Delphi 程序中的访问冲突找不到任何线索
Access Violation in Delphi Program can't find any clue
我在一些客户那里有一个 Delphi 应用程序我遇到了访问冲突，但我无法在几个不同的系统上重现它。还有一个客户有 2 台相同的计算机，在一台上发生在另一台上。
当使用一些第 3 方组件（但我也尝试更新它们）打开表单时会发生异常，该表单是从另一个表单继承的。
使用 MadExcept 我得到了这个日志，但它似乎也没有帮助我。有人知道我接下来可以尝试什么吗？
exception class : EAccessViolation
exception message : Zugriffsverletzung bei Adresse 0064E033 in Modul 'MyProgram.exe'. Lesen von Adresse 5AC03580.
main thread (c):
0064e033 +003 MyProgram.exe Vcl.Controls TWinControl.HandleNeeded
0064e059 +005 MyProgram.exe Vcl.Controls TWinControl.GetHandle
00757f4d +16d MyProgram.exe Vcl.Forms TCustomForm.SetFocusedControl
0064ad51 +1cd MyProgram.exe Vcl.Controls TWinControl.WndProc
00f1f1ef +13b MyProgram.exe cxControls TcxControl.WndProc
0064a78c +02c MyProgram.exe Vcl.Controls TWinControl.MainWndProc
0054dd1c +014 MyProgram.exe System.Classes StdWndProc
77c40594 +034 ntdll.dll KiUserCallbackDispatcher
00755490 +1a0 MyProgram.exe Vcl.Forms TCustomForm.WndProc
00b54029 +03d MyProgram.exe Frm_MDIChildVorlage 1092 +15 TForm_MDIChildVorlage.WndProc
0064a78c +02c MyProgram.exe Vcl.Controls TWinControl.MainWndProc
0054dd1c +014 MyProgram.exe System.Classes StdWndProc
77c40594 +034 ntdll.dll KiUserCallbackDispatcher
777ad6c0 +090 USER32.dll CallWindowProcW
0075596a +03a MyProgram.exe Vcl.Forms Default
00755b95 +1d9 MyProgram.exe Vcl.Forms TCustomForm.ClientWndProc
0054dd1c +014 MyProgram.exe System.Classes StdWndProc
777ad6c0 +090 USER32.dll CallWindowProcW
02302e82 +0ea MyProgram.exe Frm_MainVorlage 1251 +22 TForm_MainVorlage.ClientWndProc
0054dd1c +014 MyProgram.exe System.Classes StdWndProc
777ad6c0 +090 USER32.dll CallWindowProcW
0084819e +2d6 MyProgram.exe AdvMenus 2933 +63 MDIClientWndProc
77c40594 +034 ntdll.dll KiUserCallbackDispatcher
777c8f63 +013 USER32.dll DefMDIChildProcW
777ad6c0 +090 USER32.dll CallWindowProcW
0064b27e +0e6 MyProgram.exe Vcl.Controls TWinControl.DefaultHandler
00757c46 +05a MyProgram.exe Vcl.Forms TCustomForm.DefaultHandler
0064662d +2bd MyProgram.exe Vcl.Controls TControl.WndProc
0064b16d +5e9 MyProgram.exe Vcl.Controls TWinControl.WndProc
0075591c +62c MyProgram.exe Vcl.Forms TCustomForm.WndProc
00b54029 +03d MyProgram.exe Frm_MDIChildVorlage 1092 +15 TForm_MDIChildVorlage.WndProc
0064a78c +02c MyProgram.exe Vcl.Controls TWinControl.MainWndProc
0054dd1c +014 MyProgram.exe System.Classes StdWndProc
77c40594 +034 ntdll.dll KiUserCallbackDispatcher
777ad6c0 +090 USER32.dll CallWindowProcW
0075596a +03a MyProgram.exe Vcl.Forms Default
00755b95 +1d9 MyProgram.exe Vcl.Forms TCustomForm.ClientWndProc
0054dd1c +014 MyProgram.exe System.Classes StdWndProc
777ad6c0 +090 USER32.dll CallWindowProcW
02302e82 +0ea MyProgram.exe Frm_MainVorlage 1251 +22 TForm_MainVorlage.ClientWndProc
0054dd1c +014 MyProgram.exe System.Classes StdWndProc
777ad6c0 +090 USER32.dll CallWindowProcW
0084819e +2d6 MyProgram.exe AdvMenus 2933 +63 MDIClientWndProc
77c40594 +034 ntdll.dll KiUserCallbackDispatcher
777b2b34 +134 USER32.dll SendMessageW
00757bd2 +042 MyProgram.exe Vcl.Forms TCustomForm.DestroyWindowHandle
007544d7 +073 MyProgram.exe Vcl.Forms TCustomForm.Destroy
00409df0 +008 MyProgram.exe System 173 +0 TObject.Free
00759c74 +000 MyProgram.exe Vcl.Forms TCustomForm.CMRelease
0064662d +2bd MyProgram.exe Vcl.Controls TControl.WndProc
0064b16d +5e9 MyProgram.exe Vcl.Controls TWinControl.WndProc
0075591c +62c MyProgram.exe Vcl.Forms TCustomForm.WndProc
00b54029 +03d MyProgram.exe Frm_MDIChildVorlage 1092 +15 TForm_MDIChildVorlage.WndProc
0064a78c +02c MyProgram.exe Vcl.Controls TWinControl.MainWndProc
0054dd1c +014 MyProgram.exe System.Classes StdWndProc
777aa67b +00b USER32.dll DispatchMessageW
0075ef77 +0f3 MyProgram.exe Vcl.Forms TApplication.ProcessMessage
0075efba +00a MyProgram.exe Vcl.Forms TApplication.HandleMessage
0075f2ed +0c9 MyProgram.exe Vcl.Forms TApplication.Run
02371231 +241 MyProgram.exe REPDOC_Main 1003 +53 initialization
754e7c02 +022 KERNEL32.DLL BaseThreadInitThunk
thread c:
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
thread fc:
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
thread dc:
75e02d54 +24 KERNELBASE.dll GetQueuedCompletionStatus
004b42ad +0d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +32 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
>> created by main thread (c) at:
623ac11a +00 libcef.dll
thread 50:
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
thread $ca4:
75e02d54 +24 KERNELBASE.dll GetQueuedCompletionStatus
004b42ad +0d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +32 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
>> created by main thread (c) at:
6137fc3b +00 libcef.dll
thread cc:
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
thread $bd4:
75dc2cc1 +b1 KERNELBASE.dll WaitForSingleObjectEx
75dc2bfd +0d KERNELBASE.dll WaitForSingleObject
004b42ad +0d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +32 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
>> created by main thread (c) at:
6137fc3b +00 libcef.dll
thread b8:
