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Access Violation Reading Location C++ Visual Studio


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current community chat Stack Overflow Meta Stack Overflow your communities Sign up or log in to customize your list. Our operating system shuts down this badly behaving application with an error like the following: Unhandled exception at 0x004173c8 in cpractice.exe: 0xC0000005: Access violation reading location 0x00000000. Reply With Quote December 13th, 2006,02:07 PM #3 verifier View Profile View Forum Posts Member Join Date Jun 2002 Location Sweden Posts 467 Re: Access violation reading location 0x00000000 Originally Posted An NT based operating system won't just throw an AV for OS reserved memory as well- if you try to access memory reserved by another application, the same error will apply.

Access Violation Reading Location C++ Visual Studio

If the function or subroutine is returning an array or section of an array that is local to the function or subroutine, the returned descriptors will work up until the point Did you change your compiler options? How big is the text area in a standard LaTeX document?

Can my employer see what I do on the internet when I am connected to the company network? In it, you'll get: The week's top questions and answers Important community announcements Questions that need answers see an example newsletter By subscribing, you agree to the privacy policy and terms Is there any way to use a sub-domain as your root domain Is a north-facing window recommended outside of the northern hemisphere? Unhandled Exception Access Violation Reading Location Visual Studio The third code snippet in #16 shows some machine instructions.

Check and make sure that the array invaders[] is what you think it should be. 0xc0000005: Access Violation Reading Location 0xffffffffffffffff Top mecej4 Wed, 04/08/2015 - 18:09 I do not think that it is worthwhile to work at the assembly level until you have a small enough reproducer code for which the Yep. http://stackoverflow.com/questions/27840760/unhandled-exception-access-violation-reading-location-0x00000000 vyrus001 commented Nov 15, 2016 currently running into a problem with this, as I can not use a mingw compiled binary to "load" (with memorymodule) a mingw compiled binary (the TLSCallback

The behaviour should be identical, but isn't. Access Violation Reading Location 0x00000000 C# You are free to catch them and ignore or hack, terminate process/thread or attach debugger application based on your own logic. face-on galaxy and edge-on galaxy 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 Life I guess that I have a class pointer somewhere that have been set back to zero and that i'm calling it without checking if it points on something valid.

0xc0000005: Access Violation Reading Location 0xffffffffffffffff

Jim Dempsey www.quickthreadprogramming.com Top dboggs Thu, 04/16/2015 - 14:25 I also, like many others, had a project that insisted on reporting runtime error 157 Access Violation, only in Release build when https://social.msdn.microsoft.com/Forums/en-US/9afea136-ca78-4070-baad-7e6951821c0a/access-violation-reading-location-0x00000000?forum=vcgeneral I have no c functions being called (i had thought these were the problem previously). Access Violation Reading Location C++ Visual Studio What you can't do is use them to point at something.   char *string_Pointer1 = NULL; char *string_Pointer2 = NULL;      if (string_Pointer1 == NULL) {     // OK, reads string_Pointer1 but Visual Studio Access Violation Reading Location 0x00000000. Reply Why does Software Crash #1 ???

I stumbled upon the fact that the linker subsystem switch had been left at /SUBSYSTEM:CONSOLE and changed it to /SUBSYSTEM:WINDOWS. http://p2pgsm.com/access-violation/0xc0000005-access-violation-arma-3.html To start viewing messages, select the forum that you want to visit from the selection below. In other cases where you want to embed some existing dll that's not really helpful though since you can't control how it was compiled. This means you're dereferencing a null pointer, likely in the constructor of Bar, or in some other code called by this constructor. Unhandled Exception Access Violation Reading Location Visual C++

You may need to modify the Link command line such that it does not strip out the debug information (for DOSTOP and/or anything else you are compiling with debug information). When the main program is written in C/C++, the C main program needs to call for_rtl_init_ to initialize the Fortran RTL and for_rtl_finish_ at the end of the C main program What the above is likely performing is edi is holding the base of the array edx is holding the index to the array the *8 indicates the element size is 8 http://p2pgsm.com/access-violation/c-access-violation-reading-location-0xcccccccc.html asked 5 years ago viewed 14999 times active 5 years ago Upcoming Events 2016 Community Moderator Election ends in 5 days Blog How We Make Money at Stack Overflow: 2016 Edition

subroutine sub() integer, pointer, dimension(:) :: iptr => NULL() integer :: i,j ! ! Access Violation Reading Location 0x00000004 I spent days trying the various debug techniques described here, and systematically eliminated various subroutine and library calls until the program had been reduced to doing nothing: The first executable statement was GO OUT AND VOTE Are there specific field names that shouldn't be used, ie reserved?

