所有异常断点都在模拟器上无故停止

时间:2014-12-09 09:38:49

标签: objective-c xcode ios-simulator

这非常烦人,每当我尝试使用“所有异常断点”在模拟器上进行调试时,app就会无缘无故停止:

return UIApplicationMain(argc, argv, nil, NSStringFromClass([STAppDelegate class]));

是否有其他人发现他在这个问题上自我挣扎?

谢谢!

修改

第一次投掷回溯:

 thread #1: tid = 0x1d96b, 0x36fbf540 libc++abi.dylib`__cxa_throw, queue = 'com.apple.main-thread', stop reason = breakpoint 3.2
    frame #0: 0x36fbf540 libc++abi.dylib`__cxa_throw
    frame #1: 0x306975cc libFontParser.dylib`TFileDescriptorContext::TFileDescriptorContext(char const*) + 112
    frame #2: 0x306973d8 libFontParser.dylib`TFileDataReference::TFileDataReference(char const*) + 164
    frame #3: 0x306971fc libFontParser.dylib`TFileDataSurrogate::TFileDataSurrogate(char const*, bool) + 188
    frame #4: 0x3069555a libFontParser.dylib`TFont::CreateFontEntitiesForFile(char const*, bool, TSimpleArray<TFont*>&, bool, short, char const*) + 1402
    frame #5: 0x30694a80 libFontParser.dylib`FPFontCreateFontsWithPath + 224
    frame #6: 0x2a5032bc libCGXType.A.dylib`create_private_data_with_path + 12
    frame #7: 0x2a3ca3c4 CoreGraphics`CGFontCreateFontsWithPath + 24
    frame #8: 0x2a4855d6 CoreGraphics`CGFontCreateFontsWithURL + 310
    frame #9: 0x313dfee4 GraphicsServices`AddFontsFromURLOrPath + 68
    frame #10: 0x313e39de GraphicsServices`__Initialize_block_invoke + 934
    frame #11: 0x0121fabe libdispatch.dylib`_dispatch_client_callout + 22
    frame #12: 0x01220750 libdispatch.dylib`dispatch_once_f + 100
    frame #13: 0x313df72c GraphicsServices`Initialize + 196
    frame #14: 0x377944c4 libobjc.A.dylib`_class_initialize + 536
    frame #15: 0x3779a046 libobjc.A.dylib`lookUpImpOrForward + 254
    frame #16: 0x37799f3e libobjc.A.dylib`_class_lookupMethodAndLoadCache3 + 34
    frame #17: 0x377a01f8 libobjc.A.dylib`_objc_msgSend_uncached + 24
    frame #18: 0x2d673b6e UIKit`-[UIStatusBarNewUIForegroundStyleAttributes makeTextFontForStyle:] + 78
    frame #19: 0x2d634d94 UIKit`-[UIStatusBarForegroundStyleAttributes textFontForStyle:] + 104
    frame #20: 0x2d5e767e UIKit`-[UIStatusBarServiceItemView updateForContentType:serviceString:serviceCrossfadeString:maxWidth:actions:] + 390
    frame #21: 0x2d5e74ee UIKit`-[UIStatusBarServiceItemView updateForNewData:actions:] + 186
