I am using version DIRegEx version 8.6.9 on Delphi 10 Seattle, and seeing
an intermittent access violation in my application. DIRegEx_API is at the
top of the call stack.
I was able to cause this error in the DIRegEx_Workbench demo with Eurekalog
enabled. Eurekalog output with call stack is attached. This is very
similar to the call stack I'm seeing in my app.
In the workbench, the error seems to happen when I select the option RE:
Options -> poAutoJit, and happens immediately when I enter text into the
Match Pattern field. AutoJit is the only setting changed, all other
options are the default settings.
It doesn't happen all the time, but I can get it happen regularly, (only if
poAutoJit is enabled).
Does this sound familiar?
Jim Bretti
ÿþEurekaLog 7.4.0.0
Exception:
----------------------------------------------------------------------------------------------------------------
2.2 Address: 0074D7BD
2.5 Type : EAccessViolation
2.6 Message: Access violation at
address 0074D7BD in module
'DIRegEx_Workbench.exe'. Read of
address 02040800.
2.7 ID : F8540000
2.11 Sent : 0
Steps to reproduce:
------------
8.1 Text:
Call Stack Information:
-----------------------------------------------------------------------------------------------------------------------------
|Methods |Details|Stack |Address
|Module |Offset |Unit
|Class |Procedure/Method
|Line |
-----------------------------------------------------------------------------------------------------------------------------
|*Exception Thread: ID=9516; Parent=0;
Priority=0
|
|Class=; Name=MAIN
|
|DeadLock=0; Wait Chain=
|
|Comment=
|
|---------------------------------------------------------------------------------------------------------------------------|
|7FFFFFFE|03
|00000000|0074D7BD|DIRegEx_Workbench.exe|0034D7BD|DIRegEx_Api
| |?
| |
|00000020|03
|0028FEF4|75597895|user32.dll
|00017895|USER32 |
|DispatchMessageW | |
|00000020|03
|0028FF04|006D684F|DIRegEx_Workbench.exe|002D684F|Vcl.Forms
|TApplication|ProcessMessage
| |
|00000020|03
|0028FF20|006D6892|DIRegEx_Workbench.exe|002D6892|Vcl.Forms
|TApplication|HandleMessage
| |
|00000020|03
|0028FF44|006D6BC5|DIRegEx_Workbench.exe|002D6BC5|Vcl.Forms
|TApplication|Run
| |
|00000020|04
|0028FF74|007A31DC|DIRegEx_Workbench.exe|003A31DC|DIRegEx_Workbench|
|Initialization |39[7] |
|00000020|03
|0028FF8C|758E3388|kernel32.dll
|00013388|kernel32 |
|BaseThreadInitThunk| |
-----------------------------------------------------------------------------------------------------------------------------
Modules Information:
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Handle |Name
|Description
|Version |Size
|Modified |Path
|
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|00400000|DIRegEx_Workbench.exe|
|1.0.0.0 |4409856
|2016-06-10
14:13:09|C:\Users\Jim\Components\Delphi\DIRegEx\Demos\DIRegEx_Workbench\
|
|03E80000|dbghelp.dll |Windows
Image Helper
|6.12.2.633 |1213200
|2013-11-27
14:14:38|C:\Users\Jim\Components\Delphi\EurekaLog
7\Bin\
|
|03FD0000|symsrv.dll |Symbol
Server
|6.12.2.633 |131856
|2013-11-27
