我开始收到这个与调试器相关的消息（Delphi Sydney）。知道这意味着什么吗？这个错误似乎很神秘。MS 网站上没有关于它的官方文档。
更新：
我可以按需复制：启动一个新项目，声明一个对象，将其设置为 nil，访问其属性。我没有显示可以调试的“标准”AV，而是看到了这个“无法访问调试进程内存”错误。此时无法再调试任何内容。
Delphi Rio 一切顺利。这似乎是 Windows 错误或 Delphi Sydney 错误！全新安装后仅 2 周就出现问题。
date/time : 2020-10-29, 20:35:12, 331ms
operating system : Windows 7 x64 Service Pack 1 build 7601
system language : English
system up time : 19 minutes 17 seconds
program up time : 11 seconds
processors : 8x AMD FX(tm)-8350 Eight-Core Processor
physical memory : 27298/32729 MB (free/total)
free disk space : (C:) 12.76 GB
display mode : 1920x1200, 32 bit
process id : $1e18
allocated memory : 223.37 MB
largest free block : 1.99 GB
command line : "C:\Delphi\Delphi Sydney\bin\bds.exe" -pDelphi
executable : bds.exe
current module : madExcept_.bpl
exec. date/time : 2020-08-22 14:55
version : 27.0.38860.1461
compiled with : Delphi 10.4 Sydney
madExcept version : 5.1.0
callstack crc : $e65dfdcc, $526ea7d6, $74c89cd5
exception number : 1
exception class : EDbkError
exception message : Unable to access debug process memory: Only part of a ReadProcessMemory or WriteProcessMemory request was completed.
thread $f50:
20378bc0 +058 dbkdebugide270.bpl Debug 13205 +3 TDebugger.DBKError
20318cc1 +065 dbkdebugide270.bpl DbkHelper 150 +4 CheckRetVal
20370113 +05f dbkdebugide270.bpl Debug 9799 +6 TProcess.ReadProcessMemory
203785ae +016 dbkdebugide270.bpl Debug 13076 +4 TDebugger.ShowException
20856336 +03a coreide270.bpl DebuggerMgr 2204 +3 TDebuggerMgr.ShowException
004b0a64 +018 bds.exe AppMain 4195 +3 TAppBuilder.ProcessException
2085720b +03b coreide270.bpl DebuggerMgr 2605 +7 TDebuggerMgr.ProcessStateChanged
20373b12 +066 dbkdebugide270.bpl Debug 11440 +2 TDebugger.DoNotifyProcessStateChanged
210688c1 +05d designide270.bpl ToolUtils 100 +5 ForEach
20373a71 +10d dbkdebugide270.bpl Debug 11432 +27 TDebugger.NotifyProcessStateChanged
2036ff7a +01e dbkdebugide270.bpl Debug 9739 +4 TProcess.SetProcessState
2238cd11 +111 win32debugide270.bpl Win32Debug 1473 +39 TNativeThread.DoHandleStopOnFirstChanceException
20369179 +5d1 dbkdebugide270.bpl Debug 6469 +158 TThread.ntfyThread
50180120 +01c rtl270.bpl System.Classes 17196 +1 TComponent.UpdateAction
50e56afb +017 vcl270.bpl Vcl.Forms 7907 +1 ProcessUpdate
50cf6f46 +2be vcl270.bpl Vcl.Controls 7480 +91 TControl.WndProc
50064530 +10c rtl270.bpl System 33034 +56 @FinalizeRecord
50df4287 +1c7 vcl270.bpl Vcl.Themes 5636 +18 TStyleManager.GetStyle
50df7b76 +14a vcl270.bpl Vcl.Themes 7397 +38 TStyleHook.WndProc
50df7d6c +000 vcl270.bpl Vcl.Themes 7505 +0 TMouseTrackControlStyleHook.WndProc
50df739a +066 vcl270.bpl Vcl.Themes 7110 +20 TStyleHook.HandleMessage
50df4334 +054 vcl270.bpl Vcl.Themes 5665 +11 TStyleManager.HandleMessage
50cfa147 +00f vcl270.bpl Vcl.Controls 9344 +0 TWinControl.DoHandleStyleMessage
50cf6b80 +024 vcl270.bpl Vcl.Controls 7258 +10 TControl.Perform
50e5cf0f +087 vcl270.bpl Vcl.Forms 12246 +9 TApplication.DispatchAction
50e5a655 +469 vcl270.bpl Vcl.Forms 10589 +98 TApplication.WndProc
50181450 +014 rtl270.bpl System.Classes 18021 +8 StdWndProc
50064530 +10c rtl270.bpl System 33034 +56 @FinalizeRecord