75dc2cc1 +b1 KERNELBASE.dll WaitForSingleObjectEx
75dc2bfd +0d KERNELBASE.dll WaitForSingleObject
004b42ad +0d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +32 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
>> created by main thread (c) at:
6137fc3b +00 libcef.dll
thread $ef8:
75dd28bd +000 KERNELBASE.dll WaitForMultipleObjectsEx
777adcbd +15d USER32.dll MsgWaitForMultipleObjectsEx
004b42ad +00d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +032 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +022 KERNEL32.DLL BaseThreadInitThunk
>> created by main thread (c) at:
6137fc3b +000 libcef.dll
thread 9c:
75dc2cc1 +b1 KERNELBASE.dll WaitForSingleObjectEx
75dc2bfd +0d KERNELBASE.dll WaitForSingleObject
004b42ad +0d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +32 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
>> created by main thread (c) at:
6137fc3b +00 libcef.dll
thread 38:
75dc2cc1 +b1 KERNELBASE.dll WaitForSingleObjectEx
75dc2bfd +0d KERNELBASE.dll WaitForSingleObject
004b42ad +0d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +32 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
>> created by main thread (c) at:
6137fc3b +00 libcef.dll
thread $ac:
75e02d54 +24 KERNELBASE.dll GetQueuedCompletionStatus
004b42ad +0d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +32 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
>> created by main thread (c) at:
6137fc3b +00 libcef.dll
thread 94:
75e02d54 +24 KERNELBASE.dll GetQueuedCompletionStatus
004b42ad +0d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +32 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
>> created by main thread (c) at:
6137fc3b +00 libcef.dll
thread fc:
75dc2cc1 +b1 KERNELBASE.dll WaitForSingleObjectEx
75dc2bfd +0d KERNELBASE.dll WaitForSingleObject
004b42ad +0d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +32 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
>> created by thread 94 at:
6137fc3b +00 libcef.dll
thread 94:
77cbb56c +ac ntdll.dll RtlSleepConditionVariableCS
75e78d2a +1a KERNELBASE.dll SleepConditionVariableCS
004b42ad +0d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +32 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
>> created by main thread (c) at:
6137fc3b +00 libcef.dll
thread $d54:
75e02d54 +24 KERNELBASE.dll GetQueuedCompletionStatus
004b42ad +0d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +32 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
>> created by thread $ef8 at:
6137fc3b +00 libcef.dll
thread 4c:
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
thread $bbc:
75dd28bd +00 KERNELBASE.dll WaitForMultipleObjectsEx
004b42ad +0d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +32 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
>> created by main thread (c) at:
758c9e7e +00 combase.dll
thread $ee4: <priority:2>
777bd577 +47 USER32.dll GetMessageA
004b42ad +0d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +32 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
>> created by main thread (c) at:
6ad45607 +00 WINMM.dll
thread f4:
75dd28bd +00 KERNELBASE.dll WaitForMultipleObjectsEx
004b42ad +0d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +32 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
>> created by main thread (c) at:
7388e7bc +00 clr.dll
thread 0: <priority:2>
75dd28bd +00 KERNELBASE.dll WaitForMultipleObjectsEx
004b42ad +0d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +32 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
>> created by main thread (c) at:
7390be93 +00 clr.dll
thread $ecc:
75dc2b7d +4d KERNELBASE.dll SleepEx
004b42ad +0d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +32 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
>> created by main thread (c) at:
738bc074 +00 clr.dll
thread c:
75dc2cc1 +b1 KERNELBASE.dll WaitForSingleObjectEx
004b42ad +0d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +32 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
>> created by thread $ecc at:
7390be93 +00 clr.dll
thread 0:
75dc2cc1 +b1 KERNELBASE.dll WaitForSingleObjectEx
75dc2bfd +0d KERNELBASE.dll WaitForSingleObject
004b42ad +0d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +32 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
>> created by thread $ecc at:
738bc074 +00 clr.dll
thread 7c:
75dc2cc1 +b1 KERNELBASE.dll WaitForSingleObjectEx
004b42ad +0d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +32 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
>> created by thread c at:
7390be93 +00 clr.dll
thread $f68:
75dc2cc1 +b1 KERNELBASE.dll WaitForSingleObjectEx
004b42ad +0d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +32 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
>> created by thread c at:
7390be93 +00 clr.dll
thread $e9c:
75dc2cc1 +b1 KERNELBASE.dll WaitForSingleObjectEx
004b42ad +0d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +32 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
>> created by thread 7c at:
7390be93 +00 clr.dll
