我试图在托管-非托管混合代码中找到实际的异常。
问题是我有一个 .Net 类,它捕获所有未处理的异常,然后创建一个转储,因此当我查看转储时,存在混合的托管-非托管代码,并且我无法真正获取实际的非托管异常。
更糟糕的是,.Net 似乎有自己的例外,所以!分析-v给了我这个例外。
所以,这就是我所拥有的:
我可以找到异常发生的位置(通过查找1003f字),然后做.cxr到达代码中的实际位置。
当我执行 !dumpstack 时,我得到类似的信息:
//My module stuff and then:
122bf71c 08bf5242 (MethodDesc 0x4bf71ac +0x5a <Module>.dbg.NativeExceptionHandler())
122bf734 08bf5242 (MethodDesc 0x4bf71ac +0x5a <Module>.dbg.NativeExceptionHandler())
122bf73c 08bf51ce (MethodDesc 0x4bf71dc +0x6 <Module>.dbg.OnUnhandledNativeException(_EXCEPTION_POINTERS*)), calling (MethodDesc 0x4bf71ac +0 <Module>.dbg.NativeExceptionHandler())
122bf75c 08bf51ce (MethodDesc 0x4bf71dc +0x6 <Module>.dbg.OnUnhandledNativeException(_EXCEPTION_POINTERS*)), calling (MethodDesc 0x4bf71ac +0 <Module>.dbg.NativeExceptionHandler())
122bf760 3944bf15 3944bf15
122bf778 7c35f0c3 msvcr71!__CxxUnhandledExceptionFilter+0x46, calling 091f15a2
122bf784 7c864191 kernel32!UnhandledExceptionFilter+0x1c7
122bf7ac 7c812afb kernel32!RaiseException+0x53, calling ntdll!RtlRaiseException
122bf7f4 7857df60 msvcr90!_CxxThrowException+0x48 [f:\prebuild\eh\throw.cpp:161], calling kernel32!RaiseException
122bf828 785436c5 msvcr90!__set_flsgetvalue+0xf [f:\src\tidtable.c:256], calling kernel32!TlsGetValue
122bf834 785438b3 msvcr90!_getptd_noexit+0x74 [f:\src\tidtable.c:616], calling ntdll!RtlSetLastWin32Error
122bf844 785438c5 msvcr90!_getptd+0x8 [f:\src\tidtable.c:641], calling msvcr90!_getptd_noexit [f:\src\tidtable.c:566]
122bf84c 7857c98c msvcr90!__FrameUnwindToState+0xd9 [f:\prebuild\eh\frame.cpp:1161], calling msvcr90!_getptd [f:\src\tidtable.c:640]
122bf850 7857c972 msvcr90!__FrameUnwindToState+0xbf [f:\prebuild\eh\frame.cpp:1182], calling msvcr90!__SEH_epilog4
122bf860 785436c5 msvcr90!__set_flsgetvalue+0xf [f:\src\tidtable.c:256], calling kernel32!TlsGetValue
122bf870 785436c5 msvcr90!__set_flsgetvalue+0xf [f:\src\tidtable.c:256], calling kernel32!TlsGetValue
122bf87c 785438b3 msvcr90!_getptd_noexit+0x74 [f:\src\tidtable.c:616], calling ntdll!RtlSetLastWin32Error
122bf88c 785438c5 msvcr90!_getptd+0x8 [f:\src\tidtable.c:641], calling msvcr90!_getptd_noexit [f:\src\tidtable.c:566]
122bf894 7857d06a msvcr90!CallCatchBlock+0x148 [f:\prebuild\eh\frame.cpp:1503], calling msvcr90!_getptd [f:\src\tidtable.c:640]
122bf898 7857d03c msvcr90!CallCatchBlock+0x11a [f:\prebuild\eh\frame.cpp:1520], calling msvcr90!__SEH_epilog4
122bf8e8 7857d03c msvcr90!CallCatchBlock+0x11a [f:\prebuild\eh\frame.cpp:1520], calling msvcr90!__SEH_epilog4
122bf8ec 7857d486 msvcr90!CatchIt+0x5e [f:\prebuild\eh\frame.cpp:1275], calling msvcr90!CallCatchBlock [f:\prebuild\eh\frame.cpp:1433]
122bf91c 7857d576 msvcr90!FindHandlerForForeignException+0xdb [f:\prebuild\eh\frame.cpp:976], calling msvcr90!CatchIt [f:\prebuild\eh\frame.cpp:1219]
122bf950 785436c5 msvcr90!__set_flsgetvalue+0xf [f:\src\tidtable.c:256], calling kernel32!TlsGetValue
122bf95c 785438b3 msvcr90!_getptd_noexit+0x74 [f:\src\tidtable.c:616], calling ntdll!RtlSetLastWin32Error
122bf96c 785438c5 msvcr90!_getptd+0x8 [f:\src\tidtable.c:641], calling msvcr90!_getptd_noexit [f:\src\tidtable.c:566]
122bf974 7857d8c8 msvcr90!FindHandler+0x334 [f:\prebuild\eh\frame.cpp:879], calling msvcr90!_getptd [f:\src\tidtable.c:640]
122bf988 785436c5 msvcr90!__set_flsgetvalue+0xf [f:\src\tidtable.c:256], calling kernel32!TlsGetValue
122bf994 785438b3 msvcr90!_getptd_noexit+0x74 [f:\src\tidtable.c:616], calling ntdll!RtlSetLastWin32Error
122bf998 7c910323 ntdll!RtlpImageNtHeader+0x56, calling ntdll!_SEH_epilog
122bf9b0 7c90d98a ntdll!NtQueryVirtualMemory+0xc
122bf9b4 7c880b54 kernel32!_ValidateEH3RN+0xb6, calling ntdll!ZwQueryVirtualMemory
122bf9f4 7c83ab50 kernel32!BaseThreadStart+0x4d, calling kernel32!UnhandledExceptionFilter
122bf9fc 7c839b39 kernel32!_except_handler3+0x61
122bfa24 7c9032a8 ntdll!ExecuteHandler2+0x26
122bfa48 7c90327a ntdll!ExecuteHandler+0x24, calling ntdll!ExecuteHandler2
122bfa6c 7c92aa0f ntdll!RtlDispatchException+0xb1, calling ntdll!RtlpExecuteHandlerForException
122bfa98 78591795 msvcr90!_except_handler3+0x69
122bfac0 7c9032a8 ntdll!ExecuteHandler2+0x26
122bfae4 7c90327a ntdll!ExecuteHandler+0x24, calling ntdll!ExecuteHandler2
122bfaf8 7c90e48a ntdll!KiUserExceptionDispatcher+0xe, calling ntdll!RtlDispatchException
122bfdf8 064fdd84 MyModule!Class::MyFunction::Update+0xe4 [c:\MyCode.cpp:12345] ====> Exception cxr@122bfb2c
122bfb60 7c910222 ntdll!RtlpAllocateFromHeapLookaside+0x42, calling ntdll!_SEH_epilog
无论如何,事实是,我无法得到实际的异常。我知道这是一个标准异常,但我不确定是哪一个(在该行代码中没有自定义异常,并且许多事情可能出了问题)。