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[BUG/PRB.] VFP 9.0 FIX - THE NUMBER OF TIMES TO TRY AGAIN AFTER PACK MEMO FAILED
January 2024
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CCB
1. BUG:
In vfp9 (and vfp6, vfp7, vfp8), somtimes the pack memo function runs failed on Windows Vista or later,
but vfp does not cause an error immediately.
When we use the table and memo files next time,
vfp will cause the error "Memo file is missing or is invalid (Error 41)".
2. CAUSE:
There are some compatible problems when vfp calls the pack memo function
for the Windows Defender program or the antivirus programs.
Now if vfp calls the pack memo function failed,
it will call the pack memo function many times again.
In the end, if vfp calls the pack memo function many times, but it always failed,
vfp will restore the old table and memo files, we will not lose any data.
There are some BUGs in the following code.
3. RESOLUTION:
We can write some code to fix the BUG.
Fun8afcbb :: ; proc near
push ebp ;0x008afcbb : 55
mov ebp , esp ;0x008afcbc : 8bec
;
; -------------------------------------------------------------------------------
; VFP 9.0 FIX - THE NUMBER OF TIMES TO TRY AGAIN AFTER PACK MEMO FAILED
; December 2020
; -------------------------------------------------------------------------------
; CCB
;
; The number of times to try again after pack memo failed.
;
; 2020/12/26, by ccb
;
; sub esp , 0C8h ;0x008afcbe : 81ecc8000000
sub esp , 02D8h ;0x008afcbe : 81ecc8000000
xor eax , eax
mov dword ptr [ ebp - 0C8h ][-060h][00h] , eax ;; _JUMP_BUFFER_vfp[50h], otherdata[10h].
mov dword ptr [ ebp - 0C8h ][-060h][50h] , eax
mov dword ptr [ ebp - 0C8h ][-060h][54h] , eax
mov dword ptr [ ebp - 0C8h ][-060h][58h] , eax
mov dword ptr [ ebp - 0C8h ][-060h][5Ch] , eax
mov dword ptr [ ebp - 0C8h ][-0C0h][00h] , eax ;; _JUMP_BUFFER_vfp[50h], otherdata[10h].
mov dword ptr [ ebp - 0C8h ][-0C0h][50h] , eax
mov dword ptr [ ebp - 0C8h ][-0C0h][54h] , eax
mov dword ptr [ ebp - 0C8h ][-0C0h][58h] , eax
mov dword ptr [ ebp - 0C8h ][-0C0h][5Ch] , eax
mov dword ptr [ ebp - 0C8h ][-0D0h][00h] , eax ;; error code.
mov dword ptr [ ebp - 0C8h ][-0D0h][04h] , eax
mov dword ptr [ ebp - 0C8h ][-0D0h][08h] , eax ;; vfpa_packmemo_packmemo_cnt
mov dword ptr [ ebp - 0C8h ][-0D0h][0Ch] , eax
mov dword ptr [ ebp - 0C8h ][-0E0h][00h] , 0FFFFFFFFh ;; hfoxfiledbf_tmp
mov dword ptr [ ebp - 0C8h ][-0E0h][04h] , eax
mov dword ptr [ ebp - 0C8h ][-0E0h][08h] , eax ;; filesizedbf_tmp
mov dword ptr [ ebp - 0C8h ][-0E0h][0Ch] , eax
mov dword ptr [ ebp - 0C8h ][-0F0h][00h] , 0FFFFFFFFh ;; hfoxfilefpt_tmp
mov dword ptr [ ebp - 0C8h ][-0F0h][04h] , eax
mov dword ptr [ ebp - 0C8h ][-0F0h][08h] , eax ;; filesizefpt_tmp
mov dword ptr [ ebp - 0C8h ][-0F0h][0Ch] , eax
mov dword ptr [ ebp - 0C8h ][-100h][00h] , eax ;; diroffset.
mov dword ptr [ ebp - 0C8h ][-100h][04h] , eax
mov dword ptr [ ebp - 0C8h ][-100h][08h] , eax
mov dword ptr [ ebp - 0C8h ][-100h][0Ch] , eax
mov dword ptr [ ebp - 0C8h ][-210h][00h] , eax ;; filenamedbf.