thread c:
75dd28bd +00 KERNELBASE.dll WaitForMultipleObjectsEx
004b42ad +0d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +32 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
>> created by main thread (c) at:
60ddcb57 +00 comsvcs.dll
thread fc:
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
thread 8:
75dc2cc1 +b1 KERNELBASE.dll WaitForSingleObjectEx
75dc2bfd +0d KERNELBASE.dll WaitForSingleObject
004b42ad +0d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +32 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
>> created by thread 94 at:
6137fc3b +00 libcef.dll
thread :
75e02d54 +24 KERNELBASE.dll GetQueuedCompletionStatus
004b42ad +0d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +32 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
>> created by main thread (c) at:
67b5280f +00 System.Data.dll
thread 18:
75dc2cc1 +0b1 KERNELBASE.dll WaitForSingleObjectEx
004b42ad +00d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +032 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +022 KERNEL32.DLL BaseThreadInitThunk
>> created by main thread (c) at:
6b863451 +241 rasman.dll RasAddNotification
thread c:
75dd28bd +00 KERNELBASE.dll WaitForMultipleObjectsEx
004b42ad +0d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +32 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
>> created by main thread (c) at:
7390be93 +00 clr.dll
thread c:
75dc2cc1 +b1 KERNELBASE.dll WaitForSingleObjectEx
75dc2bfd +0d KERNELBASE.dll WaitForSingleObject
004b42ad +0d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +32 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
>> created by main thread (c) at:
7562808b +6b msvcrt.dll _beginthreadex
thread 9c:
75dc2cc1 +b1 KERNELBASE.dll WaitForSingleObjectEx
75dc2bfd +0d KERNELBASE.dll WaitForSingleObject
004b42ad +0d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +32 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
>> created by main thread (c) at:
7562808b +6b msvcrt.dll _beginthreadex
thread $f80: <priority:-1>
75dd28bd +00 KERNELBASE.dll WaitForMultipleObjectsEx
004b42ad +0d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +32 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
>> created by main thread (c) at:
7562808b +6b msvcrt.dll _beginthreadex
thread 54:
75dd28bd +000 KERNELBASE.dll WaitForMultipleObjectsEx
777adcbd +15d USER32.dll MsgWaitForMultipleObjectsEx
004b42ad +00d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +032 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +022 KERNEL32.DLL BaseThreadInitThunk
>> created by main thread (c) at:
5dc09787 +000 MSHTML.dll
thread 7c: <priority:-1>
75dd28bd +00 KERNELBASE.dll WaitForMultipleObjectsEx
004b42ad +0d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +32 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
>> created by main thread (c) at:
7562808b +6b msvcrt.dll _beginthreadex
thread 98:
75dd28bd +000 KERNELBASE.dll WaitForMultipleObjectsEx
777adcbd +15d USER32.dll MsgWaitForMultipleObjectsEx
004b42ad +00d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +032 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +022 KERNEL32.DLL BaseThreadInitThunk
>> created by thread 54 at:
5dc09787 +000 MSHTML.dll
thread 10:
75dc2cc1 +b1 KERNELBASE.dll WaitForSingleObjectEx
75dc2bfd +0d KERNELBASE.dll WaitForSingleObject
004b42ad +0d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +32 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
>> created by main thread (c) at:
7562808b +6b msvcrt.dll _beginthreadex
thread 1c:
75dd28bd +000 KERNELBASE.dll WaitForMultipleObjectsEx
777adcbd +15d USER32.dll MsgWaitForMultipleObjectsEx
004b42ad +00d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +032 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +022 KERNEL32.DLL BaseThreadInitThunk
>> created by thread 54 at:
5dc09787 +000 MSHTML.dll
thread 1c:
75dc2cc1 +b1 KERNELBASE.dll WaitForSingleObjectEx
75dc2bfd +0d KERNELBASE.dll WaitForSingleObject
004b42ad +0d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +32 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
>> created by main thread (c) at:
5dc09787 +00 MSHTML.dll
thread $ad4: <priority:15>
75dd28bd +00 KERNELBASE.dll WaitForMultipleObjectsEx
754e7b83 +13 KERNEL32.DLL WaitForMultipleObjects
004b42ad +0d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +32 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
>> created by main thread (c) at:
5dc06f90 +00 MSHTML.dll
thread 34:
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
thread 10:
75dc2cc1 +b1 KERNELBASE.dll WaitForSingleObjectEx
004b42ad +0d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +32 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
>> created by thread $e9c at:
7390be93 +00 clr.dll
cpu registers:
eax = 5ac03308
ebx = 5ac03308
ecx = 2a59eaa5
edx = 00000000
esi = 5ac03308
edi = 119810fc
eip = 0064e033
esp = 0018e3e4
ebp = 0018e414
stack dump:
0018e3e4 08 33 c0 5a 5e e0 64 00 - 44 06 13 00 52 7f 75 00 .3.Z^.d.D...R.u.