75df7bd5 +00a USER32.dll DispatchMessageA
50e5b247 +0fb vcl270.bpl Vcl.Forms 11030 +25 TApplication.ProcessMessage
50e5b282 +00a vcl270.bpl Vcl.Forms 11058 +1 TApplication.HandleMessage
50e5b5b5 +0c9 vcl270.bpl Vcl.Forms 11196 +26 TApplication.Run
0051e178 +0cc bds.exe bds 222 +13 initialization
75c2343b +010 kernel32.dll BaseThreadInitThunk
thread $1cac:
77380156 +0e ntdll.dll NtWaitForMultipleObjects
75c2343b +10 kernel32.dll BaseThreadInitThunk
thread $1e70:
77381f3f +0b ntdll.dll NtWaitForWorkViaWorkerFactory
75c2343b +10 kernel32.dll BaseThreadInitThunk
thread $95c:
77380156 +0e ntdll.dll NtWaitForMultipleObjects
7625176f +fa KERNELBASE.dll WaitForMultipleObjectsEx
75c219f7 +89 kernel32.dll WaitForMultipleObjectsEx
75e00894 +00 USER32.dll MsgWaitForMultipleObjectsEx
75e00b94 +1a USER32.dll MsgWaitForMultipleObjects
75c2343b +10 kernel32.dll BaseThreadInitThunk
thread $1234: <priority:1>
77380156 +0e ntdll.dll NtWaitForMultipleObjects
7625176f +fa KERNELBASE.dll WaitForMultipleObjectsEx
75c219f7 +89 kernel32.dll WaitForMultipleObjectsEx
5023d6d6 +06 rtl270.bpl System.SyncObjs 774 +1 THandleObject.WaitFor
5017d4a1 +49 rtl270.bpl System.Classes 15509 +18 ThreadProc
50061d64 +28 rtl270.bpl System 25422 +45 ThreadWrapper
75c2343b +10 kernel32.dll BaseThreadInitThunk
thread $1adc:
77381f3f +0b ntdll.dll NtWaitForWorkViaWorkerFactory
75c2343b +10 kernel32.dll BaseThreadInitThunk
thread $1378:
77381f3f +0b ntdll.dll NtWaitForWorkViaWorkerFactory
75c2343b +10 kernel32.dll BaseThreadInitThunk
thread $1e40:
7737fd8a +0e ntdll.dll NtDelayExecution
76253d91 +5f KERNELBASE.dll SleepEx
76254662 +0a KERNELBASE.dll Sleep
75c2343b +10 kernel32.dll BaseThreadInitThunk
thread $d88:
77381f3f +0b ntdll.dll NtWaitForWorkViaWorkerFactory
75c2343b +10 kernel32.dll BaseThreadInitThunk
thread $260:
77380156 +0e ntdll.dll NtWaitForMultipleObjects
7625176f +fa KERNELBASE.dll WaitForMultipleObjectsEx
75c219f7 +89 kernel32.dll WaitForMultipleObjectsEx
75c2343b +10 kernel32.dll BaseThreadInitThunk
thread $bec:
7737fd8a +00e ntdll.dll NtDelayExecution
76253d91 +05f KERNELBASE.dll SleepEx
76254662 +00a KERNELBASE.dll Sleep
5017e341 +001 rtl270.bpl System.Classes 16266 +0 TThread.Sleep
004ddf4a +156 bds.exe SanctuaryChecker 2309 +20 CrossRefBinFolder$ActRec.$0$Body
5017b8ad +005 rtl270.bpl System.Classes 15293 +0 TAnonymousThread.Execute
5017d4a1 +049 rtl270.bpl System.Classes 15509 +18 ThreadProc
50061d64 +028 rtl270.bpl System 25422 +45 ThreadWrapper
75c2343b +010 kernel32.dll BaseThreadInitThunk
thread $1ed8:
77380156 +0e ntdll.dll NtWaitForMultipleObjects
7625176f +fa KERNELBASE.dll WaitForMultipleObjectsEx
75c219f7 +89 kernel32.dll WaitForMultipleObjectsEx
5023d6d6 +06 rtl270.bpl System.SyncObjs 774 +1 THandleObject.WaitFor
004536cf +2f bds.exe Sanctuary.LicenseRenewalThread 121 +3 TLicenseRenewalThread.Execute
5017d4a1 +49 rtl270.bpl System.Classes 15509 +18 ThreadProc
50061d64 +28 rtl270.bpl System 25422 +45 ThreadWrapper
75c2343b +10 kernel32.dll BaseThreadInitThunk
thread $1ad8:
77380156 +0e ntdll.dll NtWaitForMultipleObjects
7625176f +fa KERNELBASE.dll WaitForMultipleObjectsEx