    frame #22: 0x2d6428d0 UIKit`-[UIStatusBarItemView initWithItem:data:actions:style:] + 324
    frame #23: 0x2d642568 UIKit`-[UIStatusBarLayoutManager _createViewForItem:withData:actions:] + 108
    frame #24: 0x2d5e6f74 UIKit`-[UIStatusBarLayoutManager _prepareEnabledItemType:withEnabledItems:withData:actions:itemAppearing:itemDisappearing:] + 264
    frame #25: 0x2d5e6e22 UIKit`-[UIStatusBarLayoutManager prepareEnabledItems:withData:actions:] + 74
    frame #26: 0x2d5e6c72 UIKit`-[UIStatusBarForegroundView _setStatusBarData:actions:animated:] + 162
    frame #27: 0x2d5e6b96 UIKit`-[UIStatusBarForegroundView setStatusBarData:actions:animated:] + 710
    frame #28: 0x2d671ebe UIKit`__44-[UIStatusBar _prepareToSetStyle:animation:]_block_invoke + 358
    frame #29: 0x2d5fc230 UIKit`+[UIView(Animation) performWithoutAnimation:] + 72
    frame #30: 0x2d66fcf4 UIKit`-[UIStatusBar _prepareToSetStyle:animation:] + 688
    frame #31: 0x2d6579ca UIKit`-[UIStatusBar _requestStyleAttributes:animationParameters:] + 290
    frame #32: 0x2d65696e UIKit`-[UIStatusBar requestStyle:animated:] + 86
    frame #33: 0x2d65559a UIKit`-[UIApplication _createStatusBarWithRequestedStyle:orientation:hidden:] + 406
    frame #34: 0x2d85122a UIKit`-[UIApplication _runWithMainScene:transitionContext:completion:] + 970
    frame #35: 0x2d85bc68 UIKit`__84-[UIApplication _handleApplicationActivationWithScene:transitionContext:completion:]_block_invoke + 36
    frame #36: 0x2d84fc5a UIKit`-[UIApplication workspaceDidEndTransaction:] + 130
    frame #37: 0x3086c0e0 FrontBoardServices`__31-[FBSSerialQueue performAsync:]_block_invoke + 12
    frame #38: 0x2a13782c CoreFoundation`__CFRUNLOOP_IS_CALLING_OUT_TO_A_BLOCK__ + 12
    frame #39: 0x2a136af0 CoreFoundation`__CFRunLoopDoBlocks + 216
    frame #40: 0x2a13564a CoreFoundation`__CFRunLoopRun + 1714
    frame #41: 0x2a082db0 CoreFoundation`CFRunLoopRunSpecific + 476
    frame #42: 0x2a082bc2 CoreFoundation`CFRunLoopRunInMode + 106
    frame #43: 0x2d653c36 UIKit`-[UIApplication _run] + 558
    frame #44: 0x2d64ea30 UIKit`UIApplicationMain + 1440
  * frame #45: 0x003b4ec2 Stox`main(argc=1, argv=0x01200b08) + 178 at main.m:17