mov dword ptr [ ebp - 0C8h ][-210h][04h] , eax
mov dword ptr [ ebp - 0C8h ][-210h][08h] , eax
mov dword ptr [ ebp - 0C8h ][-210h][0Ch] , eax
push ebx ;0x008afcc4 : 53
push esi ;0x008afcc5 : 56
mov esi , dword ptr [ ebp + 16 ] ;0x008afcc6 : 8b7510
push edi ;0x008afcc9 : 57
mov ecx , esi ;0x008afcca : 8bce
call Fun53eaa2 ;0x008afccc : e8d1edc8ff
test eax , eax ;0x008afcd1 : 85c0
je Label8afe36 ;0x008afcd3 : 0f845d010000
mov eax , dword ptr [ Data9388dc ] ;0x008afcd9 : a1dc889300
lea esi , dword ptr [ esi + 4 * esi ] ;0x008afcde : 8d34b6
shl esi , 05h ;0x008afce1 : c1e605
mov edi , dword ptr [ esi + eax + 116 ] ;0x008afce4 : 8b7c0674
test edi , edi ;0x008afce8 : 85ff
mov dword ptr [ ebp - 20 ] , edi ;0x008afcea : 897dec
je Label8afd09 ;0x008afced : 741a
pushd 09h ;0x008afcef : 6a09
lea edx , dword ptr [ ebp - 28 ] ;0x008afcf1 : 8d55e4
call Fun4d6eae ;0x008afcf4 : e8b571c2ff
test eax , eax ;0x008afcf9 : 85c0
je Label8afd09 ;0x008afcfb : 740c
mov ecx , dword ptr [ ebp - 28 ] ;0x008afcfd : 8b4de4
test ecx , ecx ;0x008afd00 : 85c9
jl Label8afd09 ;0x008afd02 : 7c05
call Fun42ddf2 ;0x008afd04 : e8e9e0b7ff
Label8afd09 ::
mov eax , dword ptr [ Data9388dc ] ;0x008afd09 : a1dc889300
lea eax , dword ptr [ esi + eax + 120 ] ;0x008afd0e : 8d440678
mov esi , dword ptr [eax] ;0x008afd12 : 8b30
test esi , esi ;0x008afd14 : 85f6
mov dword ptr [ ebp - 24 ] , esi ;0x008afd16 : 8975e8
je Label8afe36 ;0x008afd19 : 0f8417010000
and dword ptr [eax] , 00h ;0x008afd1f : 832000
mov eax , dword ptr [esi] ;0x008afd22 : 8b06
mov edi , dword ptr [ eax + 021Ch ] ;0x008afd24 : 8bb81c020000
mov edx , dword ptr [ eax + 0214h ] ;0x008afd2a : 8b9014020000
mov ecx , edi ;0x008afd30 : 8bcf
call Fun434624 ;0x008afd32 : e8ed48b8ff
mov eax , dword ptr [esi] ;0x008afd37 : 8b06
push dword ptr [ eax + 0214h ] ;0x008afd39 : ffb014020000
pushd 03h ;0x008afd3f : 6a03
pop ebx ;0x008afd41 : 5b
call Fun41ac96 ;0x008afd42 : e84fafb6ff
mov ecx , edi ;0x008afd47 : 8bcf
call Fun43f9b2 ;0x008afd49 : e864fcb8ff
mov esi , dword ptr [esi] ;0x008afd4e : 8b36
xor ebx , ebx ;0x008afd50 : 33db
cmp dword ptr [ esi + 0110h ] , ebx ;0x008afd52 : 399e10010000
je Label8afd99 ;0x008afd58 : 743f
push dword ptr [ ebp + 12 ] ;0x008afd5a : ff750c
push dword ptr [ ebp + 8 ] ;0x008afd5d : ff7508
call Fun8b0e8b ;0x008afd60 : e826110000
mov edi , dword ptr [ ebp - 20 ] ;0x008afd65 : 8b7dec
cmp edi , ebx ;0x008afd68 : 3bfb
je Label8afd99 ;0x008afd6a : 742d
mov edx , edi ;0x008afd6c : 8bd7
