Cocoa App 크래시 타사 API 호출

Question

제 3 자 API를 호출하는 곳에서 내 Cocoa Objective-C 앱 (XCode)이 가끔 충돌합니다. 나는 이것이 메모리 누출이나 뭔가라고 생각한다. 내 프로그램이 될 부분, 타사 API 및 충돌 로그를 첨부합니다.

Please help to give me pointers on how I can solve this. Thanks a lot! 

My code: 

. 
. 
. 
    uint8_t InfoProg[4];//10 
    uint8_t nInfoProg = 4;//10 
    uint8_t ret; 
    NSString *result; 
    NSLog(@"***Calling GetConnectedProgramers***"); 
    ret = GetConnectedProgrammers(InfoProg, nInfoProg); // The part where it crashes sometimes 
. 
. 
. 


3rd party API function: 

/** 
GET INFO ON CONNECTED USB PROGRAMMERS 
reports back the number of connected USB programmer devices on the host 

@param InfoProg 
     points to the memory that will be filled with the info on the connected 
     USB programmers; 
     it is the responsibility of the application to allocate this memory 
     and to size it sufficiently. This should be an buffer with at least 8 bytes. 
     InfoProg[x] = 0; no USB programmer allocated to that number 
     InfoProg[x] = 1; USB programmer allocated to that number = USB programmer available 
@param nInfoProg 
     is the number of requested data structures 
@return  
     is the number of programmers connected 
*/ 
uint8_t GetConnectedProgrammers (uint8_t *InfoProg, uint8_t nInfoProg); 

Crash Report: 

Process:   FCT_MACOS [575] 
Path:   /Virgo_FG2_EVT/FCT_MACOS3p55c.app/Contents/MacOS/FCT_MACOS 
Identifier:  com.TopTest.FCTMACOS 
Version:   3.55c (3.55c) 
Code Type:  X86 (Native) 
Parent Process: launchd [132] 

Date/Time:  2012-08-03 10:34:35.151 +0800 
OS Version:  Mac OS X 10.7.3 (11D2001) 
Report Version: 9 

Interval Since Last Report:   16921 sec 
Crashes Since Last Report:   3 
Per-App Interval Since Last Report: 5164 sec 
Per-App Crashes Since Last Report: 3 
Anonymous UUID:      22314E10-99B9-4989-A2E8-53631295027B 

Crashed Thread: 4 

Exception Type: EXC_BAD_ACCESS (SIGBUS) 
Exception Codes: KERN_PROTECTION_FAILURE at 0x00000000000005a5 

VM Regions Near 0x5a5: 
--> __PAGEZERO    0000000000000000-0000000000001000 [ 4K] ---/--- SM=NUL /Virgo_FG2_EVT/FCT_MACOS3p55c.app/Contents/MacOS/FCT_MACOS 
    VM_ALLOCATE   0000000000001000-0000000000013000 [ 72K] ---/--- SM=NUL 

Application Specific Information: 
objc_msgSend() selector name: isEqual: 
objc[575]: garbage collection is OFF 

Thread 0:: Dispatch queue: com.apple.main-thread 
0 libsystem_kernel.dylib   0x964edc22 mach_msg_trap + 10 
1 libsystem_kernel.dylib   0x964ed1f6 mach_msg + 70 
2 com.apple.CoreFoundation  0x9677ec7a __CFRunLoopServiceMachPort + 170 
3 com.apple.CoreFoundation  0x96787da4 __CFRunLoopRun + 1428 
4 com.apple.CoreFoundation  0x9678747c CFRunLoopRunSpecific + 332 
5 com.apple.CoreFoundation  0x96787328 CFRunLoopRunInMode + 120 
6 com.apple.HIToolbox    0x9973417f RunCurrentEventLoopInMode + 318 
7 com.apple.HIToolbox    0x9973b4e7 ReceiveNextEventCommon + 381 
8 com.apple.HIToolbox    0x9973b356 BlockUntilNextEventMatchingListInMode + 88 
9 com.apple.AppKit    0x957dfa9c _DPSNextEvent + 678 
10 com.apple.AppKit    0x957df306 -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 113 
11 com.apple.AppKit    0x957db675 -[NSApplication run] + 911 
12 com.apple.AppKit    0x95a6f261 NSApplicationMain + 1054 
13 com.TopTest.FCTMACOS   0x00014055 start + 53 

Thread 1:: Dispatch queue: com.apple.libdispatch-manager 
0 libsystem_kernel.dylib   0x964f090a kevent + 10 
1 libdispatch.dylib    0x97c1dc58 _dispatch_mgr_invoke + 969 
2 libdispatch.dylib    0x97c1c6a7 _dispatch_mgr_thread + 53 

Thread 2: 
0 libsystem_kernel.dylib   0x964f0ef2 __sem_wait + 10 
1 com.ni.framework.nipalu   0x001ebd0b tTimerTimeWasterSleep::sleep(u64, tTimerTimeUnit, long*) const + 3019 
2 com.ni.framework.NI4882   0x06cad33c WaitSRQ + 99996 
3 com.ni.framework.nipalu   0x001edc78 tThreadUtility::getCurrentThreadId() + 104 
4 libsystem_c.dylib    0x918aeed9 _pthread_start + 335 
5 libsystem_c.dylib    0x918b26de thread_start + 34 