0018e3f4 68 e4 18 00 04 b2 40 00 - 14 e4 18 00 da 00 b7 0f h.....@.........
0018e404 07 00 00 00 fc 10 98 11 - 07 00 00 00 c8 6f 9c 11 .............o..
0018e414 60 e4 18 00 57 ad 64 00 - 07 00 00 00 07 00 00 00 `...W.d.........
0018e424 cc a4 40 00 4c e4 18 00 - db a4 40 00 44 e4 18 00 ..@.L.....@.D...
0018e434 c8 6f 9c 11 1c ef c9 04 - c8 6f 9c 11 68 bf a9 16 .o.......o..h...
0018e444 98 e4 18 00 cd 9d 40 00 - a0 e4 18 00 c8 6f 9c 11 ......@......o..
0018e454 1c ef c9 04 d0 e4 18 00 - c8 6f 9c 11 98 e4 18 00 .........o......
0018e464 f4 f1 f1 00 a0 e4 18 00 - 04 b2 40 00 98 e4 18 00 ..........@.....
0018e474 07 00 00 00 c8 6f 9c 11 - 8b 96 7a 77 00 00 00 00 .....o....zw....
0018e484 00 00 00 00 29 0e 41 2a - 68 bf a9 16 d0 e4 18 00 ....).A*h.......
0018e494 c8 6f 9c 11 c8 e4 18 00 - 8f a7 64 00 ac e4 18 00 .o........d.....
0018e4a4 04 b2 40 00 c8 e4 18 00 - 90 e5 18 00 d4 af 40 00 ..@...........@.
0018e4b4 c8 e4 18 00 da 00 b7 0f - 07 00 00 00 00 00 00 00 ................
0018e4c4 c8 6f 9c 11 e0 e4 18 00 - 1e dd 54 00 07 00 00 00 .o........T.....
0018e4d4 ae 02 0a 00 00 00 00 00 - 00 00 00 00 0c e5 18 00 ................
0018e4e4 71 8e 7a 77 02 06 02 00 - 07 00 00 00 ae 02 0a 00 q.zw............
0018e4f4 00 00 00 00 07 00 00 00 - cd ab ba dc 00 00 00 00 ................
0018e504 da 00 b7 0f 07 00 00 00 - a0 e5 18 00 d1 90 7a 77 ..............zw
0018e514 da 00 b7 0f 02 06 02 00 - 07 00 00 00 ae 02 0a 00 ................
disassembling:
[...]
00b5401a call -5fcb (e054) ; Vcl.Controls.TWinControl.GetHandle
00b5401f push eax
00b54020 call -8f2d (b0f8) ; Winapi.Windows.PostMessage
00b54025 1092 mov edx, esi
00b54027 mov eax, ebx
00b54029 > call -fed3e (52f0) ; Vcl.Forms.TCustomForm.WndProc
00b5402e 1093 pop esi
00b5402f pop ebx
00b54030 ret
来自 madExcept 的堆栈跟踪顶部是：
0064e033 +003 MyProgram.exe Vcl.Controls TWinControl.HandleNeeded
您确实应该使用足够的信息来构建您的程序以获取行号信息，但碰巧 +003 就足够了。反汇编 TWinControl.HandleNeeded 是这样的：
Vcl.Controls.pas.12079: begin
005659FC 56 push esi
005659FD 8BF0 mov esi,eax
Vcl.Controls.pas.12080: if WindowHandle = 0 then
005659FF 83BE7802000000 cmp dword ptr [esi+[=10=]000278],[=10=]
00565A06 7516 jnz [=10=]565a1e
地址在您的程序中会有所不同，但要点是 005659FF - 005659FC 是偏移量 +003。所以异常在函数的第一行：
if WindowHandle = 0 then
唯一的内存访问是尝试读取实例字段 WindowHandle。
并且当读取实例字段失败时，通常意味着实例指针要么是nil，要么指向一个已经被销毁的实例。由于异常文本指出：
Lesen von Adresse 5AC03580
您知道该程序正在尝试读取地址 5AC03580。由于距离零很远，您知道实例指针不是 nil。所以，所有的迹象都指向一个已经被销毁的实例。
我们无法告诉您为什么您的实例已被销毁。现在调试它是你的工作。并且请不要像这里的许多提问者一样，期望我们说的比人类所能说的更多。有时问题的答案只是告诉你下一步该怎么做。
调试双重免费方案可能有点棘手，因为它们往往很滑。您不会总是遇到运行时异常。尝试使用启用了完整调试选项的 FastMM 之类的工具，其中包括尝试检测双重释放错误的工具。
我在一些客户那里有一个 Delphi 应用程序我遇到了访问冲突，但我无法在几个不同的系统上重现它。还有一个客户有 2 台相同的计算机，在一台上发生在另一台上。
当使用一些第 3 方组件（但我也尝试更新它们）打开表单时会发生异常，该表单是从另一个表单继承的。 使用 MadExcept 我得到了这个日志，但它似乎也没有帮助我。有人知道我接下来可以尝试什么吗？
exception class : EAccessViolation
exception message : Zugriffsverletzung bei Adresse 0064E033 in Modul 'MyProgram.exe'. Lesen von Adresse 5AC03580.
