应用程序崩溃，但无法指出它

Question

让应用崩溃，
但是无法指出它，为异常抛出添加了断点，
但这也没有帮助。

这是我遇到崩溃的日志，

Exception Type:  EXC_BAD_ACCESS (SIGSEGV)
Exception Subtype: KERN_INVALID_ADDRESS at 0x42fa0004
Triggered by Thread:  0

Thread 0 name:  Dispatch queue: com.apple.main-thread
Thread 0 Crashed:
0   UIFoundation                    0x372fe93e -[NSParagraphStyle _isSuitableForFastStringDrawingWithAlignment:lineBreakMode:tighteningFactorForTruncation:] + 542
1   UIFoundation                    0x373074a2 __NSStringDrawingEngine + 3286
2   UIFoundation                    0x373066fc -[NSString(NSExtendedStringDrawing) drawWithRect:options:attributes:context:] + 144
3   UIKit                           0x2fe3185c -[UILabel _drawTextInRect:baselineCalculationOnly:] + 4436
4   UIKit                           0x2fe974ac -[UILabel drawTextInRect:] + 484
5   UIKit                           0x2fe972bc -[UILabel drawRect:] + 80
6   UIKit                           0x2fe97244 -[UIView(CALayerDelegate) drawLayer:inContext:] + 396
7   QuartzCore                      0x2f87567c -[CALayer drawInContext:] + 224
8   QuartzCore                      0x2f85e2ce CA::Layer::display_() + 510
9   QuartzCore                      0x2f842b18 CA::Layer::display_if_needed(CA::Transaction*) + 196
10  QuartzCore                      0x2f8427dc CA::Layer::layout_and_display_if_needed(CA::Transaction*) + 20
11  QuartzCore                      0x2f8421c2 CA::Context::commit_transaction(CA::Transaction*) + 218
12  QuartzCore                      0x2f841fcc CA::Transaction::commit() + 320
13  QuartzCore                      0x2f83bed8 CA::Transaction::observer_callback(__CFRunLoopObserver*, unsigned long, void*) + 52
14  CoreFoundation                  0x2c940012 __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 18
15  CoreFoundation                  0x2c93d6f4 __CFRunLoopDoObservers + 272
16  CoreFoundation                  0x2c93daf6 __CFRunLoopRun + 910
17  CoreFoundation                  0x2c88ab2c CFRunLoopRunSpecific + 472
18  CoreFoundation                  0x2c88a93e CFRunLoopRunInMode + 102
19  GraphicsServices                0x33c4104c GSEventRunModal + 132
20  UIKit                           0x2fe7cf1c UIApplicationMain + 1436
21  myapp                       0x0033c56c main (main.m:14)
22  libdyld.dylib                   0x3a64faac start + 0

Answer 1

启用Zombie Objects

选择目标----＆gt;编辑方案.. ----＆gt;运行[诊断]

之后运行应用程序。你会知道你的崩溃错误在哪里。