Home > Access Violation > Delphi Access Violation At Address Read Of Address

Delphi Access Violation At Address Read Of Address

Contents

Premature baldness will have to wait for another day. Ou entre com um desses serviços Entrar com o Facebook Cadastre-se Este Tópico Tudo Este Tópico Este Fórum Pesquisa Avançada Navegação Fóruns Regras Equipe de Moderação Usuários Online Mais Atividades Todas So there is no way for anyone to diagnose the problem for you. Remy Lebeau (TeamB) wrote: Tamar wrote: Project my.exe raised exception class $C0000005 with message 'access violation at 0x0068bf4a: read of address 0x000000e4'. check over here

andyho View Public Profile Visit andyho's homepage! Though we should be careful ... Thanks a bunch if recs.Count > 0 then begin try DataModule1.ADOQuery1.Close; DataModule1.ADOQuery1.SQL.Clear; field := recs.Fields.Item(recs.TableDesc.FieldName[4]); for i := 0 to recs.Count -1 do begin strNum[i] := field.ValueAsString; DataModule1.ADOQuery1.SQL.Add('select * from myView Not the answer you're looking for?

Delphi Access Violation At Address Read Of Address

The fine toothed comb is always a last resort, I was hoping I'd done something obviously wrong which may have been apparent. This caused other entries within the 'this' pointer to eventually be overwritten. Interestingly, that was cool because the array was declared BELOW the pointer, but he "underflowed" by using element [0] when the array was declared [1..5].

  • Apr 27 '10 at 17:24 add a comment| 5 Answers 5 active oldest votes up vote 8 down vote accepted Read of address 00000008 means that you're reading a variable at
  • All rights reserved. Developer Tools Blackfish SQL C++Builder Delphi FireMonkey Prism InterBase JBuilder J Optimizer HTML5 Builder 3rdRail & TurboRuby Database Tools Change Manager DBArtisan DB Optimizer ER/Studio Performance Center
  • misty29 Member Posts: 1Joined: November 18th, 2015, 7:27 pm Top Post a reply 1 post • Page 1 of 1 Return to Delphi Programming Jump to: Select a forum ------------------
  • Apr 27 '10 at 17:43 add a comment| up vote 2 down vote I don't think your error means anything like what it appears to.
  • 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

Here is a snippet from the code: String s,ss; ss = fLocalName + " skip"; for (int i = 0; i < fFrameLen; i++) { s.printf(L" 0x%02X", FrameData[i]); ss += s; I was able to transmit about twice as much data, but then the thread had an access violation again, at the same location, and stopped RS232 communication. At what point is brevity no longer a virtue? The code communicates over a COM port using RS232.

Find all posts by helenchu #8 07-09-2002, 01:51 PM andyho Senior Member Join Date: Jul 2001 Posts: 1,446 RE: more questions ? Access Violation At Address In Module Delphi share|improve this answer answered Apr 27 '10 at 17:08 Chris Thornton 12.8k32452 That won't cause an access violation for accessing a simple variable. –Loren Pechtel Apr 27 '10 at Delphi Project project1.exe raised exception class EConvertError with message Delphi Delphi project Project1.exe raised exception class ErangeError with messege 'Range check error'.Process stopped.Use Step or Run to continue: Project Project1.exe Hello, try this way: if recs.Count > 0 then begin try DataModule1.ADOQuery1.Close; DataModule1.ADOQuery1.SQL.Clear; field := recs.Fields.Item(recs.TableDesc.FieldName[4]); for i := 0 to recs.Count -1 do begin strNum[i] := field.ValueAsString; DataModule1.ADOQuery1.SQL.Add('select * from

The communication runs successfully for a while, with several messages sent and received, and then suddenly stops. Look in the rear view mirror to see what you ran over. ;> –dthorpe Apr 27 '10 at 17:39 I'd just discovered this after doing a CPU trace, but andyho View Public Profile Visit andyho's homepage! asked 6 years ago viewed 8154 times active 6 years ago Related 0delphi access violation-2Access violation Delphi program1Delphi: non-deterministic access violation using RTTI to set object properties from TMemo.Text2Access Violation during

Access Violation At Address In Module Delphi

darktmlr darktmlr Email darktmlr darktmlr #4 10.03.2013, 22:22 BBBCat : 10.03.2013 : 73 : 10 Taxiing with one engine: Is engine #1 always used or do they switch? Delphi Access Violation At Address Read Of Address MoreAnswers 37091 / 29110 / 5898 : 17.06.2006 : 43,301 20.09.2010, 11:52 Project Project1.exe raised exception class EAccessViolation with message 'Access violation at address 007B90DA in module 'Project1.exe'... How To Fix Access Violation At Address Something that consistent would definately imply a logic bug.

more hot questions question feed about us tour help blog chat data legal privacy policy work here advertising info mobile contact us feedback Technology Life / Arts Culture / Recreation Science check my blog Post a reply 1 post • Page 1 of 1 Raised exception class EAccessViolation by misty29 » November 18th, 2015, 7:36 pm I can't seem to find the cause of this. Apr 27 '10 at 17:26 @Loren - thanks, yes you're right. Have you put a breakpoint on this line?