main thread (c):
0064e033 +003 MyProgram.exe Vcl.Controls TWinControl.HandleNeeded
0064e059 +005 MyProgram.exe Vcl.Controls TWinControl.GetHandle
00757f4d +16d MyProgram.exe Vcl.Forms TCustomForm.SetFocusedControl
0064ad51 +1cd MyProgram.exe Vcl.Controls TWinControl.WndProc
00f1f1ef +13b MyProgram.exe cxControls TcxControl.WndProc
0064a78c +02c MyProgram.exe Vcl.Controls TWinControl.MainWndProc
0054dd1c +014 MyProgram.exe System.Classes StdWndProc
77c40594 +034 ntdll.dll KiUserCallbackDispatcher
00755490 +1a0 MyProgram.exe Vcl.Forms TCustomForm.WndProc
00b54029 +03d MyProgram.exe Frm_MDIChildVorlage 1092 +15 TForm_MDIChildVorlage.WndProc
0064a78c +02c MyProgram.exe Vcl.Controls TWinControl.MainWndProc
0054dd1c +014 MyProgram.exe System.Classes StdWndProc
77c40594 +034 ntdll.dll KiUserCallbackDispatcher
777ad6c0 +090 USER32.dll CallWindowProcW
0075596a +03a MyProgram.exe Vcl.Forms Default
00755b95 +1d9 MyProgram.exe Vcl.Forms TCustomForm.ClientWndProc
0054dd1c +014 MyProgram.exe System.Classes StdWndProc
777ad6c0 +090 USER32.dll CallWindowProcW
02302e82 +0ea MyProgram.exe Frm_MainVorlage 1251 +22 TForm_MainVorlage.ClientWndProc
0054dd1c +014 MyProgram.exe System.Classes StdWndProc
777ad6c0 +090 USER32.dll CallWindowProcW
0084819e +2d6 MyProgram.exe AdvMenus 2933 +63 MDIClientWndProc
77c40594 +034 ntdll.dll KiUserCallbackDispatcher
777c8f63 +013 USER32.dll DefMDIChildProcW
777ad6c0 +090 USER32.dll CallWindowProcW
0064b27e +0e6 MyProgram.exe Vcl.Controls TWinControl.DefaultHandler
00757c46 +05a MyProgram.exe Vcl.Forms TCustomForm.DefaultHandler
0064662d +2bd MyProgram.exe Vcl.Controls TControl.WndProc
0064b16d +5e9 MyProgram.exe Vcl.Controls TWinControl.WndProc
0075591c +62c MyProgram.exe Vcl.Forms TCustomForm.WndProc
00b54029 +03d MyProgram.exe Frm_MDIChildVorlage 1092 +15 TForm_MDIChildVorlage.WndProc
0064a78c +02c MyProgram.exe Vcl.Controls TWinControl.MainWndProc
0054dd1c +014 MyProgram.exe System.Classes StdWndProc
77c40594 +034 ntdll.dll KiUserCallbackDispatcher
777ad6c0 +090 USER32.dll CallWindowProcW
0075596a +03a MyProgram.exe Vcl.Forms Default
00755b95 +1d9 MyProgram.exe Vcl.Forms TCustomForm.ClientWndProc
0054dd1c +014 MyProgram.exe System.Classes StdWndProc
777ad6c0 +090 USER32.dll CallWindowProcW
02302e82 +0ea MyProgram.exe Frm_MainVorlage 1251 +22 TForm_MainVorlage.ClientWndProc
0054dd1c +014 MyProgram.exe System.Classes StdWndProc
777ad6c0 +090 USER32.dll CallWindowProcW
0084819e +2d6 MyProgram.exe AdvMenus 2933 +63 MDIClientWndProc
77c40594 +034 ntdll.dll KiUserCallbackDispatcher
777b2b34 +134 USER32.dll SendMessageW
00757bd2 +042 MyProgram.exe Vcl.Forms TCustomForm.DestroyWindowHandle
007544d7 +073 MyProgram.exe Vcl.Forms TCustomForm.Destroy
00409df0 +008 MyProgram.exe System 173 +0 TObject.Free
00759c74 +000 MyProgram.exe Vcl.Forms TCustomForm.CMRelease
0064662d +2bd MyProgram.exe Vcl.Controls TControl.WndProc
0064b16d +5e9 MyProgram.exe Vcl.Controls TWinControl.WndProc
0075591c +62c MyProgram.exe Vcl.Forms TCustomForm.WndProc
00b54029 +03d MyProgram.exe Frm_MDIChildVorlage 1092 +15 TForm_MDIChildVorlage.WndProc
0064a78c +02c MyProgram.exe Vcl.Controls TWinControl.MainWndProc
0054dd1c +014 MyProgram.exe System.Classes StdWndProc
777aa67b +00b USER32.dll DispatchMessageW
0075ef77 +0f3 MyProgram.exe Vcl.Forms TApplication.ProcessMessage
0075efba +00a MyProgram.exe Vcl.Forms TApplication.HandleMessage
0075f2ed +0c9 MyProgram.exe Vcl.Forms TApplication.Run
02371231 +241 MyProgram.exe REPDOC_Main 1003 +53 initialization
754e7c02 +022 KERNEL32.DLL BaseThreadInitThunk
thread c:
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
thread fc:
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
thread dc:
75e02d54 +24 KERNELBASE.dll GetQueuedCompletionStatus
004b42ad +0d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +32 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
>> created by main thread (c) at:
623ac11a +00 libcef.dll
thread 50:
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
thread $ca4:
75e02d54 +24 KERNELBASE.dll GetQueuedCompletionStatus
004b42ad +0d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +32 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
>> created by main thread (c) at:
6137fc3b +00 libcef.dll
thread cc:
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
thread $bd4:
75dc2cc1 +b1 KERNELBASE.dll WaitForSingleObjectEx
75dc2bfd +0d KERNELBASE.dll WaitForSingleObject
004b42ad +0d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +32 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
>> created by main thread (c) at:
6137fc3b +00 libcef.dll
thread b8:
75dc2cc1 +b1 KERNELBASE.dll WaitForSingleObjectEx
75dc2bfd +0d KERNELBASE.dll WaitForSingleObject
004b42ad +0d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +32 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
>> created by main thread (c) at:
6137fc3b +00 libcef.dll
