MFC42U.dll 崩溃，ExceptionCode: c0000005 (Access violation)

用MFC开发的应用软件，发生崩溃。
系统事件记录信息如下：
错误模块名称：MFC42U.DLL，版本：6.6.8063.0，时间戳：0x4ce7b886
异常代码：0xc0000005
错误偏移量：0x0001c62bDump文件分析结果如下：
0:000> !analyze -v
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*                        Exception Analysis                                   *
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********************************************************************************** ERROR: Symbol file could not be found.  Defaulted to export symbols for cufft32_50_35.dll - 
GetUrlPageData2 (WinHttp) failed: 12002.DUMP_CLASS: 2DUMP_QUALIFIER: 400FAULTING_IP: 
ntdll!_RtlUserThreadStart+1b
774037c8 cc              int     3EXCEPTION_RECORD:  0012f840 -- (.exr 0x12f840)
ExceptionAddress: 719987b1 (mfc42u!AfxWndProc+0x00000029)
   ExceptionCode: c0000005 (Access violation)
  ExceptionFlags: 00000000
NumberParameters: 2
   Parameter[0]: 00000000
   Parameter[1]: 025d2d60
Attempt to read from address 025d2d60FAULTING_THREAD:  000015f0DEFAULT_BUCKET_ID:  STATUS_BREAKPOINTPROCESS_NAME:  GUIMgr.exeERROR_CODE: (NTSTATUS) 0x80000003 - {EXCEPTION_CODE: (NTSTATUS) 0x80000003 (2147483651) - {EXCEPTION_CODE_STR:  80000003WATSON_BKT_PROCSTAMP:  58c751e1WATSON_BKT_PROCVER:  1.0.0.15PROCESS_VER_PRODUCT:  NMS NeuVision DR IIIWATSON_BKT_MODULE:  unknownWATSON_BKT_MODVER:  0.0.0.0WATSON_BKT_MODOFFSET:  0WATSON_BKT_MODSTAMP:  bbbbbbb4BUILD_VERSION_STRING:  6.1.7601.17514 (win7sp1_rtm.101119-1850)MODLIST_WITH_TSCHKSUM_HASH:  620ccc7cdf1d9f13d868b9362fcef46eed6749b9MODLIST_SHA1_HASH:  a1a579dab9f6da6e7c84d652ed200dad749e5514NTGLOBALFLAG:  0APPLICATION_VERIFIER_FLAGS:  0PRODUCT_TYPE:  1SUITE_MASK:  336DUMP_FLAGS:  c07DUMP_TYPE:  0ANALYSIS_SESSION_HOST:  DESKTOP-QFIDE1TANALYSIS_SESSION_TIME:  03-16-2017 19:52:37.0875ANALYSIS_VERSION: 10.0.14321.1024 x86freCONTEXT:  0012f85c -- (.cxr 0x12f85c)
eax=025d2d40 ebx=00000000 ecx=02583730 edx=29c6ce80 esi=000313ae edi=0000001c
eip=774037c8 esp=0012ffdc ebp=0012ffec iopl=0         nv up ei pl nz na po nc
cs=001b  ss=0023  ds=0023  es=0023  fs=003b  gs=0000             efl=00010202
ntdll!_RtlUserThreadStart+0x1b:
774037c8 cc              int     3
Resetting default scopeFOLLOWUP_IP: 
ntdll!_RtlUserThreadStart+1b
774037c8 cc              int     3READ_ADDRESS:  025d2d60 BUGCHECK_STR:  STATUS_BREAKPOINTTHREAD_ATTRIBUTES: 
OS_LOCALE:  CHSPROBLEM_CLASSES: 
    Tid    [0x0]
    Frame  [0x00]
    String [STATUS_BREAKPOINT]
    Data Bucketing
LAST_CONTROL_TRANSFER:  from 00000000 to 774037c8STACK_TEXT:  
0012ffec 00000000 0046ad28 7ffd3000 00000000 ntdll!_RtlUserThreadStart+0x1b
STACK_COMMAND:  .cxr 12f85c ; kb ; .cxr 0x12f85c ; kbTHREAD_SHA1_HASH_MOD_FUNC:  7c988acdf3188b3f594f31262124174034535ddeTHREAD_SHA1_HASH_MOD_FUNC_OFFSET:  2834fec2684cd8d8c7cc308113bb72d56c37d2f2THREAD_SHA1_HASH_MOD:  4d6a592812b1f521b481ecb6f54e3789559d0477FAULT_INSTR_CODE:  909090ccSYMBOL_STACK_INDEX:  0SYMBOL_NAME:  ntdll!_RtlUserThreadStart+1bFOLLOWUP_NAME:  MachineOwnerMODULE_NAME: ntdllIMAGE_NAME:  ntdll.dllDEBUG_FLR_IMAGE_TIMESTAMP:  4ce7b96eBUCKET_ID:  STATUS_BREAKPOINT_ntdll!_RtlUserThreadStart+1bPRIMARY_PROBLEM_CLASS:  STATUS_BREAKPOINT_ntdll!_RtlUserThreadStart+1bFAILURE_EXCEPTION_CODE:  80000003FAILURE_IMAGE_NAME:  ntdll.dllBUCKET_ID_IMAGE_STR:  ntdll.dllFAILURE_MODULE_NAME:  ntdllBUCKET_ID_MODULE_STR:  ntdllFAILURE_FUNCTION_NAME:  _RtlUserThreadStartBUCKET_ID_FUNCTION_STR:  _RtlUserThreadStartBUCKET_ID_OFFSET:  1bBUCKET_ID_MODTIMEDATESTAMP:  4ce7b96eBUCKET_ID_MODCHECKSUM:  1490d9BUCKET_ID_MODVER_STR:  6.1.7601.17514BUCKET_ID_PREFIX_STR:  STATUS_BREAKPOINT_FAILURE_PROBLEM_CLASS:  STATUS_BREAKPOINTFAILURE_SYMBOL_NAME:  ntdll.dll!_RtlUserThreadStartFAILURE_BUCKET_ID:  STATUS_BREAKPOINT_80000003_ntdll.dll!_RtlUserThreadStartWATSON_STAGEONE_URL:  http://watson.microsoft.com/StageOne/GUIMgr.exe/1.0.0.15/58c751e1/unknown/0.0.0.0/bbbbbbb4/80000003/00000000.htm?Retriage=1TARGET_TIME:  2017-03-15T06:05:18.000ZOSBUILD:  7601OSSERVICEPACK:  17514SERVICEPACK_NUMBER: 0OS_REVISION: 0OSPLATFORM_TYPE:  x86OSNAME:  Windows 7OSEDITION:  Windows 7 WinNt (Service Pack 1) EmbeddedNT SingleUserTSUSER_LCID:  0OSBUILD_TIMESTAMP:  2010-11-20 20:02:55BUILDDATESTAMP_STR:  101119-1850BUILDLAB_STR:  win7sp1_rtmBUILDOSVER_STR:  6.1.7601.17514ANALYSIS_SESSION_ELAPSED_TIME: 9b67ANALYSIS_SOURCE:  UMFAILURE_ID_HASH_STRING:  um:status_breakpoint_80000003_ntdll.dll!_rtluserthreadstartFAILURE_ID_HASH:  {a1fc1684-bea8-193f-aedf-2b02aa4571a3}Followup:     MachineOwner
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