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Delphi Erro Access Violation At Address


I don't often get access violations, but when I do they are really hard to track down and fix. In this case, we can look at the assembler listing and see that the problem involves eax and edx registers. When should an author disclaim historical knowledge? Using text is not good. check over here

What is interesting about the message you get is the fact that NULL is mentioned twice. if Str.Count > 0 then // Mistake! Sometimes programmer uses CreateThread instead of BeginThread or TThread and forgets about changing IsMultiThreaded. 6. And I had to look more than 10 minutes at it, in order to see the AV that happened there. http://stackoverflow.com/questions/6214458/debugging-access-violation-errors

Delphi Access Violation At Address 00000

This type of error, stack overflow, is the eponym of our forum. Determinating why there is an error in this line - it is the second half of the case. If so: can there be an invalid index here? current community chat Stack Overflow Meta Stack Overflow your communities Sign up or log in to customize your list.

Once it pointed me to the small 5 line procedure. Nodes can be multiple selected and exported (the export iterates through each selected node and saves specific data to a text file - the information saved to the text file is It's SafeMM (newer version). Madexcept Process stopped.

I lost my equals key. share|improve this answer edited Mar 8 '16 at 23:50 answered Feb 10 '10 at 20:40 Heath Hunnicutt 12.3k2853 add a comment| up vote 7 down vote You start looking near that Reports: · Posted 4 years ago Top raphoenix Posts: 14920 This post has been reported. http://stackoverflow.com/questions/20048406/delphi-error-access-violation-at-address-xxxxxxxx-read-of-address-yyyyyyyy that was the problem i Uninstall it and the message passed away Reports: · Posted 4 years ago Top raphoenix Posts: 14920 This post has been reported.

That should at least give you an idea where in the code the error occurs. –500 - Internal Server Error Apr 3 '13 at 21:23 I'm sorry. Access Violation At Address Windows 7 First I Reset UEFI Bios to Optimum DEFAULT and save setting. An error logger is a very useful tool in modern development, and I'd recommend one for any product that's going to be deployed to any computer you do not control. Can time travel make us rich through trading, and is this a problem?

Delphi Find Error

If so: is a function declaration correct? If you are getting EAccessViolation while running under debugger: Then you should just click "Break" (it is called "Ok" in older Delphi's versions) and the debugger will point you to source Delphi Access Violation At Address 00000 If you are in doubt - place you code in synchronize or guard it by critical section, when working with shared variables. How To Fix Access Violation At Address yes thank i did just that btw i have a question about my video card how do i pm you?

Memory is consumed by every variable in your program. check my blog Ultimate Australian Canal Sort an array of integers into odd, then even What's the male version of "hottie"? So advice and tips would be very useful. Proc; // though Proc <> nil, its code is no longer available // that is why there will be an AV. How To Fix Access Violation At Address Delphi

Access violation at an address like 00642E83 (a number somewhere in the process's space, as opposed to something like 00000000 or FFFFFFF8) means that it was data access. Write/read of address ZZZ". I believe access violations are usually caused by trying to access something in memory that has not yet been created such as an Object etc? http://smartnewsolutions.com/access-violation/access-violation-at-address-in-module-read-of-address-000000008.html Ad choices Follow Tom’s guide Subscribe to our newsletter Sign up add to twitter add to facebook ajouter un flux RSS 12 May, 2009 Access Violation in details Exception of class

You might have overwritten a function's return address with zero, and the exception occurs at the end of the function. Access Violation At Address In Module Write Of Address How should I respond to absurd observations from customers during software product demos? Files can also be imported into the Treeview (saving the contents of the text files into the node.data).

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Is it a security vulnerability if the addresses of university students are exposed? share|improve this answer answered Feb 10 '10 at 23:17 Gerry Coll 5,10811831 add a comment| up vote 2 down vote When I've stumbled upon this problem I usually start looking at The call stack might still be intact, which should at least get you pretty close to your goal. Access Violation At Address 00000000. Read Of Address 00000000 In Toad Read of address yyyyyyyy”, at AdoQuery.SQL.Text:=''' up vote -1 down vote favorite 1 "Access violation at address xxxxxxxx.

Only you got the code. –Andreas Rejbrand Apr 3 '13 at 21:20 @AU_Outpost: Single-step into your application in the IDE, switch to the CPU window, then right-click and select Changing one of them would not cause this error. Yea I uninstall it completely and now i got rid of the annoying message box. have a peek at these guys Procedure than have error : Procedure TfMain.CreateNewDocument(p_money_direction,p_status,p_base:integer); begin With fMain.ADOTemp do Begin SQL.Clear; SQL.Text:='INSERT INTO documents '+ '(document_date,fk_id_status,money_direction,'+ 'paid,addition,saving,fk_id_base,fk_id_user)'+ 'VALUES '+ '(CONVERT(DATE,:pdocument_date,103),:pfk_id_status,'+ ':pmoney_direction,0,0,0,:pfk_id_base,:pfk_id_user)'; Parameters.ParamByName('pdocument_date').Value:=Date; Parameters.ParamByName('pfk_id_status').Value:=p_status; Parameters.ParamByName('pmoney_direction').Value:=p_money_direction; Parameters.ParamByName('pfk_id_base').Value:=p_base; Parameters.ParamByName('pfk_id_user').Value:=fMain.ApplicationVariablers.user_id; ExecSQL; End; end;

First, there are all kinds of errors of accessing an array's element outside of its borders. Looking for the Access Violation's reason by analyzing the code If you got an error while using debugger, then it is quite simple - you should place a breakpoint to your A Delphi type (Z = record)? Not the answer you're looking for?

The all-zero address indicates you've tried to use a nil pointer in application foo.exe. You should read this from top to bottom. Is it a row in a database? more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed

Read of address 00000000.