thread $ef8:
75dd28bd +000 KERNELBASE.dll WaitForMultipleObjectsEx
777adcbd +15d USER32.dll MsgWaitForMultipleObjectsEx
004b42ad +00d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +032 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +022 KERNEL32.DLL BaseThreadInitThunk
>> created by main thread (c) at:
6137fc3b +000 libcef.dll
thread 9c:
75dc2cc1 +b1 KERNELBASE.dll WaitForSingleObjectEx
75dc2bfd +0d KERNELBASE.dll WaitForSingleObject
004b42ad +0d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +32 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
>> created by main thread (c) at:
6137fc3b +00 libcef.dll
thread 38:
75dc2cc1 +b1 KERNELBASE.dll WaitForSingleObjectEx
75dc2bfd +0d KERNELBASE.dll WaitForSingleObject
004b42ad +0d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +32 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
>> created by main thread (c) at:
6137fc3b +00 libcef.dll
thread $ac:
75e02d54 +24 KERNELBASE.dll GetQueuedCompletionStatus
004b42ad +0d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +32 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
>> created by main thread (c) at:
6137fc3b +00 libcef.dll
thread 94:
75e02d54 +24 KERNELBASE.dll GetQueuedCompletionStatus
004b42ad +0d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +32 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
>> created by main thread (c) at:
6137fc3b +00 libcef.dll
thread fc:
75dc2cc1 +b1 KERNELBASE.dll WaitForSingleObjectEx
75dc2bfd +0d KERNELBASE.dll WaitForSingleObject
004b42ad +0d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +32 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
>> created by thread 94 at:
6137fc3b +00 libcef.dll
thread 94:
77cbb56c +ac ntdll.dll RtlSleepConditionVariableCS
75e78d2a +1a KERNELBASE.dll SleepConditionVariableCS
004b42ad +0d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +32 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
>> created by main thread (c) at:
6137fc3b +00 libcef.dll
thread $d54:
75e02d54 +24 KERNELBASE.dll GetQueuedCompletionStatus
004b42ad +0d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +32 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
>> created by thread $ef8 at:
6137fc3b +00 libcef.dll
thread 4c:
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
thread $bbc:
75dd28bd +00 KERNELBASE.dll WaitForMultipleObjectsEx
004b42ad +0d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +32 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
>> created by main thread (c) at:
758c9e7e +00 combase.dll
thread $ee4: <priority:2>
777bd577 +47 USER32.dll GetMessageA
004b42ad +0d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +32 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
>> created by main thread (c) at:
6ad45607 +00 WINMM.dll
thread f4:
75dd28bd +00 KERNELBASE.dll WaitForMultipleObjectsEx
004b42ad +0d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +32 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
>> created by main thread (c) at:
7388e7bc +00 clr.dll
thread 0: <priority:2>
75dd28bd +00 KERNELBASE.dll WaitForMultipleObjectsEx
004b42ad +0d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +32 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
>> created by main thread (c) at:
7390be93 +00 clr.dll
thread $ecc:
75dc2b7d +4d KERNELBASE.dll SleepEx
004b42ad +0d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +32 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
>> created by main thread (c) at:
738bc074 +00 clr.dll
thread c:
75dc2cc1 +b1 KERNELBASE.dll WaitForSingleObjectEx
004b42ad +0d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +32 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
>> created by thread $ecc at:
7390be93 +00 clr.dll
thread 0:
75dc2cc1 +b1 KERNELBASE.dll WaitForSingleObjectEx
75dc2bfd +0d KERNELBASE.dll WaitForSingleObject
004b42ad +0d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +32 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
>> created by thread $ecc at:
738bc074 +00 clr.dll
thread 7c:
75dc2cc1 +b1 KERNELBASE.dll WaitForSingleObjectEx
004b42ad +0d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +32 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
>> created by thread c at:
7390be93 +00 clr.dll
thread $f68:
75dc2cc1 +b1 KERNELBASE.dll WaitForSingleObjectEx
004b42ad +0d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +32 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
>> created by thread c at:
7390be93 +00 clr.dll
thread $e9c:
75dc2cc1 +b1 KERNELBASE.dll WaitForSingleObjectEx
004b42ad +0d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +32 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
>> created by thread 7c at:
7390be93 +00 clr.dll
thread c:
75dd28bd +00 KERNELBASE.dll WaitForMultipleObjectsEx
004b42ad +0d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +32 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
