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  • Ios 我的应用程序崩溃了。。在NSLog中？真正地

Ios 我的应用程序崩溃了。。在NSLog中？真正地

ios

Ios 我的应用程序崩溃了。。在NSLog中？真正地,ios,crash,nslog,Ios,Crash,Nslog,这听起来非常非常奇怪，但似乎就是这个堆栈跟踪所暗示的 有什么想法吗 Thread: Unknown Name (Crashed) 0 0 libsystem_kernel.dylib 0x38a79350 __pthread_kill + 8 1 1 libsystem_c.dylib 0x34002973 abort + 94 2 2 libsystem_c.dylib 0

这听起来非常非常奇怪，但似乎就是这个堆栈跟踪所暗示的

有什么想法吗

Thread: Unknown Name (Crashed)
0   0   libsystem_kernel.dylib              0x38a79350 __pthread_kill + 8
1   1   libsystem_c.dylib                   0x34002973 abort + 94
2   2   libsystem_c.dylib                   0x33fccf19 <redacted>
3   3   libsystem_c.dylib                   0x33fcd1dd <redacted> + 28
4   4   libsystem_c.dylib                   0x33f9977b <redacted> + 214
5   5   libsystem_c.dylib                   0x33f98773 <redacted> + 1198
6   6   libsystem_c.dylib                   0x33f98293 malloc_zone_malloc + 70
7   7   CoreFoundation                      0x36a32a10 <redacted> + 252
8   8   CoreFoundation                      0x36a33e4c <redacted> + 92
9   9   CoreFoundation                      0x3695b777 CFDictionarySetValue + 166
10  10  CoreFoundation                      0x36a27467 <redacted> + 102
11  11  CoreFoundation                      0x369a2347 CFCalendarCreateWithIdentifier + 534
12  12  CoreFoundation                      0x36a06f8b <redacted> + 106
13  13  CoreFoundation                      0x369ab021 _CFLogvEx + 188
14  14  Foundation                          0x347a5d8f NSLogv + 86
15  15  Foundation                          0x347a5d2f NSLog + 26
16  16  TypOHD                              0x000efe5f -[TypoViewControllerBase markIt:] (TypoViewControllerBase.m:325)
编辑：

一些在日志中的挖掘表明，这是一种记忆不足的情况，导致了后来的怪异。但是我怀疑内存泄漏不是由这种方法引起的。据我所知，它正确地释放了它的上下文，对吗

Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGBitmapContextInfoCreate: unable to allocate 8552448 bytes for bitmap data
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetStrokeColorWithColor: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSaveGState: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetLineWidth: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetLineJoin: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetLineCap: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetMiterLimit: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetFlatness: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetLineDash: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextAddPath: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextDrawPath: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextRestoreGState: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSaveGState: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetLineWidth: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetLineJoin: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetLineCap: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetMiterLimit: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetFlatness: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetLineDash: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextAddPath: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextDrawPath: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextRestoreGState: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSaveGState: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetLineWidth: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetLineJoin: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetLineCap: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetMiterLimit: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetFlatness: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetLineDash: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextAddPath: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextDrawPath: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextRestoreGState: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSaveGState: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetLineWidth: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetLineJoin: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetLineCap: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetMiterLimit: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetFlatness: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetLineDash: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextAddPath: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextDrawPath: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextRestoreGState: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSaveGState: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetLineWidth: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetLineJoin: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetLineCap: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetMiterLimit: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetFlatness: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetLineDash: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextAddPath: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextDrawPath: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextRestoreGState: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSaveGState: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetLineWidth: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetLineJoin: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetLineCap: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetMiterLimit: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetFlatness: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetLineDash: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextAddPath: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextDrawPath: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextRestoreGState: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSaveGState: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetLineWidth: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetLineJoin: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetLineCap: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetMiterLimit: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetFlatness: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetLineDash: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextAddPath: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextDrawPath: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextRestoreGState: invalid context 0x0
2
或者更确切地说，特别是firstRectForRange方法

然而：
注释掉整个markIt方法只会将内存不足的条件移到别处。我想是时候真正学习如何使用XCode工具查找内存泄漏了。

一些代码可能会有所帮助。。这条线上有什么？（TypoViewControllerBase.m:325）您的NSLog看起来怎么样？以及围绕它的代码？注释日志并检查它是否工作。如果您使用无效的上下文进行绘制，则意味着只有在分配了太多内存的情况下，才能在DrawRect方法中获得有效的上下文。使用仪器（分配工具）查看内存使用情况。图像上下文需要超过8MB的内存。我猜你是在iPad3模拟器上运行的。 
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGBitmapContextInfoCreate: unable to allocate 8552448 bytes for bitmap data
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetStrokeColorWithColor: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSaveGState: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetLineWidth: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetLineJoin: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetLineCap: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetMiterLimit: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetFlatness: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetLineDash: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextAddPath: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextDrawPath: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextRestoreGState: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSaveGState: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetLineWidth: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetLineJoin: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetLineCap: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetMiterLimit: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetFlatness: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetLineDash: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextAddPath: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextDrawPath: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextRestoreGState: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSaveGState: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetLineWidth: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetLineJoin: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetLineCap: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetMiterLimit: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetFlatness: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetLineDash: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextAddPath: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextDrawPath: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextRestoreGState: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSaveGState: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetLineWidth: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetLineJoin: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetLineCap: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetMiterLimit: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetFlatness: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetLineDash: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextAddPath: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextDrawPath: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextRestoreGState: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSaveGState: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetLineWidth: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetLineJoin: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetLineCap: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetMiterLimit: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetFlatness: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetLineDash: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextAddPath: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextDrawPath: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextRestoreGState: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSaveGState: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetLineWidth: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetLineJoin: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetLineCap: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetMiterLimit: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetFlatness: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetLineDash: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextAddPath: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextDrawPath: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextRestoreGState: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSaveGState: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetLineWidth: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetLineJoin: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetLineCap: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetMiterLimit: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetFlatness: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextSetLineDash: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextAddPath: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextDrawPath: invalid context 0x0
Oct  2 20:23:55 Admins-MacBook-Pro.local SkrivestotteHD[35780] <Error>: CGContextRestoreGState: invalid context 0x0
2

CGRect rectInTextView = [self.source firstRectForRange:textRange];