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Catch Access Violation


Terms of Service Layout: fixed | fluid CodeProject, 503-250 Ferrand Drive Toronto Ontario, M3C 3G8 Canada +1 416-849-8900 x 100 Try...Catch doesn't catch access violation exception? Thank a lot. share|improve this answer answered Aug 12 '10 at 17:06 Tony Abrams 3,12921323 1 Tried AppDomain.UnhandledException, no luck, will give the article a read... –Jeremy Aug 12 '10 at 20:05 add Mike Wahler spoke thus: E.g. check over here

Using SEH, you can detect a lot of exceptions, access violations included, but not all (e.g. Iteration can replace Recursion? On Windows, a particular MSVC compiler option enables Microsoft's Structured Exception Handling (SEH) in C++ EH so that a catch (...) will catch an access violation. Do you think those platforms that do define 'access violation' mean the same thing by that term?

__try __except

There are a few ways to get around this: Recompile as a .NET 3.5 assembly and run it in .NET 4.0. No 'access violation', no error message, nothing. For details, see here: http://msdn.microsoft.com/en-us/library/windows/desktop/ms680657%28v=vs.85%29.aspx In effect, you can register to get a callback when an exception happens. yes I see it now, thanks!

No links allowed, this is a text only newsgroup. ;-) And please *not* so briefly that noone will understand. -- Attila aka WW Jul 19 '05 #6 P: n/a Ron Natalie Symbolic manipulation of expression with undefined function Applications of complex numbers to solve non-complex problems Fiancée has a position lined up, but none of the universities in the area are hiring. What advantage does that bring? Handleprocesscorruptedstateexceptionsattribute You can't do this to every exception for obvious reasons.

if you knew the bug, then why have it in shipping code? Yes With Seh Exceptions I'm wondering about how to best protect an application or library from poorly written user-defined callbacks. How do I create armor for a physically weak species? As such, implementations are indeed kinda constrained in what they can do with respect to reordering of operations that can raise SEH or synchronous signals (unless they can prove that reordering

http://www.amazon.com/author/siddhartha.rao Reply With Quote September 21st, 2006,05:26 PM #4 darbien View Profile View Forum Posts Junior Member Join Date Jul 2006 Posts 17 Re: Catch and handle "access violation" exception? Access Violation C++ Still upvoting for an interesting solution. Originally Posted by PadexArt Mate I've already provided you that example in my 1st post on this topic. For instance, some of the statements after the AV line of code may have already executed, or statements before the AV have not executed. –Aaron Jan 19 '09 at 19:55

Yes With Seh Exceptions

It would be nice to be able to automatically unregister a user-defined callback if it is found to cause any exception including access violations. With Microsoft this will involve SEH, and *nix will involve a signal In general though catching an Access Violation exception is a very bad idea. __try __except Exceptions are the C++ way of handling this. Access Violation Exception C++ does not throw an exception when you do something bad, that would incur a performance hit.

The method I am calling throws a System.AccessViolationException, which is intercepted by Visual Studio. http://jscience.net/access-violation/access-violation-msado15-dll.html Jim Index ‹ Visual C++ ‹ Visual C++ Language CodeGuru Home VC++ / MFC / C++ .NET / C# Visual Basic VB Forums Developer.com Register Help demanding a fix for C++ EH. as to the MSDN library, this should catch runtime errors like access violations too, but i get problems at build time (see my first post here). Access Violation Exception Was Unhandled C#

E.g. Does anyone know of a platform-independant method for achieving this? I don't know if other platforms support something similar. http://jscience.net/access-violation/dll-access-violation.html Why the pipe command "l | grep "1" " get the wrong result?

Since there will be no catch(...) ["unprotected" via fixed ES] and no hurting unwinding (due to currently broken ES), it would cause any *unexpected* exception end up in the std::unexpected() invoked Cannot Use __try In Functions That Require Object Unwinding What you need to do is to set you own undhandled exception handler. The following compiler switch (/EHa) should be what you need to make it work: http://msdn2.microsoft.com/en-us/library/1deeycx5.aspx   Thursday, September 21, 2006 8:28 PM Reply | Quote Moderator 0 Sign in to vote

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But with the understanding that it isn't something you can count on. and restarting is in effect not keeping your programming running. It would be nice to be able to automatically unregister a user-defined callback if it is found to cause any exception including access violations. System.accessviolationexception Attempted To Read Or Write Protected Memory I won't get into the why's or how's here.

no reasonably large program is entirely bug free. –thang Jan 30 '13 at 18:35 | show 1 more comment 2 Answers 2 active oldest votes up vote 3 down vote accepted Not the answer you're looking for? What is plausible biology of ocean-dwelling, tool-using, intelligent creatures? have a peek at these guys If so, how could this be done?

Things like bool expected_exception() and bool unwinding(T *) can follow as well. No 'access violation', no error message, nothing. The code in the question is undefined, which means that anything can happen, and be different each time. –KeithB Jan 19 '09 at 14:27 6 Catching Access Violation is not You can't.

Regarding: EDIT: I want my program to be really robust, even against programming errors. ... Support for asynchronous signals (such as SIGSEGV) is not required. share|improve this answer answered Jan 19 '09 at 13:33 JaredPar 463k889361248 So your advice is to know what is the cause of AV exception,is not it? –Ahmed Said Jan Iteration can replace Recursion?

http://www.amazon.com/author/siddhartha.rao Reply With Quote September 21st, 2006,08:26 PM #6 PadexArt View Profile View Forum Posts Visit Homepage Elite Member Join Date Aug 2002 Location Cluj-Napoca,Romania Posts 3,496 Re: Catch and handle I'm wondering about how to best protect an application or library from poorly written user-defined callbacks. 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 This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL) Top Experts Last 24hrsThis month Peter Leow 280 OriginalGriff 200 Maciej

Put in in a log file and swallow it, but don't show it to a user. –Tony Hopkinson Jan 30 '13 at 18:20 yes, I wouldn't scream at the

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