>> created by main thread (c) at:
60ddcb57 +00 comsvcs.dll
thread fc:
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
thread 8:
75dc2cc1 +b1 KERNELBASE.dll WaitForSingleObjectEx
75dc2bfd +0d KERNELBASE.dll WaitForSingleObject
004b42ad +0d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +32 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
>> created by thread 94 at:
6137fc3b +00 libcef.dll
thread :
75e02d54 +24 KERNELBASE.dll GetQueuedCompletionStatus
004b42ad +0d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +32 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
>> created by main thread (c) at:
67b5280f +00 System.Data.dll
thread 18:
75dc2cc1 +0b1 KERNELBASE.dll WaitForSingleObjectEx
004b42ad +00d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +032 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +022 KERNEL32.DLL BaseThreadInitThunk
>> created by main thread (c) at:
6b863451 +241 rasman.dll RasAddNotification
thread c:
75dd28bd +00 KERNELBASE.dll WaitForMultipleObjectsEx
004b42ad +0d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +32 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
>> created by main thread (c) at:
7390be93 +00 clr.dll
thread c:
75dc2cc1 +b1 KERNELBASE.dll WaitForSingleObjectEx
75dc2bfd +0d KERNELBASE.dll WaitForSingleObject
004b42ad +0d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +32 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
>> created by main thread (c) at:
7562808b +6b msvcrt.dll _beginthreadex
thread 9c:
75dc2cc1 +b1 KERNELBASE.dll WaitForSingleObjectEx
75dc2bfd +0d KERNELBASE.dll WaitForSingleObject
004b42ad +0d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +32 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
>> created by main thread (c) at:
7562808b +6b msvcrt.dll _beginthreadex
thread $f80: <priority:-1>
75dd28bd +00 KERNELBASE.dll WaitForMultipleObjectsEx
004b42ad +0d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +32 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
>> created by main thread (c) at:
7562808b +6b msvcrt.dll _beginthreadex
thread 54:
75dd28bd +000 KERNELBASE.dll WaitForMultipleObjectsEx
777adcbd +15d USER32.dll MsgWaitForMultipleObjectsEx
004b42ad +00d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +032 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +022 KERNEL32.DLL BaseThreadInitThunk
>> created by main thread (c) at:
5dc09787 +000 MSHTML.dll
thread 7c: <priority:-1>
75dd28bd +00 KERNELBASE.dll WaitForMultipleObjectsEx
004b42ad +0d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +32 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
>> created by main thread (c) at:
7562808b +6b msvcrt.dll _beginthreadex
thread 98:
75dd28bd +000 KERNELBASE.dll WaitForMultipleObjectsEx
777adcbd +15d USER32.dll MsgWaitForMultipleObjectsEx
004b42ad +00d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +032 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +022 KERNEL32.DLL BaseThreadInitThunk
>> created by thread 54 at:
5dc09787 +000 MSHTML.dll
thread 10:
75dc2cc1 +b1 KERNELBASE.dll WaitForSingleObjectEx
75dc2bfd +0d KERNELBASE.dll WaitForSingleObject
004b42ad +0d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +32 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
>> created by main thread (c) at:
7562808b +6b msvcrt.dll _beginthreadex
thread 1c:
75dd28bd +000 KERNELBASE.dll WaitForMultipleObjectsEx
777adcbd +15d USER32.dll MsgWaitForMultipleObjectsEx
004b42ad +00d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +032 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +022 KERNEL32.DLL BaseThreadInitThunk
>> created by thread 54 at:
5dc09787 +000 MSHTML.dll
thread 1c:
75dc2cc1 +b1 KERNELBASE.dll WaitForSingleObjectEx
75dc2bfd +0d KERNELBASE.dll WaitForSingleObject
004b42ad +0d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +32 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
>> created by main thread (c) at:
5dc09787 +00 MSHTML.dll
thread $ad4: <priority:15>
75dd28bd +00 KERNELBASE.dll WaitForMultipleObjectsEx
754e7b83 +13 KERNEL32.DLL WaitForMultipleObjects
004b42ad +0d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +32 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
>> created by main thread (c) at:
5dc06f90 +00 MSHTML.dll
thread 34:
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
thread 10:
75dc2cc1 +b1 KERNELBASE.dll WaitForSingleObjectEx
004b42ad +0d MyProgram.exe madExcept CallThreadProcSafe
004b4312 +32 MyProgram.exe madExcept ThreadExceptFrame
754e7c02 +22 KERNEL32.DLL BaseThreadInitThunk
>> created by thread $e9c at:
7390be93 +00 clr.dll
cpu registers:
eax = 5ac03308
ebx = 5ac03308
ecx = 2a59eaa5
edx = 00000000
esi = 5ac03308
edi = 119810fc
eip = 0064e033
esp = 0018e3e4
ebp = 0018e414
stack dump:
0018e3e4 08 33 c0 5a 5e e0 64 00 - 44 06 13 00 52 7f 75 00 .3.Z^.d.D...R.u.