75c219f7 +89 kernel32.dll WaitForMultipleObjectsEx
75c2343b +10 kernel32.dll BaseThreadInitThunk
thread $1e54: <priority:2>
77380156 +0e ntdll.dll NtWaitForMultipleObjects
7625176f +fa KERNELBASE.dll WaitForMultipleObjectsEx
75c219f7 +89 kernel32.dll WaitForMultipleObjectsEx
75c2343b +10 kernel32.dll BaseThreadInitThunk
thread $1350:
7737f8ca +00e ntdll.dll NtWaitForSingleObject
76292f7b +05b ws2_32.dll WahReferenceContextByHandle
7629673b +09c ws2_32.dll select
004cd24e +2b6 bds.exe Sanctuary.SanctSocketUtil 359 +18 TSanctSocketHelper.AcceptConnections
004ce125 +02d bds.exe Sanctuary.InstanceCountListener 64 +6 TInstanceCountListener.Execute
5017d4a1 +049 rtl270.bpl System.Classes 15509 +18 ThreadProc
50061d64 +028 rtl270.bpl System 25422 +45 ThreadWrapper
75c2343b +010 kernel32.dll BaseThreadInitThunk
thread $1eb0:
7737f8ca +00e ntdll.dll NtWaitForSingleObject
76251623 +092 KERNELBASE.dll WaitForSingleObjectEx
75c2118f +03e kernel32.dll WaitForSingleObjectEx
75c21143 +00d kernel32.dll WaitForSingleObject
5009fe5e +002 rtl270.bpl System.SysUtils 23655 +0 WaitForSyncWaitObj
500a004f +01f rtl270.bpl System.SysUtils 23884 +6 WaitOrSignalObj
50060c89 +065 rtl270.bpl System 19934 +16 TMonitor.Wait
50060cfa +022 rtl270.bpl System 19952 +3 TMonitor.Wait
004522ef +13f bds.exe Sanctuary.LicenseVerificationThread 96 +19 TLicenseVerificationThread.Execute
5017d4a1 +049 rtl270.bpl System.Classes 15509 +18 ThreadProc
50061d64 +028 rtl270.bpl System 25422 +45 ThreadWrapper
75c2343b +010 kernel32.dll BaseThreadInitThunk
thread $c0c:
7737f8ca +0e ntdll.dll NtWaitForSingleObject
76251623 +92 KERNELBASE.dll WaitForSingleObjectEx
75c2118f +3e kernel32.dll WaitForSingleObjectEx
75c21143 +0d kernel32.dll WaitForSingleObject
212fcc6e +26 vclide270.bpl IDEVirtualTrees 5264 +4 TWorkerThread.Execute
5017d4a1 +49 rtl270.bpl System.Classes 15509 +18 ThreadProc
50061d64 +28 rtl270.bpl System 25422 +45 ThreadWrapper
75c2343b +10 kernel32.dll BaseThreadInitThunk
thread $df8:
77380156 +0e ntdll.dll NtWaitForMultipleObjects
7625176f +fa KERNELBASE.dll WaitForMultipleObjectsEx
75c219f7 +89 kernel32.dll WaitForMultipleObjectsEx
5023d6d6 +06 rtl270.bpl System.SyncObjs 774 +1 THandleObject.WaitFor
0e37c759 +11 LivePreview270.bpl LivePreviewServer 733 +3 TStreamStackThread.TStreamStack.WaitStream
0e37c40d +29 LivePreview270.bpl LivePreviewServer 625 +4 TStreamStackThread.Execute
5017d4a1 +49 rtl270.bpl System.Classes 15509 +18 ThreadProc
50061d64 +28 rtl270.bpl System 25422 +45 ThreadWrapper
75c2343b +10 kernel32.dll BaseThreadInitThunk
thread $9f4 (TDosThread):
77380156 +00e ntdll.dll NtWaitForMultipleObjects
7625176f +0fa KERNELBASE.dll WaitForMultipleObjectsEx
75c219f7 +089 kernel32.dll WaitForMultipleObjectsEx
75c22687 +013 kernel32.dll WaitForMultipleObjects
0d306bd9 +795 IDELSP270.bpl BaseLSP.DosCommand 849 +160 TDosThread.Execute
5985b4eb +02b madExcept_.bpl madExcept HookedTThreadExecute
5017d4a1 +049 rtl270.bpl System.Classes 15509 +18 ThreadProc
50061d64 +028 rtl270.bpl System 25422 +45 ThreadWrapper
5985b3d1 +00d madExcept_.bpl madExcept CallThreadProcSafe
5985b436 +032 madExcept_.bpl madExcept ThreadExceptFrame
