[DONE] 1.875 (PB 4.20) - Invalid memory access

Mistrel · **Joined:** Sat Jun 30, 2007 8:04 pm **Posts:** 2704

This worked fine in 4.10 and whatever TailBite version I was using before.

TailBite code:

Code:

ProcedureDLL.s TB_Test()
   ProcedureReturn "Anything"
EndProcedure

PureBasic code:

Code:

Procedure This()
   Debug TB_Test()
EndProcedure ; crashes here

This()

It does not crash if it is not called from within a procedure:

Code:

Debug TB_Test()

I think this is the same problem from this report:

http://www.purebasic.fr/english/viewtopic.php?t=30840

npath · **Joined:** Tue Feb 15, 2005 5:15 pm **Posts:** 74

This problem is listed as "Done". However, I am having the same issue with tailbite. I keep getting "invalid memory access" errors, even with simple procedures. I am using the latest version of Tailbite and PB 4.2 (Windows XP pro and Vista Ultimate). Anyone else having this problem?

ABBKlaus · **Posted:** Tue Jul 08, 2008 7:53 am

npath wrote:

This problem is listed as "Done". However, I am having the same issue with tailbite. I keep getting "invalid memory access" errors, even with simple procedures. I am using the latest version of Tailbite and PB 4.2 (Windows XP pro and Vista Ultimate). Anyone else having this problem?

You are propably calling some exported string functions from inside the library ?
But without a snippet i´m only guessing.

npath · **Joined:** Tue Feb 15, 2005 5:15 pm **Posts:** 74

I believe you are right. My problem is with this procedure:

Code:

ProcedureDLL.l ParseString(stringToParse.s, arrayToFill.s(1), delimiter.s) ; Parse a string into an array using a delimiter. Returns count.
  ; Source: Uses code posted by pdwyer
  ; http://www.purebasic.fr/english/viewtopic.php?t=31044&highlight=split+string
 
  Structure MemoryArray
    Byte.c[0]
    word.w[0]
  EndStructure
  
  FindLen.l = Len(delimiter)
  MainLen.l = Len(stringToParse)
  arrayToFill.s(0)
  StringCount.l = 0
  
  *MainByteArray.MemoryArray = @stringToParse  ;*MainMem
  *FindByteArray.MemoryArray = @delimiter       ;*FindMem
  
  PrevPos.l = 1
  
  ; Build BadChr Array
  Dim BadChar.l(255)
  
  ; set all alphabet to max shift pos (length of find string plus 1)
  For i = 0 To 255
    BadChar(i)  =  FindLen + 1
  Next
  
  ;Update chars that are in the find string to their position from the end.
  For i = 0 To FindLen -1
    BadChar(*FindByteArray\Byte[i]) = FindLen - i   
  Next     
  
  MainArrayLoop.l = 1
  EndSearchPos.l = MainLen - (FindLen -1)
  
  While MainArrayLoop <= EndSearchPos
    
    If CompareMemory(@stringToParse + MainArrayLoop, @delimiter, FindLen) = 1
      FoundPos = MainArrayLoop + 1
      Redim arrayToFill.s(StringCount )
      
      ;emulate fast mid() function inline,
      If FoundPos - PrevPos > 0
        *RetMem = AllocateMemory(FoundPos - PrevPos)
        CopyMemory(@stringToParse + PrevPos -1, *RetMem, FoundPos - PrevPos)
        MidStr.s = PeekS(*RetMem,FoundPos - PrevPos)
        FreeMemory(*RetMem)
      Else
        MidStr.s = ""
      EndIf
      
      arrayToFill(StringCount) = MidStr
      StringCount = StringCount + 1
      PrevPos = FoundPos + FindLen
      
    EndIf
    ;Didn't find the string so shift as per the table.
    MainArrayLoop + BadChar(*MainByteArray.MemoryArray\Byte[MainArrayLoop + FindLen])
  Wend
  
  ;catch end
  Redim arrayToFill.s(StringCount)
  arrayToFill(StringCount) = Mid(stringToParse, PrevPos, MainLen - PrevPos +1)
  StringCount = StringCount + 1
  Redim arrayToFill.s(StringCount)
  
  ProcedureReturn StringCount 
EndProcedure

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[DONE] 1.875 (PB 4.20) - Invalid memory access

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