call Fun43b5d5 ;0x008afd6e : e862b8b8ff
cmp eax , 05h ;0x008afd73 : 83f805
jne Label8afd99 ;0x008afd76 : 7521
pushd 011h ;0x008afd78 : 6a11
lea edx , dword ptr [ ebp - 32 ] ;0x008afd7a : 8d55e0
call Fun4d6eae ;0x008afd7d : e82c71c2ff
mov eax , dword ptr [ ebp - 32 ] ;0x008afd82 : 8b45e0
cmp eax , ebx ;0x008afd85 : 3bc3
je Label8afd99 ;0x008afd87 : 7410
mov eax , dword ptr [eax] ;0x008afd89 : 8b00
test byte ptr [ eax + 37 ] , 04h ;0x008afd8b : f6402504
je Label8afd99 ;0x008afd8f : 7408
mov ecx , dword ptr [ ebp + 8 ] ;0x008afd91 : 8b4d08
call Fun8b1bb3 ;0x008afd94 : e81a1e0000
Label8afd99 ::
call Fun41eb74 ;0x008afd99 : e8d6edb6ff
mov dword ptr [ ebp - 8 ] , eax ;0x008afd9e : 8945f8
lea edx , dword ptr [ ebp - 12 ] ;0x008afda1 : 8d55f4
lea eax , dword ptr [ ebp - 116 ] ;0x008afda4 : 8d458c
call Fun42c27f ;0x008afda7 : e8d3c4b7ff
push ebx ;0x008afdac : 53
push eax ;0x008afdad : 50
call Fun42c2be ;0x008afdae : e80bc5b7ff
mov esi , eax ;0x008afdb3 : 8bf0
cmp esi , ebx ;0x008afdb5 : 3bf3
pop ecx ;0x008afdb7 : 59
pop ecx ;0x008afdb8 : 59
jne Label8afdca ;0x008afdb9 : 750f
mov edx , dword ptr [ ebp + 8 ] ;0x008afdbb : 8b5508
mov ecx , dword ptr [ ebp - 8 ] ;0x008afdbe : 8b4df8
pushd 04h ;0x008afdc1 : 6a04
pushd 0FFFFFFFFh ;0x008afdc3 : 6aff
call Fun41e901 ;0x008afdc5 : e837ebb6ff
Label8afdca ::
lea eax , dword ptr [ ebp - 12 ] ;0x008afdca : 8d45f4
push eax ;0x008afdcd : 50
lea eax , dword ptr [ ebp - 116 ] ;0x008afdce : 8d458c
call Fun42d200 ;0x008afdd1 : e82ad4b7ff
cmp esi , ebx ;0x008afdd6 : 3bf3
jne Label8afe2e ;0x008afdd8 : 7554
lea edx , dword ptr [ ebp - 16 ] ;0x008afdda : 8d55f0
lea eax , dword ptr [ ebp + 0FFFFFF3Ch ] ;0x008afddd : 8d853cffffff
call Fun42c27f ;0x008afde3 : e897c4b7ff
push ebx ;0x008afde8 : 53
push eax ;0x008afde9 : 50
call Fun42c2be ;0x008afdea : e8cfc4b7ff
cmp eax , ebx ;0x008afdef : 3bc3
mov esi , dword ptr [ ebp - 8 ] ;0x008afdf1 : 8b75f8
pop ecx ;0x008afdf4 : 59
pop ecx ;0x008afdf5 : 59
jne Label8afe0a ;0x008afdf6 : 7512
test byte ptr [ esi + 16 ] , 040h ;0x008afdf8 : f6461040
jne Label8afe0a ;0x008afdfc : 750c
push esi ;0x008afdfe : 56
call Fun4ec1b8 ;0x008afdff : e8b4c3c3ff
;
; -------------------------------------------------------------------------------
; VFP 9.0 FIX - THE NUMBER OF TIMES TO TRY AGAIN AFTER PACK MEMO FAILED
; December 2020
; -------------------------------------------------------------------------------
; CCB
;
; The number of times to try again after pack memo failed.