75c2343b +010 kernel32.dll BaseThreadInitThunk
>> created by thread $f50 at:
5017d564 +018 rtl270.bpl System.Classes 15564 +1 TThread.Create
thread $1f0c (TReadPipe):
7737f8fe +00e ntdll.dll NtReadFile
7624deef +112 KERNELBASE.dll ReadFile
75c24034 +04f kernel32.dll ReadFile
0d303162 +086 IDELSP270.bpl ReaderUnit 173 +20 TReader.ReadBuffer
0d302fa2 +026 IDELSP270.bpl ReaderUnit 92 +4 TReader.Find
0d307bb5 +089 IDELSP270.bpl BaseLSP.DosCommand 1295 +4 TReadPipe.Execute
5017d4a1 +049 rtl270.bpl System.Classes 15509 +18 ThreadProc
50061d64 +028 rtl270.bpl System 25422 +45 ThreadWrapper
5985b3d1 +00d madExcept_.bpl madExcept CallThreadProcSafe
5985b436 +032 madExcept_.bpl madExcept ThreadExceptFrame
75c2343b +010 kernel32.dll BaseThreadInitThunk
>> created by thread $9f4 (TDosThread) at:
5017d564 +018 rtl270.bpl System.Classes 15564 +1 TThread.Create
thread $1230: <priority:1>
77381f0b +0b ntdll.dll NtWaitForDebugEvent
773ff355 +19 ntdll.dll DbgUiWaitStateChange
75c989f9 +1c kernel32.dll WaitForDebugEvent
5985b3d1 +0d madExcept_.bpl madExcept CallThreadProcSafe
5985b436 +32 madExcept_.bpl madExcept ThreadExceptFrame
75c2343b +10 kernel32.dll BaseThreadInitThunk
>> created by thread $f50 at:
1ea9f48b +00 bordbk270N.dll
thread $840:
7737f8ca +0e ntdll.dll NtWaitForSingleObject
76251623 +92 KERNELBASE.dll WaitForSingleObjectEx
75c2118f +3e kernel32.dll WaitForSingleObjectEx
75c21143 +0d kernel32.dll WaitForSingleObject
5985b3d1 +0d madExcept_.bpl madExcept CallThreadProcSafe
5985b436 +32 madExcept_.bpl madExcept ThreadExceptFrame
75c2343b +10 kernel32.dll BaseThreadInitThunk
>> created by thread $f50 at:
1ea707ee +00 bordbk270N.dll
disassembling:
[...]
20378b8e mov edx, ebx
20378b90 mov eax, esi
20378b92 call -$4b ($20378b4c) ; Debug.TDebugger.GetDbkErrorMsg (dbkdebugide270.bpl)
20378b92
20378b97 013204 cmp dword ptr [ebp-8], 0
20378b9b jnz loc_20378bc7
20378b9b
20378b9d 013205 mov eax, ebx
20378b9f call -$5ff80 ($20318c24) ; Dbkhelper.ErrCode (dbkdebugide270.bpl)
20378b9f
20378ba4 mov [ebp-$10], eax
20378ba7 mov byte ptr [ebp-$c], 0
20378bab lea eax, [ebp-$10]
20378bae push eax
20378baf push 0
20378bb1 mov ecx, [ebp-4]
20378bb4 mov dl, 1
20378bb6 mov eax, [$203188bc] ; Dbkhelper.EDbkError.Create (dbkdebugide270.bpl)
20378bbb call -$65934 ($2031328c) ; Winapi.PsAPI.System.SysUtils.Exception.CreateFmt (dbkdebugide270.bpl)
20378bbb
20378bc0 > call -$67add ($203110e8) ; System.@RaiseExcept (dbkdebugide270.bpl)
20378bc0
20378bc5 jmp loc_20378bf3
20378bc5
20378bc5 ; ---------------------------------------------------------
20378bc5
20378bc7 loc_20378bc7:
20378bc7 013207 mov eax, ebx
20378bc9 call -$5ffaa ($20318c24) ; Dbkhelper.ErrCode (dbkdebugide270.bpl)
20378bc9
20378bce mov [ebp-$10], eax
20378bd1 mov byte ptr [ebp-$c], 0
20378bd5 lea eax, [ebp-$10]
20378bd8 push eax
20378bd9 push 0
20378bdb mov eax, [ebp-8]
20378bde push eax
20378bdf mov ecx, [ebp-4]
20378be2 mov dl, 1
20378be4 mov eax, [$203188bc] ; Dbkhelper.EDbkError.Create (dbkdebugide270.bpl)
20378be9 call -$6594a ($203132a4) ; Winapi.PsAPI.System.SysUtils.Exception.CreateFmtHelp (dbkdebugide270.bpl)
20378be9
[...]