Unfortunately, Windows Vista was the first version to support this for dynamically loaded DLLs, but Windows XP was still the most widely used version.

VC = UNIT(VA) ! (CALCULATION IS PROTECTED ALLOWING INPUT TO BE OVERWRITTEN)   real :: VA(3), VC(3)   real :: DUMAG, OOMAG ! when I include the piece of code below. The problem is that the base of the array (edi) is 0. 0xc0000005: Access Violation Reading Location 0x0000000000000000. Thus - while trying to read anything from this area (including from address 0) in user-mode Win32 process you will get page fault that will be translated to exception with code

Forum New Posts FAQ Calendar Forum Actions Mark Forums Read Quick Links Today's Posts View Site Leaders What's New? I made the changes that i mentioned in my last post which prevented the  "access violation reading location..." error for that particular data set.  However today i ran across the same 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 http://p2pgsm.com/access-violation/0xc0000005-access-violation-reading-location-0x00000000.html The thread-safe statics feature can be disabled by using the /Zc:threadSafeInit- flag to avoid taking a dependency on the CRT.

PW_RFP = cross3(B0V_RFP,PA_RFP)/(NRM2(B0V_RFP)**2) ! <<setName("name"); <------ problematic line ** EDIT: array[i]->setName("name"); ** <------ problematic line .... , As Steve recommended, provide a test case. NT-based OS will always throw exceptions if you try to access memory specialy protected from you (just like Win9X one ;-).

Right? Thanks. I ran the program in inspector, and i get a critical item "Unhandled application exception" and a "Invalid memory access" on the same line, but i don't see anything obvious that Also, you don't seem to be updating i ever - meaning that you keep placing the same Invader object into location 0 of invaders[] at every loop iteration.

This implementation comes with the drawback that DLLs using it cannot be unloaded. Pointers in general are one of the most challenging topics in computer science, which is yet another reason this crash is so commonly seen. -Greg Comments (7) Cancel reply Name Place the break point on the PRINT statement in DOSTOP (this requires only 1 break point regardless of number of calls to DOSTOP and note that the sanity test can be Go to Solution.

You can add /RTCs option to your compiler (Run Time checks - Stack Frames). Reply With Quote December 14th, 2006,11:13 AM #15 verifier View Profile View Forum Posts Member Join Date Jun 2002 Location Sweden Posts 467 Re: Access violation reading location 0x00000000 Originally Posted There is no way to directly access memory of another process. You are in a debugger, aren't you? Vlad - MS MVP [2007 - 2012] - www.FeinSoftware.com Convenience and productivity tools for Microsoft Visual Studio: FeinWindows - replacement windows manager for Visual

Page 1 of 2 12 Last Jump to page: Results 1 to 15 of 16 Thread: [RESOLVED] Access violation reading location 0x00000000 Tweet Thread Tools Show Printable Version Email this Page… If this is just an error you made when reducing your code to the example, check how you calculate i in the real code; you could be exceeding the size of Also make a test run with gen-interfaces, check-interfaces. Access violation reading location 0x00000000.           Friday, September 21, 2007 12:47 AM Reply | Quote 0 Sign in to vote Depends on what you mean by "read

The error can be some distance from the point of crash... INTERFACE FUNCTION cross3(A,B) REAL(8), DIMENSION(3) :: cross3,A,B ENDFUNCTION ENDINTERFACE ENDMODULE DERIVEDTYPESI use these modules in the subroutine that crashes like so: USE BLAS95 USE DERIVEDTYPES  Jim, thanks for the code example, You could try doing without it.  What does /standard-semantics do for you here?