;
; 2020/12/26, by ccb
;
; push esi ;0x008afe04 : 56
; call Fun41af30 ;0x008afe05 : e826b1b6ff
mov eax , dword ptr [ esi ]
mov eax , dword ptr [ eax + 4 ]
cmp eax , 00h
jl Label8afe0a
;; hfoxfiledbf_tmp.
;; hfoxfilefpt_tmp.
mov dword ptr [ ebp - 0C8h ][-0E0h][00h] , 0FFFFFFFFh
mov dword ptr [ ebp - 0C8h ][-0F0h][00h] , 0FFFFFFFFh
;; vfpa_fflush(hfoxfiledbf).
;; vfpa_fflush(hfoxfilefpt).
mov eax , dword ptr [ esi ]
mov eax , dword ptr [ eax ]
push eax
call Fun431d6c
mov eax , dword ptr [ esi ]
mov eax , dword ptr [ eax + 4 ]
push eax
call Fun431d6c
;; filesizedbf_tmp.
push edi
mov eax , dword ptr [ esi ]
mov edi , dword ptr [ eax ]
call Fun433ef7
mov dword ptr [ ebp - 0C8h ][-0E0h][08h] , eax
IF VFPA_VERSION GE 101
mov dword ptr [ ebp - 0C8h ][-0E0h][0Ch] , edx
ENDIF
pop edi
;; filesizefpt_tmp.
push edi
mov eax , dword ptr [ esi ]
mov edi , dword ptr [ eax + 4 ]
call Fun433ef7
mov dword ptr [ ebp - 0C8h ][-0F0h][08h] , eax
IF VFPA_VERSION GE 101
mov dword ptr [ ebp - 0C8h ][-0F0h][0Ch] , edx
ENDIF
pop edi
;; filenamedbf.
mov eax , dword ptr [ esi ]
mov ecx , dword ptr [ eax ]
lea eax , dword ptr [ ebp - 0C8h ][-210h][00h]
call Fun41975b
;; diroffset.
lea eax , dword ptr [ ebp - 0C8h ][-210h][00h]
push eax
lea eax , dword ptr [ ebp - 0C8h ][-100h][00h]
push eax
call Fun434bcf
;; hfoxfiledbf_tmp.
lea ecx , dword ptr [ ebp - 0C8h ][-100h][00h]
push ecx
call Fun431de4
mov dword ptr [ ebp - 0C8h ][-0E0h][00h] , eax
;; hfoxfilefpt_tmp.
lea ecx , dword ptr [ ebp - 0C8h ][-100h][00h]
push ecx
call Fun431de4
mov dword ptr [ ebp - 0C8h ][-0F0h][00h] , eax
;; copy file hfoxfiledbf to hfoxfiledbf_tmp.
IF VFPA_VERSION GE 101
pushd 00h
pushd 00h
push dword ptr [ ebp - 0C8h ][-0E0h][0Ch]
push dword ptr [ ebp - 0C8h ][-0E0h][08h]
pushd 00h
pushd 00h
ENDIF
pushd 01h
pushd 00h
push dword ptr [ ebp - 0C8h ][-0E0h][00h]
push dword ptr [ ebp - 0C8h ][-0E0h][08h]
pushd 00h
mov eax , dword ptr [ esi ]
mov eax , dword ptr [ eax ]
push eax
call Fun41b5cc
;; copy file hfoxfilefpt to hfoxfilefpt_tmp.
IF VFPA_VERSION GE 101
pushd 00h
pushd 00h
push dword ptr [ ebp - 0C8h ][-0F0h][0Ch]
push dword ptr [ ebp - 0C8h ][-0F0h][08h]
pushd 00h
pushd 00h
ENDIF
pushd 01h
pushd 00h
push dword ptr [ ebp - 0C8h ][-0F0h][00h]
push dword ptr [ ebp - 0C8h ][-0F0h][08h]
pushd 00h
mov eax , dword ptr [ esi ]
mov eax , dword ptr [ eax + 4 ]
push eax
call Fun41b5cc
;; vfpa_fflush(hfoxfiledbf_tmp).