Thread 3: 
0 libsystem_kernel.dylib   0x964edc22 mach_msg_trap + 10 
1 libsystem_kernel.dylib   0x964ed1f6 mach_msg + 70 
2 com.apple.framework.IOKit  0x982f92df io_connect_method + 465 
3 com.apple.framework.IOKit  0x982a9f21 IOConnectCallMethod + 559 
4 com.apple.framework.IOKit  0x982aa21b IOConnectCallStructMethod + 84 
5 com.ni.framework.nipalu   0x001f11f1 tThreadUtility::yield(iThreadController*, long*) + 12993 
6 com.ni.framework.nipalu   0x001ec4b3 tTimerTimeWasterSleep::sleep(u64, tTimerTimeUnit, long*) const + 4979 
7 com.ni.framework.NI4882   0x06c9940a WaitSRQ + 18282 
8 com.ni.framework.nipalu   0x001edc78 tThreadUtility::getCurrentThreadId() + 104 
9 libsystem_c.dylib    0x918aeed9 _pthread_start + 335 
10 libsystem_c.dylib    0x918b26de thread_start + 34 

Thread 4 Crashed: 
0 libobjc.A.dylib     0x915bcd47 objc_msgSend + 23 
1 com.apple.CoreFoundation  0x9675b57a CFEqual + 154 
2 com.apple.framework.IOKit  0x982cbc80 IOHIDDeviceUnscheduleFromRunLoop + 29 
3 com.TopTest.FCTMACOS   0x0008dee2 closeAll + 66 
4 com.apple.CoreFoundation  0x967ea298 -[NSObject performSelector:withObject:withObject:] + 72 
5 com.TopTest.FCTMACOS   0x000213ff -[TestViewController threadRunTest:] + 2593 
6 com.apple.Foundation   0x97ddbe59 -[NSThread main] + 45 
7 com.apple.Foundation   0x97ddbe09 __NSThread__main__ + 1582 
8 libsystem_c.dylib    0x918aeed9 _pthread_start + 335 
9 libsystem_c.dylib    0x918b26de thread_start + 34 

Thread 5: 
0 libsystem_kernel.dylib   0x964f002e __workq_kernreturn + 10 
1 libsystem_c.dylib    0x918b0ccf _pthread_wqthread + 773 
2 libsystem_c.dylib    0x918b26fe start_wqthread + 30 

Thread 6: 
0 libsystem_kernel.dylib   0x964f002e __workq_kernreturn + 10 
1 libsystem_c.dylib    0x918b0ccf _pthread_wqthread + 773 
2 libsystem_c.dylib    0x918b26fe start_wqthread + 30 

Thread 7: 
0 libsystem_kernel.dylib   0x964f002e __workq_kernreturn + 10 
1 libsystem_c.dylib    0x918b0ccf _pthread_wqthread + 773 
2 libsystem_c.dylib    0x918b26fe start_wqthread + 30 

Thread 8: 
0 libsystem_kernel.dylib   0x964f002e __workq_kernreturn + 10 
1 libsystem_c.dylib    0x918b0ccf _pthread_wqthread + 773 
2 libsystem_c.dylib    0x918b26fe start_wqthread + 30 

Thread 9: 
0 libsystem_kernel.dylib   0x964f002e __workq_kernreturn + 10 
1 libsystem_c.dylib    0x918b0ccf _pthread_wqthread + 773 
2 libsystem_c.dylib    0x918b26fe start_wqthread + 30 

Thread 10: 
0 libsystem_kernel.dylib   0x964efbb2 __semwait_signal + 10 
1 libsystem_c.dylib    0x918637b9 nanosleep$UNIX2003 + 187 
2 com.apple.Foundation   0x97e1c05f +[NSThread sleepForTimeInterval:] + 170 
3 com.TopTest.FCTMACOS   0x0006cbd7 -[RS232 threadB139RS232Read:] + 223 
4 com.apple.Foundation   0x97ddbe59 -[NSThread main] + 45 
5 com.apple.Foundation   0x97ddbe09 __NSThread__main__ + 1582 
6 libsystem_c.dylib    0x918aeed9 _pthread_start + 335 
7 libsystem_c.dylib    0x918b26de thread_start + 34 

Thread 4 crashed with X86 Thread State (32-bit): 
    eax: 0x78690d00 ebx: 0xac7d8724 ecx: 0x96128a48 edx: 0x00000585 
    edi: 0x7868cc80 esi: 0x78615800 ebp: 0xb0102c18 esp: 0xb0102bf8 
    ss: 0x00000023 efl: 0x00010206 eip: 0x915bcd47 cs: 0x0000001b 
    ds: 0x00000023 es: 0x00000023 fs: 0x00000023 gs: 0x0000000f 
    cr2: 0x000005a5 
Logical CPU: 2 

... 워드 프로세서

Answer 1

;

@param InfoProg 
This should be an buffer with at least 8 bytes. 

하지만

uint8_t InfoProg[4]; 

은 4 uint8_t (바이트)로 구성된다. 버퍼를 늘려보십시오.