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Access Violation Reading Memory

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How does changing metrics help to find solutions to a partial differential equation? Checking other values such as x and y, which seem to be off entirely, I set them to 10 however when checking them they are both-572662307. ppValue = ldap_get_values( pLdapConnection, // Session Handle pEntry, // Current entry pAttribute); // Current attribute // Print status if no values are returned (NULL ptr) if(ppValue == NULL) { printf(": [NO I have got a pointer like this Expand|Select|Wrap|Line Numbers APerson*xyz=NULL; xyz=abc->Caller(); abc is initialized somewhere publicly. http://arnoldtechweb.com/access-violation/access-violation-reading-location-in-c.html

b) Introducing the test made the section made the code non-vectorizable. printf("ENTRY NUMBER %i \n", iCnt); // Get the first attribute name. I think I'd have to try it myself to see if I get the same here, but I'd need the gwin.h and it's .cpp or .lib file. Success!

Access Violation Reading Location Visual Studio

Equation system with two unknown variables more hot questions question feed lang-cpp about us tour help blog chat data legal privacy policy work here advertising info mobile contact us feedback Technology Top jimdempseyatthecove Thu, 04/02/2015 - 05:59 When a program does not produce this symptom in debug build, but does in release build, it is often an indication of use of uninitialized data. Windows (even 95) allocate "own private address space" for each process.

if it doesn't return a concrete Vertex object, then that's your error. –Chris Apr 14 '13 at 2:16 I have posted the findvertex method my mistake –Alex Alex Apr The program when run didn't even stop--it just hung on the Access Violation error. This should not be hard to do, intiialise them to NULL, then you can assign to them to point them to valid memory. Access Violation Reading Location 0x00000004 If you code has div zeros which are in fact bugs what other problems do you have?

I'll make the general comment that there is no single cause for access violations. Access Violation Reading Location 0xc0000005 How can I stop Alexa from ordering things if it hears a voice on TV? Last edited by elfeck; 08-20-2013 at 12:03 PM. 08-20-2013,01:38 PM #5 GClements View Profile View Forum Posts Private Message Senior Member OpenGL Guru Join Date Jun 2013 Posts 2,097 Originally Posted The if statement does a test for true or false only and does not access the location in the pointer.

If xyz is deleted, the deleter has to notify all APerson objects that have the pointer that is going to be deleted. Access Violation Reading Location 0xffffffffffffffff The error can be some distance from the point of crash... Has anyone else run into this before?   rob RSS Top 26 posts / 0 new Last post For more complete information about compiler optimizations, see our Optimization Notice. Not where it produces an illegal instruction, but where the effect is not immediately noticed until some time later.

Access Violation Reading Location 0xc0000005

Why doesn't my piece of code work? Contract at Awairness Inc. Access Violation Reading Location Visual Studio There is an msi installer for it, but it only works in visual studio as far as I am aware. Access Violation Reading Location 0x00000000 When that memory is no longer valid (it has been deleted or gone out of scope) reset there value back to NULL.

Expand|Select|Wrap|Line Numbers if(xyz==0xfeeefeee) { //dosomething } Nov 5 '07 #12 reply Expert Mod 5K+ P: 8,937 weaknessforcats so im still interested in learning how to check the address of pointer? have a peek at these guys Not the answer you're looking for? Graphlex 4x5 Lens Hood and Filters - How Do They Mount? Nov 2 '07 #11 reply P: 39 ycinar This looks like a case where abc->Caller() is returning an uninitialized pointer. Access Violation Reading Location C++ String

The program that I am writing currently has one class that will eventually be used to draw menus, using a library that my university has written themselves named Gwin. For example, in Inet::GetResponse(): int result = recv((*sock), buffer, strlen(buffer), 0) I don't think that strlen(buffer) will return anything meaningful. up vote 2 down vote Your header struct contains this array: char buffer[0x1000]; But you treat it as a null terminated C string in several places without making sure that it check over here Our operating system smartly catches this and says “No way- you can’t see my reserved memory location!”.

Nov 1 '07 #2 reply Expert Mod 5K+ P: 8,937 weaknessforcats try { if ( xyz ) // crashes here { abc = xyz->ID; } } catch (...) { //exception } C++ Access Violation Writing Location Hopefully the search picks them up. I hope that you have made sure of those interfaces being available.

I have got a pointer like this Code: ( text ) APerson* xyz = NULL; xyz = abc->Caller(); abc is initialized somewhere publicly.

  1. The Watson dialog is certainly a UI improvement over a "0xC0000005" error- I'd like to do a post on exactly what we do with said data when it's submitted.
  2. VC = UNIT(VA) ! (CALCULATION IS PROTECTED ALLOWING INPUT TO BE OVERWRITTEN)   real :: VA(3), VC(3)   real :: DUMAG, OOMAG !
  3. Can anyone advise on this please?
  4. The layout of your code is thus entirely different so any memory corruption will influence different things and have different symptoms (or none that may be evident).
  5. Top jimdempseyatthecove Thu, 04/09/2015 - 08:59 >>LOC(someVariable) < 4096 On most systems, the virtual memory from location 0 through Page Size-1 are not mapped to physical memory.
  6. Since it was returning a nullptr the program went ahead and deallocated all memory.
  7. Accessing an invalid memory location is a hardware exception (that is it is not obviously wrong in the software it is only when you look at the location and find no
  8. Apr 20, 2011 at 12:27pm UTC zlifanar (10) Sorry for tripple posting but: I removed the call to AddOptions() and it works fine, however then, when I end the program it
  9. I've broken my new MacBook Pro (with touchbar) like this, do I have to repair it?

thanks! Steve - Intel Developer Support Top Rob Wed, 04/01/2015 - 16:42 yeah that's about what i expected. It connects to an Active Directory server via LDAP and retrieves a list of unique values in a couple of attributes (ex: office location, department). C++ Map Access Violation Reading Location I suggest making a test run with array subscript bounds runtime check enabled.

It is dangerous to leave apointer floating with a random value. Apr 19, 2011 at 11:09pm UTC zlifanar (10) @ Moooce - The Gwin stuff is something that my university created. Jim Dempsey www.quickthreadprogramming.com Top Rob Wed, 04/01/2015 - 15:22 No, it is a fortran main. this content Jim, i have always had Fortran>Run-time>Check Array and String Bounds>Yes(/check:bounds) selected.  Also i've always had Fortran>Diagnostics>Compile Time Diagnostics>Show All (/warn:all) which includes (/warn:interfaces).  I'm unable to find gen-interfaces but I read

So this is probably where the error starts. I generally start at the point of error, see where the bad address comes from (analyzing the instruction stream and registers), and work backwards from there.