;; vfpa_fflush(hfoxfilefpt_tmp).
push dword ptr [ ebp - 0C8h ][-0E0h][00h]
call Fun431d6c
push dword ptr [ ebp - 0C8h ][-0F0h][00h]
call Fun431d6c
mov dword ptr [ ebp - 0C8h ][-0D0h][08h] , 00h
Label8afe04 ::
mov dword ptr [ ebp - 0C8h ][-060h][00h] , 00h
mov dword ptr [ ebp - 0C8h ][-060h][50h] , 00h
mov dword ptr [ ebp - 0C8h ][-060h][54h] , 00h
lea eax , dword ptr [ ebp - 0C8h ][-060h][00h]
lea edx , dword ptr [ ebp - 0C8h ][-060h][50h]
call Fun42c27f
push 00h
push eax
call Fun42c2be
pop ecx
pop ecx
mov dword ptr [ ebp - 0C8h ][-060h][54h] , eax
mov dword ptr [ ebp - 0C8h ][-0D0h][00h] , eax
test eax , eax
jne Label8afe05
;; vfpa_packmemo().
;; vfpa_fflush(hfoxfiledbf).
;; vfpa_fflush(hfoxfilefpt).
push esi
call Fun41af30
mov eax , dword ptr [ esi ]
mov eax , dword ptr [ eax ]
push eax
call Fun431d6c
mov eax , dword ptr [ esi ]
mov eax , dword ptr [ eax + 4 ]
push eax
call Fun431d6c
Label8afe05 ::
lea eax , dword ptr [ ebp - 0C8h ][-060h][00h]
lea edx , dword ptr [ ebp - 0C8h ][-060h][50h]
push edx
call Fun42d200
cmp dword ptr [ ebp - 0C8h ][-060h][54h] , 00h
jne Label8afe07
mov dword ptr [ ebp - 0C8h ][-0C0h][00h] , 00h
mov dword ptr [ ebp - 0C8h ][-0C0h][50h] , 00h
mov dword ptr [ ebp - 0C8h ][-0C0h][54h] , 00h
lea eax , dword ptr [ ebp - 0C8h ][-0C0h][00h]
lea edx , dword ptr [ ebp - 0C8h ][-0C0h][50h]
call Fun42c27f
push 00h
push eax
call Fun42c2be
pop ecx
pop ecx
mov dword ptr [ ebp - 0C8h ][-0C0h][54h] , eax
mov dword ptr [ ebp - 0C8h ][-0D0h][00h] , eax
test eax , eax
jne Label8afe06
;; vfpa_packmemo().
;; vfpa_fflush(hfoxfiledbf).
;; vfpa_fflush(hfoxfilefpt).
push esi
call Fun41af30
mov eax , dword ptr [ esi ]
mov eax , dword ptr [ eax ]
push eax
call Fun431d6c
mov eax , dword ptr [ esi ]
mov eax , dword ptr [ eax + 4 ]
push eax
call Fun431d6c
Label8afe06 ::
lea eax , dword ptr [ ebp - 0C8h ][-0C0h][00h]
lea edx , dword ptr [ ebp - 0C8h ][-0C0h][50h]
push edx
call Fun42d200
cmp dword ptr [ ebp - 0C8h ][-0C0h][54h] , 00h
jne Label8afe07
jmp Label8afe08
Label8afe07 ::
;; vfpa_fflush(hfoxfiledbf).
;; vfpa_fflush(hfoxfilefpt).
mov eax , dword ptr [ esi ]
mov eax , dword ptr [ eax ]
push eax
call Fun431d6c
mov eax , dword ptr [ esi ]
mov eax , dword ptr [ eax + 4 ]
push eax
call Fun431d6c
;; copy file hfoxfiledbf_tmp to hfoxfiledbf.
IF VFPA_VERSION GE 101
pushd 00h
pushd 00h
push dword ptr [ ebp - 0C8h ][-0E0h][0Ch]
push dword ptr [ ebp - 0C8h ][-0E0h][08h]
pushd 00h
pushd 00h
ENDIF
pushd 01h
pushd 00h
mov eax , dword ptr [ esi ]
mov eax , dword ptr [ eax ]
push eax
push dword ptr [ ebp - 0C8h ][-0E0h][08h]
pushd 00h
push dword ptr [ ebp - 0C8h ][-0E0h][00h]
call Fun41b5cc
;; copy file hfoxfilefpt_tmp to hfoxfilefpt.