14:14:38|C:\Users\Jim\Components\Delphi\EurekaLog
7\Bin\
|
|10100000|lgscroll.dll
|Logitech Scroll Enabler (UNICODE)
|4.80.103.0 |38912
|2009-07-20 05:00:00|C:\Program
Files\Logitech\SetPoint\x86\
|
|71B70000|ntmarta.dll |Windows
NT MARTA provider
|6.1.7600.16385 |121856
|2009-07-13
21:16:11|C:\Windows\System32\
|
|71BB0000|uxtheme.dll
|Microsoft UxTheme Library
|6.1.7600.16385 |245760
|2009-07-13
21:11:24|C:\Windows\System32\
|
|71C40000|comctl32.dll |User
Experience Controls Library
|6.10.7601.18837 |1680896
|2015-04-24
13:54:13|C:\Windows\winsxs\x86_microsoft.windows.common-controls_6595b64144ccf1df_6.0.7601.18837_none_41e855142bd5705d\|
|71E60000|wkscli.dll
|Workstation Service Client DLL
|6.1.7601.17514 |47104
|2010-11-20
05:21:38|C:\Windows\System32\
|
|71E70000|srvcli.dll |Server
Service Client DLL
|6.1.7601.17514 |90112
|2010-11-20
05:21:28|C:\Windows\System32\
|
|71E90000|netutils.dll |Net
Win32 API Helpers DLL
|6.1.7601.17514 |22528
|2010-11-20
05:20:30|C:\Windows\System32\
|
|71EE0000|netapi32.dll |Net
Win32 API DLL
|6.1.7601.17887 |57344
|2012-07-04
17:16:56|C:\Windows\System32\
|
|72150000|winsta.dll
|Winstation Library
|6.1.7601.18540 |157696
|2014-07-16
21:40:03|C:\Windows\System32\
|
|72A50000|wtsapi32.dll |Windows
Remote Desktop Session Host Server SDK
APIs|6.1.7601.17514 |40448
|2010-11-20
05:21:40|C:\Windows\System32\
|
|72E60000|version.dll |Version
Checking and File Installation
Libraries |6.1.7600.16385 |21504
|2009-07-13
21:16:17|C:\Windows\System32\
|
|72E80000|msvcr80.dll
|Microsoft® C Runtime Library
|8.0.50727.6229 |626688
|2014-11-18
17:49:56|C:\Windows\winsxs\x86_microsoft.vc80.crt_1fc8b3b9a1e18e3b_8.0.50727.6229_none_d089f796442de10e\
|
|74730000|dwmapi.dll
|Microsoft Desktop Window Manager API
|6.1.7601.18917 |67584
|2015-07-09
13:42:54|C:\Windows\System32\
|
|752E0000|powrprof.dll |Power
Profile Helper DLL
|6.1.7600.16385 |145408
|2009-07-13
21:16:12|C:\Windows\System32\
|
|753D0000|winspool.drv |Windows
Spooler Driver
|6.1.7601.17514 |320000
|2010-11-20
05:16:52|C:\Windows\System32\
|
|75500000|CRYPTBASE.dll |Base
cryptographic API DLL
|6.1.7601.23418 |36352
|2016-04-09
01:37:37|C:\Windows\SysWOW64\
|
|75510000|sspicli.dll
|Security Support Provider Interface
|6.1.7601.23418 |96768
|2016-04-09
02:54:54|C:\Windows\SysWOW64\
|
|75580000|user32.dll
|Multi-User Windows USER API Client DLL
|6.1.7601.19061 |833024
|2015-11-10
14:37:39|C:\Windows\SysWOW64\
|
|75680000|rpcrt4.dll |Remote
Procedure Call Runtime
|6.1.7601.23418 |666112
|2016-04-09
02:54:54|C:\Windows\SysWOW64\
|
|75780000|lpk.dll
|Language Pack
|6.1.7601.19146 |25600
|2016-02-05
14:50:53|C:\Windows\SysWOW64\
|
|758D0000|kernel32.dll |Windows
NT BASE API Client DLL
|6.1.7601.23418 |1114112
|2016-04-09
02:54:54|C:\Windows\SysWOW64\
|
|759E0000|imm32.dll
|Multi-User Windows IMM32 API Client
DLL |6.1.7601.17514 |119808
|2010-11-20
05:08:52|C:\Windows\System32\
|
|75AA0000|psapi.dll |Process
Status Helper
|6.1.7600.16385 |6144
|2009-07-13
21:16:12|C:\Windows\SysWOW64\
|
|75CF0000|Wldap32.dll |Win32
LDAP API DLL
|6.1.7601.17514 |269824