This is particularly frustrating, becaue I swear have used this identical code in a number of other projects and not had a problem. Use Step or Run to continue.---------------------------OK Help ---------------------------O que pode ser?

Responder Citar Mais posts Onjahyr   - 07 fev 2008 Assim fica dificil de saber n?Debuga ele pelo I've tried declaring the variable local to the unit, to the procedure, globally - no matter where I try to do it I can't assign a value of zero to an this content Para isso:[list:5315b051e5][*:5315b051e5]marque as opes de debug em Project/Options/Compiler/Debugging[*:5315b051e5]d um build (menu Project/Build) no seu programa[*:5315b051e5]inicie a execuo do seu programa[*:5315b051e5]volte no Delphi[*:5315b051e5]no menu Search/Find Error, informe o endereo do erro (esse

Please note I am still learning. share|improve this answer answered Apr 27 '10 at 17:36 Mason Wheeler 59k29195355 4 Good point. Form2.Edit1.Text:=' '; 37 !!! @Lord_Voodoo - 8505 / 2172 / 61 : 07.03.2007 : 10,844 : 1 20.09.2010, 11:34 Project Project1.exe

What is this metal rail in the basement ceiling What's the point of repeating an email address in "The Envelope" and the "The Header"?

oops! –Chris Thornton Apr 27 '10 at 20:44 add a comment| Your Answer draft saved draft discarded Sign up or log in Sign up using Google Sign up using Facebook When you get an access violation from a piece of code like this that has no sane way of producing an access violation you're looking at trashed memory in some fashion. I would suggest a couple of additional changes: 1. That is because you are not creating the actual TStringList object.

Entrar Agora Entre para seguir isso Seguidores 0 Ir para a lista de tópicos Delphi, Kylix Estatísticas dos Fóruns Tópicos 141.629 Posts 629.188 Todas Atividades Home Programação & Desenvolvimento Delphi, Kylix Para isso:[list:daed0285b4][*:daed0285b4]marque as opes de debug em Project/Options/Compiler/Debugging[*:daed0285b4]d um build (menu Project/Build) no seu programa[*:daed0285b4]inicie a execuo do seu programa[*:daed0285b4]volte no Delphi[*:daed0285b4]no menu Search/Find Error, informe o endereo do erro (esse I am running Embarcadero C++ Builder 10 Seattle Subscription Update 1. have a peek at these guys Bye, Andy If it helped please click accept...

You need to 'new' the TStringList object, and then 'delete' it when done using it, eg: TStringList *Record = new TStringList; try { Record->LoadFromFile(recordfilename); // use Record void TForm9::initialize() { FILE *in; String recordfilename = "c:/c++builder/chmode_1_record.txt"; TStringList *Record; bool recordfileexists = false; if ( (in = fopen(AnsiString(recordfilename).c_str(), "r")) != NULL) { recordfileexists = true; Record->LoadFromFile(recordfilename); fclose(in); } } P.S Seems like it has something to do with the memory, how can I inspect the memory record in BCB 6.0 ?? Read of address 00000000.

Just the same, problem solved. Use Step or Run to continue. --------------------------- OK Help --------------------------- O que pode ser? Process stopped. share|improve this answer answered Apr 27 '10 at 17:11 dthorpe 27.1k34799 add a comment| up vote 0 down vote Move MyCounter up to the top of the var list, and see

It looks like the tool just did it's job. The code where the failure occurred was using Strings. This question troubles me, though sometimes nothing occurs... Tamar Pedersen Posts: 6 Registered: 2/5/16 Raised exception class $C0000005 - access violation Reply Posted: Jan 18, 2016 11:43 AM I have an executable that gets the following

Find all posts by figueroamar Page 1 of 2 1 2 > « Previous Thread | Next Thread » Thread Tools Show Printable Version Email this Page Display Modes Linear Mode Join them; it only takes a minute: Sign up Delphi access violation assigning local variable up vote 6 down vote favorite 1 This seems like the simplest thing in the world Process stopped. The code is in C++ so, this seemed like a step backwards, but I was willing to try, to see if perhaps the memory manager was releasing memory out from under

Have you tried installing an exception logger solution, like MadExcept or EurekaLog, into your app to gather information about uncaught exceptions at runtime? Thanks, Tamar Remy Lebeau (Te... The code the failure occurs at seems relatively innocuous, but the project is on the larger side. It is a way to detect such bugs. –mh taqia Aug 23 '13 at 14:49 1 you can also break the line into smaller chunks to narrow down where the

The crazy thing is that I do the exact same thing in a dozen other places in units all over the program without problems.