XCode 4.2 clang seg fault [英] XCode 4.2 clang seg fault

问题描述

刚刚升级到Lion和xcode 4.2。现在当我重新编译我的程序，我得到这些错误：

1. / Users / XXX / Code / iPhone / XXX / Code / Scenes / GameScene.mm：1806：35：current parser token';'


2. / Users / XXX / Code / iPhone /XXX/Code/Scenes/GameScene.mm:1762:1：解析Objective-C方法'updateWithTouchLocationMoved：withEvent：view：'


3. /Users/XXX/Code/iPhone/XXX/Code/Scenes/GameScene.mm:1762:1：在复合语句（'{}'）


4. /Users/XXX/Code/iPhone/XXX/Code/Scenes/GameScene.mm:1771:2：在复合语句（'{}'）


5. /Users/XXX/Code/iPhone/XXX/Code/Scenes/GameScene.mm:1789:3：在复合语句（'{}'）


6. /Users/XXX/Code/iPhone/XXX/Code/Scenes/GameScene.mm:1796:4：在复合语句'）


7. /Users/XXX/Code/iPhone/XXX/Code/Scenes/GameScene.mm:1799:5：in复合语句（'{}'）

clang：错误：无法执行命令：Segmentation fault：11

clang：error：clang frontend命令由于信号2失败（使用-v查看调用）

这些行号周围没有什么奇怪的。没有复合语句，只是简单如果（a == b）类型的东西。一些错误行号甚至不在语句上，只是空行或{括号。我怀疑行号不准确。我现在在水里死了。

解决方案

我建议阻止编译器崩溃。在代码行后面注释，看看实际发生的地方我到达这一行：

  shape.shapeType | = kTypeBreakable; 
  

正在做...

  shape.shapeType = shape.shapeType | kTypeBreakable; 
  

...编译得很好。 ...

  shape.shapeType | = 0x00000200; 
  

kTypeBreakable 是一个枚举， 0x00000200

shapeType 只是一个obj-c物件变量与getter /设置。

非常奇怪的编译器错误。

Just upgraded to Lion and xcode 4.2. Now when I recompile my program I getting these errors:

1. /Users/XXX/Code/iPhone/XXX/Code/Scenes/GameScene.mm:1806:35: current parser token ';'
2. /Users/XXX/Code/iPhone/XXX/Code/Scenes/GameScene.mm:1762:1: parsing Objective-C method 'updateWithTouchLocationMoved:withEvent:view:'
3. /Users/XXX/Code/iPhone/XXX/Code/Scenes/GameScene.mm:1762:1: in compound statement ('{}')
4. /Users/XXX/Code/iPhone/XXX/Code/Scenes/GameScene.mm:1771:2: in compound statement ('{}')
5. /Users/XXX/Code/iPhone/XXX/Code/Scenes/GameScene.mm:1789:3: in compound statement ('{}')
6. /Users/XXX/Code/iPhone/XXX/Code/Scenes/GameScene.mm:1796:4: in compound statement ('{}')
7. /Users/XXX/Code/iPhone/XXX/Code/Scenes/GameScene.mm:1799:5: in compound statement ('{}')
clang: error: unable to execute command: Segmentation fault: 11
clang: error: clang frontend command failed due to signal 2 (use -v to see invocation)

There is nothing odd going on around those line numbers. No compound statements, just simple if (a == b) type stuff. Some of the error line numbers aren't even on statements, just blank lines or a { brace. I suspect that the line numbers are not accurate. I'm kind of dead in the water now. Code compiled fine under 4.1.

Any advice?

解决方案

I stopped the compiler from crashing. After commenting out line after line of code to see where this was actually happening I arrived at this line:

shape.shapeType |= kTypeBreakable;

Doing...

shape.shapeType = shape.shapeType | kTypeBreakable;

...compiles fine. So does...

shape.shapeType |= 0x00000200;

kTypeBreakable is an enum that is set to 0x00000200

shapeType is just a obj-c object variable with a getter/setting.

Very very odd compiler bug.

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