第三

 thread #1: tid = 0x1d96b, 0x36fbf540 libc++abi.dylib`__cxa_throw, queue = 'com.apple.main-thread', stop reason = breakpoint 3.2
    frame #0: 0x36fbf540 libc++abi.dylib`__cxa_throw
    frame #1: 0x30798c22 libTrueTypeScaler.dylib`ScalerNewBlock(memoryContext*, long, long, void*, unsigned char, unsigned char) + 430
    frame #2: 0x3077e172 libTrueTypeScaler.dylib`OutlineToPath(memoryContext*, fnt_ElementType const*) + 178
    frame #3: 0x3079502a libTrueTypeScaler.dylib`ObtainDesiredOutline(memoryContext*, fnt_ElementType const*, unsigned long, void**) + 10
    frame #4: 0x3077e07c libTrueTypeScaler.dylib`RenderPath(fsg_SplineKey*, memoryContext*, scalerGlyph const*) + 36
    frame #5: 0x3077c980 libTrueTypeScaler.dylib`TTRenderGlyphs + 436
    frame #6: 0x306c5722 libFontParser.dylib`TConcreteFontScaler::CopyGlyphPath(unsigned short, CGAffineTransform const*) const + 378
    frame #7: 0x306a0ce6 libFontParser.dylib`FPFontCopyGlyphPath + 494
    frame #8: 0x2a3abb4a CoreGraphics`CGFontCreateGlyphPath + 30
    frame #9: 0x2a3aba56 CoreGraphics`CGFontCreateGlyphBitmap + 266
    frame #10: 0x2a3b3c1a CoreGraphics`CGGlyphBuilder::create_missing_bitmaps(CGGlyphIdentifier const*, unsigned long, CGGlyphBitmap const**) + 82
    frame #11: 0x2a6fd4dc libRIP.A.dylib`render_glyphs + 172
    frame #12: 0x2a6fcaca libRIP.A.dylib`draw_glyph_bitmaps + 906
    frame #13: 0x2a6fc430 libRIP.A.dylib`ripc_DrawGlyphs + 1108
    frame #14: 0x2a3a1002 CoreGraphics`draw_glyphs + 274
    frame #15: 0x2aaae268 CoreText`DrawSbixGlyphsAtPositions(TFont const*, CGFont*, TCFRef<__CFData const*> const&, unsigned short const*, CGPoint const*, unsigned long, CGContext*, CGAffineTransform, CGAffineTransform) + 1880
    frame #16: 0x2aa6bcce CoreText`CTFontDrawGlyphsWithAdvances + 470
    frame #17: 0x349eba1a UIFoundation`__NSStringDrawingEngine + 6710
    frame #18: 0x349efa64 UIFoundation`-[NSAttributedString(NSExtendedStringDrawing) drawWithRect:options:context:] + 532
    frame #19: 0x2d603370 UIKit`-[UILabel _drawTextInRect:baselineCalculationOnly:] + 4440
    frame #20: 0x2d668ed4 UIKit`-[UILabel drawTextInRect:] + 488
    frame #21: 0x2d668ce8 UIKit`-[UILabel drawRect:] + 84
    frame #22: 0x2d668c70 UIKit`-[UIView(CALayerDelegate) drawLayer:inContext:] + 400
    frame #23: 0x2d045910 QuartzCore`-[CALayer drawInContext:] + 228
    frame #24: 0x2d02f350 QuartzCore`CABackingStoreUpdate_ + 2068
    frame #25: 0x2d110b6c QuartzCore`___ZN2CA5Layer8display_Ev_block_invoke + 52
    frame #26: 0x2d02eb34 QuartzCore`x_blame_allocations + 88
    frame #27: 0x2d02e7e4 QuartzCore`CA::Layer::display_() + 1156
    frame #28: 0x2d012d9c QuartzCore`CA::Layer::display_if_needed(CA::Transaction*) + 200
    frame #29: 0x2d012a60 QuartzCore`CA::Layer::layout_and_display_if_needed(CA::Transaction*) + 24
    frame #30: 0x2d012446 QuartzCore`CA::Context::commit_transaction(CA::Transaction*) + 222
    frame #31: 0x2d012250 QuartzCore`CA::Transaction::commit() + 324
    frame #32: 0x2d5e51c8 UIKit`_afterCACommitHandler + 132
    frame #33: 0x2a137844 CoreFoundation`__CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 20
    frame #34: 0x2a134f28 CoreFoundation`__CFRunLoopDoObservers + 276
    frame #35: 0x2a13532a CoreFoundation`__CFRunLoopRun + 914
    frame #36: 0x2a082db0 CoreFoundation`CFRunLoopRunSpecific + 476
    frame #37: 0x2a082bc2 CoreFoundation`CFRunLoopRunInMode + 106
    frame #38: 0x313e7050 GraphicsServices`GSEventRunModal + 136
    frame #39: 0x2d64ea30 UIKit`UIApplicationMain + 1440
  * frame #40: 0x003b4ec2 Stox`main(argc=1, argv=0x01200b08) + 178 at main.m:17

7 个答案:

答案 0 :(得分:71)

我刚刚遇到了同样的问题,并追踪了问题。

确保您在Info.plist下的Fonts provided by this application中指定的所有字体实际上都在您的应用包中。

答案 1 :(得分:41)

有一种更准确的方法可以使用调试器跟踪应用中的可疑字体,以及在呼叫时方便停止的事实。

步骤1:重现__cxa_throw断点

通常在实例化应用程序中的某个(或可能是第一个)UIView对象时会发生这种情况。您将看到您的调试器已损坏,您将拥有如下堆栈:

Stack Trace of exception loading font

步骤2:使用符号/ search \% extended u unicode 00b1 heaxadecimal code

选择堆栈跟踪中的条目

就我而言,这个条目是堆栈中的第7行。

Selected Stack Entry

如果您查看反汇编,您会注意到此条目的函数签名:

Stack Entry showing function signature symbols

啊,很酷!看起来它需要一些C字符串。我敢打赌其中一个也是一个文件路径!