|2010-11-20
05:21:38|C:\Windows\SysWOW64\
|
|75F50000|msctf.dll |MSCTF
Server DLL
|6.1.7601.18731 |828928
|2015-01-16
22:30:42|C:\Windows\SysWOW64\
|
|76020000|usp10.dll
|Uniscribe Unicode script processor
|1.626.7601.19054|627712
|2015-11-03
14:56:18|C:\Windows\SysWOW64\
|
|760C0000|advapi32.dll
|Advanced Windows 32 Base API
|6.1.7601.23418 |644096
|2016-04-09
02:54:42|C:\Windows\SysWOW64\
|
|76170000|imagehlp.dll |Windows
NT Image Helper
|6.1.7601.18288 |159232
|2013-10-18
21:36:59|C:\Windows\SysWOW64\
|
|761A0000|comdlg32.dll |Common
Dialogs DLL
|6.1.7601.17514 |485888
|2010-11-20
05:18:24|C:\Windows\SysWOW64\
|
|762B0000|setupapi.dll |Windows
Setup API
|6.1.7601.17514 |1667584
|2010-11-20
05:21:16|C:\Windows\SysWOW64\
|
|76460000|oleaut32.dll |
|6.1.7601.19144 |572416
|2016-02-03
14:49:27|C:\Windows\SysWOW64\
|
|76510000|msvcrt.dll |Windows
NT CRT DLL
|7.0.7601.17744 |690688
|2011-12-16
03:52:58|C:\Windows\SysWOW64\
|
|765C0000|gdi32.dll |GDI
Client DLL
|6.1.7601.23418 |312832
|2016-04-09
02:54:54|C:\Windows\SysWOW64\
|
|76650000|ole32.dll
|Microsoft OLE for Windows
|6.1.7601.23392 |1414144
|2016-03-17
18:28:21|C:\Windows\SysWOW64\
|
|767F0000|shlwapi.dll |Shell
Light-weight Utility Library
|6.1.7601.17514 |350208
|2010-11-20
05:21:20|C:\Windows\SysWOW64\
|
|768A0000|shell32.dll |Windows
Shell Common Dll
|6.1.7601.18952
|12875776|2015-08-06
13:44:51|C:\Windows\SysWOW64\
|
|774F0000|KERNELBASE.dll |Windows
NT BASE API Client DLL
|6.1.7601.23418 |275456
|2016-04-09
02:54:54|C:\Windows\SysWOW64\
|
|77690000|cfgmgr32.dll
|Configuration Manager DLL
|6.1.7601.17621 |145920
|2011-05-24
06:39:38|C:\Windows\SysWOW64\
|
|77760000|devobj.dll |Device
Information Set DLL
|6.1.7601.17621 |64512
|2011-05-24
06:40:05|C:\Windows\SysWOW64\
|
|777A0000|sechost.dll |Host
for SCM/SDDL/LSA Lookup APIs
|6.1.7601.18869 |92160
|2015-05-25
14:01:39|C:\Windows\SysWOW64\
|
|77BC0000|ntdll.dll |NT
Layer DLL
|6.1.7601.23418 |1314112
|2016-04-09
02:57:34|C:\Windows\SysWOW64\
|
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Processes Information:
----------------------
Assembler Information:
--------------------------------------------------------------------------------
; Base Address: $74D000, Allocation
Base: $400000, Region Size: 356352
; Allocation Protect:
PAGE_EXECUTE_WRITECOPY, Protect:
PAGE_EXECUTE_READ
; State: MEM_COMMIT, Type: MEM_IMAGE
;
;
; DIRegEx_Api.? (Line=0 - Offset=8071)
; ------------------------------------
0074D797 56 PUSH ESI
0074D798 57 PUSH EDI
0074D799 8945FC MOV [EBP-4],
EAX
0074D79C 8BF2 MOV ESI, EDX
0074D79E 33C0 XOR EAX, EAX
0074D7A0 8BD6 MOV EDX, ESI
0074D7A2 8B5D0C MOV EBX,
[EBP+$0C]
0074D7A5 8945F8 MOV [EBP-8],
EAX
0074D7A8 81E2007F0000 AND EDX,
$00007F00
0074D7AE 8BF9 MOV EDI, ECX
0074D7B0 33C9 XOR ECX, ECX
0074D7B2 8955F4 MOV [EBP-$0C],
EDX
0074D7B5 894DF0 MOV [EBP-$10],
ECX
0074D7B8 33C0 XOR EAX, EAX
0074D7BA 8B55FC MOV EDX,
[EBP-4]
;
; Line=0 - Offset=8109
; --------------------
0074D7BD 8B12 MOV EDX, [EDX]
; <-- EXCEPTION
0074D7BF 85D2 TEST EDX, EDX
0074D7C1 7407 JZ +7
; ($0074D7CA) DIRegEx_Api.?
