Application received signal SIGSEGV

目的：如何解析Umeng该错误？

方法：慢慢往下看！

1. Umeng错误log

Application received signal SIGSEGV
(null)
((
    0   CoreFoundation                      0x00000001868425b8  + 160
    1   libobjc.A.dylib                     0x0000000196f8c0e4 objc_exception_throw + 60
    2   CoreFoundation                      0x00000001868424dc  + 0
    3   coboelafs                           0x1003440ac coboelafs + 3424428
    4   libsystem_platform.dylib            0x00000001977a894c _sigtramp + 52
    5   coboelafs                           0x10038e0b8 coboelafs + 3727544
    6   UIKit                               0x000000018b2c7138  + 72
    7   UIKit                               0x000000018b00cef4  + 500
    8   UIKit                               0x000000018b2c7e40  + 864
    9   UIKit                               0x000000018b0c8fbc  + 400
    10  UIKit                               0x000000018b0c8de4  + 44
    11  UIKit                               0x000000018afee1cc  + 448
    12  coboelafs                           0x10038cad0 coboelafs + 3721936
    13  CoreFoundation                      0x0000000186721228 CFRelease + 524
    14  CoreFoundation                      0x000000018672d7e8  + 152
    15  libobjc.A.dylib                     0x0000000196fa5724  + 564
    16  CoreFoundation                      0x0000000186724e44 _CFAutoreleasePoolPop + 28
    17  CoreFoundation                      0x00000001867f8054  + 1500
    18  CoreFoundation                      0x00000001867250a4 CFRunLoopRunSpecific + 396
    19  GraphicsServices                    0x000000018f8bf5a4 GSEventRunModal + 168
    20  UIKit                               0x000000018b056aa4 UIApplicationMain + 1488
    21  coboelafs                           0x1001066d0 coboelafs + 1074896
    22  libdyld.dylib                       0x00000001975faa08  + 4
)

dSYM UUID: 317EAB41-4847-3465-8B91-87678EDB62FD
CPU Type: arm64
Slide Address: 0x0000000100000000
Binary Image: coboelafs
Base Address: 0x0000000100024000

2. 找到，这个是关键 。

5   coboelafs                           0x10038e0b8 coboelafs + 3727544

3. 获取本地对应该线上版本的Archives路径。

$ cd /Users/apple/Library/Developer/Xcode/Archives/2018-01-06/coboelafs\ 2018-1-6\ 上午11.50.xcarchive/dSYMs

4. 然后获取该路径下dSYM UUID。

$ dwarfdump --uuid coboelafs.app.dSYM

5. 运行(4)后得到以下内容：

UUID: A548B3E3-DB86-3021-A806-72CD14056C7C (armv7) coboelafs.app.dSYM/Contents/Resources/DWARF/coboelafs
UUID: 317EAB41-4847-3465-8B91-87678EDB62FD (arm64) coboelafs.app.dSYM/Contents/Resources/DWARF/coboelafs

正好和(1)中的dSYM UUID匹配。

6. 查找(2)中0x10038e0b8地址所表示的含义：
   Umeng错误信息提示.png

   运行以下代码：

# 注意0x10038e0b8与路径中间有个空格，否则会报not found错误
dwarfdump --arch=armv7 --lookup 0x10038e0b8 /Users/apple/Library/Developer/Xcode/Archives/2018-01-06/coboelafs\ 2018-1-6\ 上午11.50.xcarchive/dSYMs/coboelafs.app.dSYM/Contents/Resources/DWARF/coboelafs 

7. 得到结果

Looking up address: 0x000000010038e0b8 in .debug_info... found!

0x004a60f5: Compile Unit: length = 0x00005370  version = 0x0002  abbr_offset = 0x00000000  addr_size = 0x08  (next CU at 0x004ab469)

0x004a6100: TAG_compile_unit [115] *
             AT_producer( "Apple LLVM version 9.0.0 (clang-900.0.38)" )
             AT_language( DW_LANG_ObjC )
             AT_name( "/Users/apple/Desktop/功途/Universal-iOS/coboelafs/Pods/SwipeView/SwipeView/SwipeView.m" )
             AT_stmt_list( 0x001daa40 )
             AT_comp_dir( "/Users/apple/Desktop/功途/Universal-iOS/coboelafs/Pods" )
             AT_APPLE_optimized( 0x01 )
             AT_APPLE_major_runtime_vers( 0x02 )
             AT_low_pc( 0x000000010038c5e4 )
             AT_high_pc( 0x0000000100390588 )

0x004a8bdc:     TAG_subprogram [149] *
                 AT_low_pc( 0x000000010038e06c )
                 AT_high_pc( 0x000000010038e1a4 )
                 AT_frame_base( reg29 )
                 AT_object_pointer( {0x004a8bfd} )
                 AT_name( "-[SwipeView didScroll]" )
                 AT_decl_file( "/Users/apple/Desktop/功途/Universal-iOS/coboelafs/Pods/SwipeView/SwipeView/SwipeView.m" )
                 AT_decl_line( 609 )
                 AT_prototyped( 0x01 )
                 AT_APPLE_optimized( 0x01 )
Line table dir : '/Users/apple/Desktop/功途/Universal-iOS/coboelafs/Pods/SwipeView/SwipeView'
Line table file: 'SwipeView.m' line 618, column 10 with start address 0x000000010038e0b8

8. 结果显而易见了。