|在Xcode+6.4中编译SWIFT2.0语法时会遇到此错误：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|68769|print(string,+appendNewline:+true);|offset|length|style|CODE|68770|返回到Xcode+7，错误就消失了。|68771|entityMap^0|0|0|Z|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|M|8|@$D|N|E|O|F|G]]|9|@]|A|$]]|$1|H|3|I|5|6|7|P|8|@]|9|@]|A|$]]|$1|J|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|K|$]]

Encounter this error when compiling this Swift 2.0 syntax in Xcode 6.4:

<code>print(string, appendNewline: true);</code>

Back to Xcode 7 and the error is gone.

blocks|key|68798|text|在我的例子中，Xcode给出了错误，原因是下面的行：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|68799|if+UI_USER_INTERFACE_IDIOM()+==++UIUserInterfaceIdiom.Phone+{


}else+{

}|code-block|syntax|javascript|68800|为了修复这个错误，我定义了以下内容：|68801|enum+UIUserInterfaceIdiom+:+Int+{
++++case+Unspecified
++++case+Phone+//+iPhone+and+iPod+touch+style+UI
++++case+Pad+//+iPad+style+UI
}|68802|然后我用它就像：|68803|+if+UIDevice.currentDevice().userInterfaceIdiom+==+.Phone+{

}|68804|祝你好运！|68805|entityMap^0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|U|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|W|8|@]|9|@]|A|$]]|$1|M|3|N|5|D|7|X|8|@]|9|@]|A|$E|F]]|$1|O|3|P|5|6|7|Y|8|@]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|R|$]]

In my case Xcode gave the error because of the following line : 

<pre><code>if UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiom.Phone {


}else {

}
</code></pre>

And to fix the error I've defined this :

<pre><code>enum UIUserInterfaceIdiom : Int {
 case Unspecified
 case Phone // iPhone and iPod touch style UI
 case Pad // iPad style UI
}
</code></pre>

And then i used it like :

<pre><code> if UIDevice.currentDevice().userInterfaceIdiom == .Phone {

}
</code></pre>

Good luck !

blocks|key|4969806|text|我也收到了这个错误。我按照@Maxwell的建议在终端中运行这个命令，发现错误出现在我的GameViewController.swift文件中。仔细研究一下，发现它不喜欢某些自动生成的代码，或者与Xcode中的设置冲突的代码。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4969807|override+func+supportedInterfaceOrientations()+->+UIInterfaceOrientationMask+{

++++if+UIDevice.currentDevice().userInterfaceIdiom+==+.Phone+{
++++++++return+.AllButUpsideDown
++++}+else+{
++++++++return+.All
++++}
}|code-block|syntax|javascript|4969808|我一删除这个块，错误就消失了。|4969809|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

I was also getting this error. I ran the the command in Terminal as suggested by @Maxwell and found out the error was in my GameViewController.swift file. A little digging around and found that it didn't like some auto-generated code or the code conflicted with a setting in Xcode somewhere

<pre><code>override func supportedInterfaceOrientations() -&gt; UIInterfaceOrientationMask {

 if UIDevice.currentDevice().userInterfaceIdiom == .Phone {
 return .AllButUpsideDown
 } else {
 return .All
 }
}
</code></pre>

As soon as I removed this block the error went away.

blocks|key|69952|text|我认为真正的问题是错误太多，所以编译只告诉您一个混乱的错误代码。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|69953|但是您可以随时打开每个源代码文件，在其中您可以找到详细的错误信息和正确的建议。|69954|祝好运!|69955|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|H|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|I|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|J|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|G|$]]

I think the real problem is there are too many errors, so the compile tell you only a confused error code.

But you can always open the every source code file, in there you can find the detail error information and correct advice.

Good luck!

I just downloaded the GM release of Xcode 6 and it won't compile with this error:

<pre><code>Command /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc failed with exit code 1
</code></pre>

Any ideas on how to fix this?

GM release of Xcode 6 compile

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我刚刚下载了Xcode 6的GM版本，它不会使用这个错误进行编译：Command /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc failed with exit code 1有什么办法解决这个问题吗？

问GM发布Xcode 6编译
EN

回答 21

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回答 21

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