(Line=0)
0074D7C3 8BC2 MOV EAX, EDX
0074D7C5 E9B8030000 JMP +$03B8
; ($0074DB82) DIRegEx_Api.?
(Line=0)
0074D7CA 81FF8B000000 CMP EDI,
$0000008B
0074D7D0 7509 JNZ +9
; ($0074D7DB) DIRegEx_Api.?
(Line=0)
0074D7D2 8B4D10 MOV ECX,
[EBP+$10]
0074D7D5 83C118 ADD ECX, $18
0074D7D8 894D10 MOV [EBP+$10],
ECX
0074D7DB 81FB8B000000 CMP EBX,
$0000008B
0074D7E1 7509 JNZ +9
; ($0074D7EC) DIRegEx_Api.?
(Line=0)
0074D7E3 8B5508 MOV EDX,
[EBP+8]
0074D7E6 83C218 ADD EDX, $18
0074D7E9 895508 MOV [EBP+8],
EDX
0074D7EC 83FF04 CMP EDI, 4
0074D7EF 7C1D JL +$1D
; ($0074D80E) DIRegEx_Api.?
(Line=0)
Registers:
-----------------------------
EAX: 00000000 EDI: 00000001
EBX: 00000040 ESI: 00000020
ECX: 00000000 EBP: 0028EF58
EDX: 02040800 ESP: 0028EF3C
EIP: 0074D7BD FLG: 00210246
EXP: 0074D7BD STK: 0028EF3C
Stack: Memory Dump:
------------------
---------------------------------------------------------------------------
03500D84: 00000000 0074D7BD: 8B 12 85
D2 74 07 8B C2 E9 B8 03 00 00 81 FF 8B
....t...........
03500D80: 00000000 0074D7CD: 00 00 00
75 09 8B 4D 10 83 C1 18 89 4D 10 81 FB
...u..M.....M...
03500D7C: 03705258 0074D7DD: 8B 00 00
00 75 09 8B 55 08 83 C2 18 89 55 08 83
....u..U.....U..
03500D78: 00000044 0074D7ED: FF 04 7C
1D 83 FF 07 7F 18 83 C7 F8 C1 E7 02 83
..|.............
03500D74: 00000000 0074D7FD: C7 18 89
7D 10 BF 8B 00 00 00 C7 45 F0 01 00 00
...}.......E....
03500D70: 00000040 0074D80D: 00 83 FB
04 7C 1B 83 FB 07 7F 16 83 C3 F8 B8 01
....|...........
03500D6C: FFFFFFFF 0074D81D: 00 00 00
C1 E3 02 83 C3 18 89 5D 08 BB 8B 00 00
..........].....
03500D68: 0075377A 0074D82D: 00 81 E6
FF 80 FF FF 83 FE 20 0F 8C 7E 02 00 00
......... ..~...
03500D64: 0028EFA4 0074D83D: 83 FE 2F
0F 8F 75 02 00 00 F6 45 F5 01 74 24 83
../..u....E..t$.
03500D60: 02040800 0074D84D: FB 3F 7F
1F 3B FB 75 1B 83 FE 21 7C 05 83 FE 24
.?..;.u...!|...$
03500D5C: 00000000 0074D85D: 7E 11 83
FE 29 7C 05 83 FE 2C 7E 07 33 C0 E9 12
~...)|...,~.3...
03500D58: 00000000 0074D86D: 03 00 00
83 FE 28 7C 0A C7 45 F8 01 00 00 00 83
.....(|..E......
03500D54: 00000000 0074D87D: EE 08 F6
C3 40 74 52 8B D6 83 EA 21 74 0B 4A 74
....@tR....!t.Jt
03500D50: 02040800 0074D88D: 12 4A 74
18 4A 74 1E EB 23 33 C9 8A 4D 08 89 4D
.Jt.Jt..#3..M..M
03500D4C: 0028F17C 0074D89D: 08 EB 19
0F BE 55 08 89 55 08 EB 10 0F B7 4D 08
.....U..U.....M.
03500D48: 00000000 0074D8AD: 89 4D 08
EB 07 0F BF 55 08 89 55 08 83 7D F0 00
.M.....U..U..}..