0018e3f4 68 e4 18 00 04 b2 40 00 - 14 e4 18 00 da 00 b7 0f h.....@.........
0018e404 07 00 00 00 fc 10 98 11 - 07 00 00 00 c8 6f 9c 11 .............o..
0018e414 60 e4 18 00 57 ad 64 00 - 07 00 00 00 07 00 00 00 `...W.d.........
0018e424 cc a4 40 00 4c e4 18 00 - db a4 40 00 44 e4 18 00 ..@.L.....@.D...
0018e434 c8 6f 9c 11 1c ef c9 04 - c8 6f 9c 11 68 bf a9 16 .o.......o..h...
0018e444 98 e4 18 00 cd 9d 40 00 - a0 e4 18 00 c8 6f 9c 11 ......@......o..
0018e454 1c ef c9 04 d0 e4 18 00 - c8 6f 9c 11 98 e4 18 00 .........o......
0018e464 f4 f1 f1 00 a0 e4 18 00 - 04 b2 40 00 98 e4 18 00 ..........@.....
0018e474 07 00 00 00 c8 6f 9c 11 - 8b 96 7a 77 00 00 00 00 .....o....zw....
0018e484 00 00 00 00 29 0e 41 2a - 68 bf a9 16 d0 e4 18 00 ....).A*h.......
0018e494 c8 6f 9c 11 c8 e4 18 00 - 8f a7 64 00 ac e4 18 00 .o........d.....
0018e4a4 04 b2 40 00 c8 e4 18 00 - 90 e5 18 00 d4 af 40 00 ..@...........@.
0018e4b4 c8 e4 18 00 da 00 b7 0f - 07 00 00 00 00 00 00 00 ................
0018e4c4 c8 6f 9c 11 e0 e4 18 00 - 1e dd 54 00 07 00 00 00 .o........T.....
0018e4d4 ae 02 0a 00 00 00 00 00 - 00 00 00 00 0c e5 18 00 ................
0018e4e4 71 8e 7a 77 02 06 02 00 - 07 00 00 00 ae 02 0a 00 q.zw............
0018e4f4 00 00 00 00 07 00 00 00 - cd ab ba dc 00 00 00 00 ................
0018e504 da 00 b7 0f 07 00 00 00 - a0 e5 18 00 d1 90 7a 77 ..............zw
0018e514 da 00 b7 0f 02 06 02 00 - 07 00 00 00 ae 02 0a 00 ................
disassembling:
[...]
00b5401a call -5fcb (e054) ; Vcl.Controls.TWinControl.GetHandle
00b5401f push eax
00b54020 call -8f2d (b0f8) ; Winapi.Windows.PostMessage
00b54025 1092 mov edx, esi
00b54027 mov eax, ebx
00b54029 > call -fed3e (52f0) ; Vcl.Forms.TCustomForm.WndProc
00b5402e 1093 pop esi
00b5402f pop ebx
00b54030 ret
来自 madExcept 的堆栈跟踪顶部是：
0064e033 +003 MyProgram.exe Vcl.Controls TWinControl.HandleNeeded
您确实应该使用足够的信息来构建您的程序以获取行号信息，但碰巧 +003 就足够了。反汇编 TWinControl.HandleNeeded 是这样的：
Vcl.Controls.pas.12079: begin
005659FC 56 push esi
005659FD 8BF0 mov esi,eax
Vcl.Controls.pas.12080: if WindowHandle = 0 then
005659FF 83BE7802000000 cmp dword ptr [esi+[=10=]000278],[=10=]
00565A06 7516 jnz [=10=]565a1e
地址在您的程序中会有所不同，但要点是 005659FF - 005659FC 是偏移量 +003。所以异常在函数的第一行：
if WindowHandle = 0 then
唯一的内存访问是尝试读取实例字段 WindowHandle。
并且当读取实例字段失败时，通常意味着实例指针要么是nil，要么指向一个已经被销毁的实例。由于异常文本指出：
Lesen von Adresse 5AC03580
您知道该程序正在尝试读取地址 5AC03580。由于距离零很远，您知道实例指针不是 nil。所以，所有的迹象都指向一个已经被销毁的实例。
我们无法告诉您为什么您的实例已被销毁。现在调试它是你的工作。并且请不要像这里的许多提问者一样，期望我们说的比人类所能说的更多。有时问题的答案只是告诉你下一步该怎么做。
调试双重免费方案可能有点棘手，因为它们往往很滑。您不会总是遇到运行时异常。尝试使用启用了完整调试选项的 FastMM 之类的工具，其中包括尝试检测双重释放错误的工具。