我使用了一个狡猾的第三方框架，需要我做一些真正的工作才能让它发挥作用。简而言之，它们提供了两个导致duplicated symbols链接器错误的框架;我不得不使用libtool合并2个框架，这不是一个有趣的旅程。
它工作了几次，但奇怪的是我现在崩溃了。这是崩溃日志：
<Project Name>`__26-[IDTechEMV swipeMSRData:]_block_invoke:
0x100401a40 <+0>: stp x29, x30, [sp, #-16]!
0x100401a44 <+4>: mov x29, sp
0x100401a48 <+8>: sub sp, sp, #48
0x100401a4c <+12>: adrp x8, 372
0x100401a50 <+16>: add x8, x8, #3360
0x100401a54 <+20>: adrp x9, 380
0x100401a58 <+24>: add x9, x9, #1864
0x100401a5c <+28>: stur x0, [x29, #-8]
0x100401a60 <+32>: mov x1, x0
0x100401a64 <+36>: stur x1, [x29, #-16]
0x100401a68 <+40>: ldr x9, [x9]
0x100401a6c <+44>: ldr x1, [x8]
0x100401a70 <+48>: str x0, [sp, #24]
0x100401a74 <+52>: mov x0, x9
0x100401a78 <+56>: bl 0x1004505c8 ; symbol stub for: objc_msgSend
0x100401a7c <+60>: mov x29, x29
0x100401a80 <+64>: bl 0x10045061c ; symbol stub for: objc_retainAutoreleasedReturnValue
0x100401a84 <+68>: adrp x8, 371
0x100401a88 <+72>: add x1, x8, #4056
0x100401a8c <+76>: ldr x1, [x1]
0x100401a90 <+80>: mov x8, x0
0x100401a94 <+84>: str x0, [sp, #16]
0x100401a98 <+88>: mov x0, x8
0x100401a9c <+92>: bl 0x1004505c8 ; symbol stub for: objc_msgSend
0x100401aa0 <+96>: mov x29, x29
0x100401aa4 <+100>: bl 0x10045061c ; symbol stub for: objc_retainAutoreleasedReturnValue
0x100401aa8 <+104>: adrp x8, 379
0x100401aac <+108>: add x1, x8, #1632
0x100401ab0 <+112>: ldr x1, [x1]
0x100401ab4 <+116>: movz w2, #0x5
0x100401ab8 <+120>: str x0, [sp, #8]
0x100401abc <+124>: bl 0x1004505c8 ; symbol stub for: objc_msgSend
0x100401ac0 <+128>: ldr x0, [sp, #8] // Thread 1: signal SIGABRT
0x100401ac4 <+132>: bl 0x1004505ec ; symbol stub for: objc_release
0x100401ac8 <+136>: ldr x0, [sp, #16]
0x100401acc <+140>: bl 0x1004505ec ; symbol stub for: objc_release
0x100401ad0 <+144>: adrp x8, 379
0x100401ad4 <+148>: add x0, x8, #1752
0x100401ad8 <+152>: adrp x8, 694
0x100401adc <+156>: add x1, x8, #3200
0x100401ae0 <+160>: adrp x8, 694
0x100401ae4 <+164>: add x8, x8, #3196
0x100401ae8 <+168>: adrp x9, 694
0x100401aec <+172>: add x9, x9, #3192
0x100401af0 <+176>: adrp x10, 694
0x100401af4 <+180>: add x10, x10, #3188
0x100401af8 <+184>: orr w2, wzr, #0x1
0x100401afc <+188>: adrp x11, 694
0x100401b00 <+192>: add x11, x11, #3187
0x100401b04 <+196>: movz w12, #0
0x100401b08 <+200>: adrp x13, 694
0x100401b0c <+204>: add x13, x13, #3186
0x100401b10 <+208>: adrp x14, 694
0x100401b14 <+212>: add x14, x14, #3185
0x100401b18 <+216>: strb w12, [x14]
0x100401b1c <+220>: strb w12, [x13]
0x100401b20 <+224>: strb w2, [x11]
0x100401b24 <+228>: ldr x11, [sp, #24]
0x100401b28 <+232>: ldr x13, [x11, #32]
0x100401b2c <+236>: ldr s0, [x10]
0x100401b30 <+240>: ldr w2, [x9]
0x100401b34 <+244>: ldrb w12, [x8]
0x100401b38 <+248>: uxtb w3, w12
0x100401b3c <+252>: ldr x4, [x1]
0x100401b40 <+256>: ldr x1, [x0]
0x100401b44 <+260>: mov x0, x13
0x100401b48 <+264>: bl 0x1004505c8 ; symbol stub for: objc_msgSend
0x100401b4c <+268>: mov sp, x29
0x100401b50 <+272>: ldp x29, x30, [sp], #16
0x100401b54 <+276>: ret
控制台错误显示为：
2016-02-17 14:56:14.683 <Project Name>[4038:2623242] -[<Project Name>.BookingDetailViewController emvTransactionMessage:]: unrecognized selector sent to instance 0x15810fc00
2016-02-17 14:56:14.686 <Project Name>[4038:2623242] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[<Project Name>.BookingDetailViewController emvTransactionMessage:]: unrecognized selector sent to instance 0x15810fc00'
*** First throw call stack:
(0x180c39900 0x1802a7f80 0x180c4061c 0x180c3d3e8 0x180b4168c 0x100401ac0 0x10250dbf0 0x10250dbb0 0x102513658 0x180bf0bb0 0x180beea18 0x180b1d680 0x18202c088 0x185994d90 0x10010ad1c 0x1806be8b8)
libc++abi.dylib: terminating with uncaught exception of type NSException
我已经尝试了我常用的调试方法，而且我在这里使用绳索，所以我试图找出这个日志。 [IDTechEMV swipeMSRData:]_block_invoke是否表明这在IDTechEMV方法调用中崩溃了？我可以断定框架本身搞砸了吗？
答案 0 :(得分：1)
在崩溃日志中，您的emvTransactionMessage:正在尝试调用函数BookingDetailViewController，但无法识别该函数。
这通常是在输入选择器时由拼写错误引起的。检查您的emvTransactionMessage:是否确实有函数$ diskutil list需要函数调用中的参数。