IF VFPA_VERSION GE 101
pushd 00h
pushd 00h
push dword ptr [ ebp - 0C8h ][-0F0h][0Ch]
push dword ptr [ ebp - 0C8h ][-0F0h][08h]
pushd 00h
pushd 00h
ENDIF
pushd 01h
pushd 00h
mov eax , dword ptr [ esi ]
mov eax , dword ptr [ eax + 4 ]
push eax
push dword ptr [ ebp - 0C8h ][-0F0h][08h]
pushd 00h
push dword ptr [ ebp - 0C8h ][-0F0h][00h]
call Fun41b5cc
;; vfpa_fflush(hfoxfiledbf).
;; vfpa_fflush(hfoxfilefpt).
mov eax , dword ptr [ esi ]
mov eax , dword ptr [ eax ]
push eax
call Fun431d6c
mov eax , dword ptr [ esi ]
mov eax , dword ptr [ eax + 4 ]
push eax
call Fun431d6c
mov dword ptr [ ebp - 0C8h ][-0D0h][00h] , 00h
mov ecx,dword ptr vfpa_sys9049_data
inc dword ptr [ ebp - 0C8h ][-0D0h][08h]
cmp dword ptr [ ebp - 0C8h ][-0D0h][08h],ecx
ja Label8afe08
push dword ptr vfpa_sys9074_data
call Sleep
jmp Label8afe04
Label8afe08 ::
cmp dword ptr [ ebp - 0C8h ][-0E0h][00h] , 00h
jl Label8afe09
;; vfpa_fclose(hfoxfiledbf_tmp).
mov ecx , dword ptr [ ebp - 0C8h ][-0E0h][00h]
call Fun42ddf2
mov dword ptr [ ebp - 0C8h ][-0E0h][00h] , 0FFFFFFFFh
Label8afe09 ::
cmp dword ptr [ ebp - 0C8h ][-0F0h][00h] , 00h
jl Label8afe0a
;; vfpa_fclose(hfoxfilefpt_tmp).
mov ecx , dword ptr [ ebp - 0C8h ][-0F0h][00h]
call Fun42ddf2
mov dword ptr [ ebp - 0C8h ][-0F0h][00h] , 0FFFFFFFFh
Label8afe0a ::
lea eax , dword ptr [ ebp - 16 ] ;0x008afe0a : 8d45f0
push eax ;0x008afe0d : 50
lea eax , dword ptr [ ebp + 0FFFFFF3Ch ] ;0x008afe0e : 8d853cffffff
call Fun42d200 ;0x008afe14 : e8e7d3b7ff
;
; -------------------------------------------------------------------------------
; VFP 9.0 FIX - THE NUMBER OF TIMES TO TRY AGAIN AFTER PACK MEMO FAILED
; December 2020
; -------------------------------------------------------------------------------
; CCB
;
; The number of times to try again after pack memo failed.
;
; 2020/12/26, by ccb
;
cmp dword ptr [ ebp - 0C8h ][-0E0h][00h] , 00h
jl Label8afe18
;; vfpa_fclose(hfoxfiledbf_tmp).
mov ecx , dword ptr [ ebp - 0C8h ][-0E0h][00h]
call Fun42ddf2
mov dword ptr [ ebp - 0C8h ][-0E0h][00h] , 0FFFFFFFFh
Label8afe18 ::
cmp dword ptr [ ebp - 0C8h ][-0F0h][00h] , 00h
jl Label8afe19
;; vfpa_fclose(hfoxfiledbf_tmp).