步骤3:在应用程序内存中找到该字符串

我在(x86_64)模拟器中运行它,在我的计算机上将函数参数存储在以FPFontCreateFontsWithPath开头的一些寄存器中。 More details on registers here

General Purpose Registers

按Shift + Command + M或从菜单中选择“Debug&gt; Debug Workflow&gt; View Memory”选项。

在此视图的底部,逐个浏览寄存器并输入地址。在我的例子中,r14包含文件的路径。

Memory location of filepath

好吧,现在我知道了搞砸了的字体。它正在寻找HelveticaNeue.ttc。让我们在项目中找到对它的引用。

打开终端,导航到您的项目并运行:

r

太棒了,现在要么通过将$ ~/W/X/project> grep -R "HelveticaNeue" ./ .//MyProject/Main.Storyboard: <array key="HelveticaNeue.ttc"> .//MyProject/Main.Storyboard: <string>HelveticaNeue</string> .//MyProject/Main.Storyboard: <fontDescription key="fontDescription" name="HelveticaNeue" family="Helvetica Neue" pointSize="18"/> 替换为name="HelveticaNeue" family="Helvetica Neue"来切换到系统,打开故事板并手动编辑它们,或者将缺少的字体添加到应用程序中(info.plist和target) 。

第4步:庆祝

答案 2 :(得分:39)

正如回溯所示,应用程序没有任何理由停止。它因为抛出异常而停止,它看起来像是一个C ++异常。

与Objective-C不同,其中异常只应作为编程错误的结果抛出,因此非常罕见,有很多C ++代码抛出并捕获大量异常。在这种情况下,最好只在Objective-C异常上设置断点,而不是所有异常。

答案 3 :(得分:3)

如果您在.plist文件中没有发现问题,可能是问题出在.storyboard文件中。 从Xcode或Finder的textView中打开它作为源代码 - 搜索<customFonts key="customFonts"> 我有一些旧的不相关的数组/字体里面... :)只是删除它,它停止

答案 4 :(得分:2)

在我的情况下,引用位于xcuserdata

user$ grep -R "HelveticaNeue" ./
Binary file .//MyProject.xcworkspace/xcuserdata/user.xcuserdatad/UserInterfaceState.xcuserstate matches

答案 5 :(得分:0)

正在抛出异常,但是调用者(例如在libFontParser和libTrueTypeScaler中)正在处理它并且它没有到达你的程序。

除非您看到问题的其他证据(例如日志消息)或异常到达您的程序,否则假定实现正在处理它。您可以毫不费力地在调试器中继续经过这些实例。

答案 6 :(得分:0)

我通过将nmock's answerDaNLtR's answer结合起来解决了这个问题。

所以起初我寻找<customFonts key="customFonts">,里面有Montserrat-Light
但是它既没有出现在info.plist中,也没有添加到项目中。

Montserrat-Light.ttf捆绑到项目中并在Fonts provided by this application的{​​{1}}下添加了该字体的条目后,问题消失了。

因此,以下是上述解决方案的摘要:

  1. info.plistStoryboard文件中查找所有自定义字体。
    您将在Xib
  2. 中找到它们
  3. 如果提到了实际上个自定义字体,请执行步骤3和4
  4. 将字体添加到Xcode项目。
  5. <customFonts key="customFonts">下的info.plist中添加一个条目。
    此项应为字体文件的名称,后跟扩展名。
  6. 如果Fonts provided by this application不包含任何自定义字体(例如Helvetica-Neue等),请尝试删除<customFonts key="customFonts"><customFonts key="customFonts">文件中的Stroyboard条目如DaNLtR's answer
  7. 中所述

我知道回答的时间很晚,但希望对您有所帮助。