------------------------------------------------------------------------------------------------
[BUG/PRB.] VFP 9.0 FIX - CLOSE THE FILE HANDLE _TEXT BEFORE ENTER THE ON ERROR ROUTINE
January 2024
------------------------------------------------------------------------------------------------
CCB
1. BUG:
In vfp9, vfp will close the file handle _TEXT before enter the ON ERROR routine.
The bug only occurs in vfp9, it does not occur in vfp6, vfp7 and vfp8.
The bug was reported by Mrs Martina Jindrova.
2. CAUSE:
There are some BUGs in the following code.
3. RESOLUTION:
We can write some code to fix the BUG.
Label58cd3f ::
;
; -------------------------------------------------------------------------------------
; VFP 9.0 FIX - CLOSE THE FILE HANDLE _TEXT BEFORE ENTER THE ON ERROR ROUTINE
; August 2019
; -------------------------------------------------------------------------------------
; CCB
;
; Close the file handle _TEXT before enter the ON ERROR routine.
;
; 2019/8/17, by ccb
;
cmp dword ptr vfpa_sys9023_data,00h
je Label4cecb3
mov esi , eax ;0x0058cd3f : 8bf0
push esi ;0x0058cd41 : 56
call Fun45340a ;0x0058cd42 : e8c366ecff
test eax , eax ;0x0058cd47 : 85c0
je Label58cd52 ;0x0058cd49 : 7407
mov ecx , esi ;0x0058cd4b : 8bce
call Fun42ddf2 ;0x0058cd4d : e8a010eaff
Label58cd52 ::
mov dword ptr [ Data9382c0 ] , 0FFFFFFFFh ;0x0058cd52 : c705c0829300ffffffff
xor esi , esi ;0x0058cd5c : 33f6
jmp Label4cecb3 ;0x0058cd5e : e9501ff4ff
4. APPLIES TO:
VFP 9.0.0.2412
VFP 9.0.0.3504 (SP1)
VFP 9.0.0.4611 (SP2)
VFP 9.0.0.5015 (SP2)
VFP 9.0.0.5411 (SP2)
VFP 9.0.0.5721 (SP2)
VFP 9.0.0.5815 (SP2)
VFP 9.0.0.6303 (SP2)
VFP 9.0.0.6602 (SP2)
VFP 9.0.0.7423 (SP2)
The bug has been fixed in VFP Advanced.
5. REFERENCE WEBSITES:
1, baiyujia.com:
http://www.baiyujia.com
http://www.baiyujia.com/vfpdocuments/f_vfp9fix87.asp
6. OTHER:
For reference only, there is no guarantees.
Any questions or suggestions, please send me an email at ccb2000@163.com.
|