mov ecx , dword ptr [ ebp - 0C8h ][-0F0h][00h]
call Fun42ddf2
mov dword ptr [ ebp - 0C8h ][-0F0h][00h] , 0FFFFFFFFh
Label8afe19 ::
mov ecx , esi ;0x008afe19 : 8bce
call Fun43f9b2 ;0x008afe1b : e892fbb8ff
mov ecx , dword ptr [ Data937794 ] ;0x008afe20 : 8b0d94779300
xor edx , edx ;0x008afe26 : 33d2
inc edx ;0x008afe28 : 42
call Fun4e9e08 ;0x008afe29 : e8da9fc3ff
Label8afe2e ::
mov ecx , dword ptr [ ebp - 24 ] ;0x008afe2e : 8b4de8
call Fun42c1e2 ;0x008afe31 : e8acc3b7ff
Label8afe36 ::
pop edi ;0x008afe36 : 5f
pop esi ;0x008afe37 : 5e
pop ebx ;0x008afe38 : 5b
leave ;0x008afe39 : c9
ret 0Ch ;0x008afe3a : c20c00
4. APPLIES TO:
VFP 6.0.8167.0
VFP 6.0.8961.0 (SP5)
VFP 7.0.0.9262
VFP 7.0.0.9465 (SP1)
VFP 8.0.0.2521
VFP 8.0.0.3117 (SP1)
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.
IMPORTANT NOTE:
The following commands and functions have been fixed for the pack memo function:
PACK command
COMPILE command
MODIFY CLASS command
MODIFY PROJECT command: check project
BUILD command: check project
SOURCE CONTROL: check project
RESOURCE FILE: check resource file
; for the pack memo function, please refer to the following pseudo code:
;
; * temp.dbf is a temporary file name, for example, 000001aa000a.tmp.
; * temp.fpt is a temporary file name, for example, 000001aa000b.tmp.
;
; use test.dbf
; flush file test.dbf
; flush file test.fpt
;
; * copy to the backup files temp.dbf and temp.fpt:
; copy file test.dbf to temp.dbf
; copy file test.fpt to temp.fpt
; flush file temp.dbf
; flush file temp.fpt
;
; packmemocnt = 0
;
; start:
;
; * the first pack memo
; pack memo
; flush file test.dbf
; flush file test.fpt
;
; if there are some errors in the first pack memo, goto error.
;
; * the second pack memo
; pack memo && if there is no any error in the first pack memo, it's very fast in the second pack memo.
; flush file test.dbf
; flush file test.fpt
;
; if there are some errors in the second pack memo, goto error.
;
; * if there is no any error in the first pack memo and the second pack memo, it's normal.
; goto end
;
; error:
;
; * restore the files test.dbf and test.fpt from the backup files:
; copy file temp.dbf to test.dbf
; copy file temp.fpt to test.fpt
; flush file test.dbf
; flush file test.fpt
;
; packmemocnt = packmemocnt + 1
;
; if packmemocnt < SYS(9049) goto start && if pack memo failed, it will try many (SYS(9049)) times again.
;
; * if it has tried many (SYS(9049)) times, but it always pack memo failed,
; * there is no any changes for the files test.dbf and test.fpt,
; * we will not lose any data.
; goto end
;
; end:
;
; * delete backup files:
; delete file temp.dbf
; delete file temp.fpt
;
; * if the computer turns off or the program crashes when packing memo,
; * we can restore the files test.dbf and test.fpt from the backup files manually,
; * we will not lose any data.
5. REFERENCE WEBSITES:
1, baiyujia.com:
http://www.baiyujia.com
http://www.baiyujia.com/vfpdocuments/f_vfp9fix149.asp
http://www.baiyujia.com/vfpdocuments/f_vfp9fix68.asp
http://www.baiyujia.com/vfpdocuments/f_vfp9fix65.asp
http://www.baiyujia.com/vfpdocuments/f_vfp9fix66.asp
http://www.baiyujia.com/vfpdocuments/f_vfp9fix69.asp
http://www.baiyujia.com/vfpdocuments/f_vfp9fix70.asp
http://www.baiyujia.com/vfpdocuments/f_vfp9fix71.asp
http://www.baiyujia.com/vfpdocuments/f_vfp9fix72.asp
http://www.baiyujia.com/vfpdocuments/f_vfp9fix73.asp
http://www.baiyujia.com/vfpdocuments/f_vfp9fix74.asp
