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Delphi Access Violation At Address Read Of Address


Additionally you can take a look at call stack by choosing View/Debug Windows/Call stack from Delphi's main menu: This window shows you a call stack - the trace of executing to The last part: there can be multiply reference to one object/component via different variables. Publique | Assine | Fale conosco DevMedia Hospedagem web por Porta 80 Web Hosting

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For example, you can not access a VCL objects from another thread as VCL is not thread-safe - you should use Synchronize for this. To make things worse: the very same application can display any of the above behavior, depending on external conditions, such as OS and Delphi's version, user actions before error and so Sorry for seeing this answer after a long time. –APU Sep 12 '13 at 8:50 add a comment| Your Answer draft saved draft discarded Sign up or log in Sign Here is a good story about such case by Raymond Chen. 5.

Delphi Access Violation At Address Read Of Address

Why here? Memory for global variables is allocated by OS loader when executable module is loading and it is freed when module is unloading. I'll give it a go and if nothing else I suppose I'll just build a new unit rather than adding into an old one.

That implies a bug exists in your communication code. Para facilitar, tente determinar onde o erro estб ocorrendo. Process Stopped. Or, just forget the check and let LoadFromFile() throw an exception if the file cannot be loaded.

You will just have to use the debugger and see for yourself what is actually going on with your app's shutdown logic. Access Violation At Address In Module Delphi Application, which crashes. How does one evaluate a "locomotive" (rainbow card) in "Ticket to Ride?" Effects of bullets firing while in a handgun's magazine Delete new kernels /boot full Implementing realloc in C What Use the CPU view to see what registers are used to access the global var, and then work backward from there to see where that/those registers go awry.

I am running Embarcadero C++ Builder 10 Seattle Subscription Update 1. It also tell me that I have used an incorrect way to call the funtion of mshtml. If you are getting EAccessViolation just by calling a function from DLL - just carefully verify its declaration. Thanks for the pointer that put me on track!

Access Violation At Address In Module Delphi

We already talked about such situations before. 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 Delphi Access Violation At Address Read Of Address Looking for Access Violation's reason by analyzing the data First, we can retrieve some useful information from error's message itself. How To Fix Access Violation At Address Those psychic powers are comes with experience and I want to help you a little with it by giving you a list of most common mistakes, which can lead to EAccessViolation

JunkieBeat Посмотреть профиль Отправить персональное сообщение для JunkieBeat Посетить домашнюю страницу JunkieBeat Найти все сообщения от JunkieBeat #2 09.02.2013, 14:06 M.A.D.M.A.N. check over here 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 share|improve this answer answered Aug 24 '13 at 7:20 Remy Lebeau 241k13150284 Thanks a lot, it turns out that I made a mistake about pointer's memory allocation, I solved How do I create armor for a physically weak species?

Use Step or Run to continue Project app.exe faulted with message: 'access violation at 0x40036887: read of address 0x00000010'. I'm at a bit of a loss what to try next, and wondered if anyone else has encountered this. Have you looked at the call stack in the debugger when the AV occurs? http://0pacity.com/access-violation/access-violation-at-address-01b46f1a-in-module-39-toad-exe-39-read-of-address-00000008.html In the first case you should check: why do you try to use nil pointer (or who is the bad guy, who set pointer to nil).

Use step or Run to continue. CodeGuard provides runtime debugging for applications developed with C++Builder. CodeGuard checks for faulty memory use, improper memory allocation or deallocation, invalid file streams or handles, and resource leaks caused by improper use of file streams or handles.

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Especially, if you do a manual allocate or free of objects somewhere in your program. Do as andyho suggests below. d). The code where the failure occurred was using Strings.

Write of ad' Delphi ошибка project project1.exe raised exception class Estringlisterror Delphi project1.exe raised exception class EConvertError with message " Delphi Project Project1.exe raised exception class.... S[I] := 0; // this line will damage the return address of Button1Click in the stack end; // there will be EAccessViolation at this line, because the address of the caller try S[I] := 1; // instead of changing an array, we damages an exception handler frame, which was set by try S[I + 1] := 2; S[I + 2] := 3; weblink Latest Tags Bcb Coreide60.bpl Message Box Tmsgdlgbtn Tmsgdlgbuttons Type Windows Welcome Screen Most Read Tags Access Violation At Address C Builder Cppwebbrowser Execcommand Ihtmltable Keyboard Shortcut Keyboard Shortcuts Microsoft Sql Server

Find all posts by helenchu #2 07-09-2002, 11:14 AM figueroamar Senior Member Join Date: Jun 2001 Posts: 198 RE: EAccessviolation ?? Actually, the problem is encountered when one thread changes the data, which is used by another thread - and that becomes a complete surprise for the second thread.