http://www.baiyujia.com/vfpdocuments/f_vfp9fix84.asp
http://www.baiyujia.com/vfpdocuments/f_vfp9fix85.asp
http://www.baiyujia.com/vfpdocuments/f_vfp9fix107.asp
http://www.baiyujia.com/vfpdocuments/f_vfp9fix108.asp
http://www.baiyujia.com/vfpdocuments/f_vfp9fix109.asp
http://www.baiyujia.com/vfpdocuments/f_vfp9fix110.asp
http://www.baiyujia.com/vfpdocuments/f_vfp9fix143.asp
http://www.baiyujia.com/vfpdocuments/f_vfp9fix144.asp
http://www.baiyujia.com/vfpdocuments/f_vfp9fix145.asp
http://www.baiyujia.com/vfpdocuments/f_vfp9fix146.asp
http://www.baiyujia.com/vfpdocuments/f_vfp9fix147.asp
http://www.baiyujia.com/vfpdocuments/f_vfp9fix148.asp
http://www.baiyujia.com/vfpdocuments/f_vfp9fix203.asp
http://www.baiyujia.com/vfpdocuments/f_vfp9fix261.asp
http://www.baiyujia.com/vfpdocuments/f_vfp9fix262.asp
http://www.baiyujia.com/vfpdocuments/f_vfp9fix269.asp
http://www.baiyujia.com/vfpdocuments/f_vfp9fix270.asp
http://www.baiyujia.com/vfpdocuments/f_vfp9fix278.asp
http://www.baiyujia.com/vfpdocuments/f_vfp9fix279.asp
2, microsoft.com:
https://social.msdn.microsoft.com/Forums/en-US/38eadf8b-d801-421e-9f71-c01a76e79864/memo-file-is-missing-or-invalid
https://social.msdn.microsoft.com/Forums/en-US/b8be4748-6089-4451-bd79-a76b9b6d02c6/random-memo-file-sct-is-missing-or-invalid
https://social.msdn.microsoft.com/forums/en-US/bc41018b-1446-4641-999e-d9d62ee0b242/memo-file-csct-missing-or-invalid
https://social.msdn.microsoft.com/Forums/en-US/9c802b90-8420-4a94-9184-45c048b83c38/vfp-90-on-window-7-memo-file-missing-or-invalid
https://social.msdn.microsoft.com/forums/en-US/62df884d-9012-42ed-a51d-0c3f0e8fd3e7/error-41-in-intstyle-0-memo-file
3, foxite.com:
https://www.foxite.com/archives/memo-file-myporjectpjt-is-missing-or-invalid-0000092755.htm
https://www.foxite.com/archives/memo-file-is-missing-or-invalid-0000034237.htm
https://www.foxite.com/archives/invalid-memo-file-under-w7-0000255749.htm
https://www.foxite.com/archives/can-not-modify-form-0000293924.htm
https://www.foxite.com/archives/compilation-problem-0000385161.htm
https://www.foxite.com/archives/corrupted-scx-file-0000105795.htm
https://www.foxite.com/archives/form-corruption-0000129626.htm
4, computer-programming-forum.com:
http://computer-programming-forum.com/2-vfp/d6fcb9125c0c971b.htm
http://computer-programming-forum.com/2-vfp/805f3de4e248b6a8.htm
http://computer-programming-forum.com/2-vfp/2909fea7b6c93556.htm
5, tek-tips.com:
https://www.tek-tips.com/viewthread.cfm?qid=413823
https://www.tek-tips.com/viewthread.cfm?qid=1777994
https://www.tek-tips.com/viewthread.cfm?qid=1513567
6, experts-exchange.com:
https://www.experts-exchange.com/questions/27433514/Visual-Foxpro-sct-is-missing-or-invalid.html
https://www.experts-exchange.com/questions/26815464/Memo-File-missing-or-Invalid-in-VFP-6-0.html
7, narkive.com:
https://microsoft.public.fox.programmer.exchange.narkive.com/X2csYw5C/memo-file-is-missing-invalid-error-behavior-in-vfp9
https://microsoft.public.fox.programmer.exchange.narkive.com/77JsOqgj/memory-file-is-invalid
https://microsoft.public.fox.vfp.oop.narkive.com/wxEG22NS/how-to-repair-a-corrupted-class-library
https://microsoft.public.fox.helpwanted.narkive.com/PdHvUB2C/cannot-open-form-due-to-error-of-memo-file
6. OTHER:
For reference only, there is no guarantees.
Any questions or suggestions, please send me an email at ccb2000@163.com.
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