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Read Access Violation This Was Nullptr


The SAS task name is [TEMPLATE] ERROR: Read Access Violation TEMPLATE Exception occurred at (065837D1) Task Traceback The problem is most likely to occur when the style template contains a style Please contact technical support and provide them with the following traceback information: The SAS task name is [SQL] ERROR: Read Access Violation SQL Exception occurred at (0A61DB82) Task Traceback Address Frame Example of compact operators in quantum mechanics Metaprogramming: creating compiled functions from inter-dependent code blocks What is a non-vulgar synonym for this swear word meaning "an enormous amount"? 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 navigate here

See the How to Ask page for help clarifying this question.If this question can be reworded to fit the rules in the help center, please edit the question. Below is my rule of three ArrayStorage::ArrayStorage(){ myArray = new string[7079]; } ArrayStorage::~ArrayStorage(){ delete[] _data; delete[] myArray; } ArrayStorage::ArrayStorage(const ArrayStorage &A) { _size = A.size(); _data = new string [size()]; for I've been tearing my hair out for the past couple of days trying to figure out what is wrong with my program but I'm having no luck. We are working with nodes and linked lists but in a way that is different than any of the YouTube videos I have looked at on the subject. http://stackoverflow.com/questions/10086102/c-read-access-violation-error

Read Access Violation This Was Nullptr

bool Test_LinkedList::test8() { LinkedList list; bool isPassed = false; printTestMessage("search returns false on empty list"); isPassed = !list.search(42); printPassFail(isPassed); return (isPassed); } c++ share|improve this question asked Feb 21 '16 at asked 4 years ago viewed 8204 times active 4 years ago Related 0read access violation error3Odd access violation reading error / glDrawArrays usage2“Access violation reading location 0x0000000c” error2C++ “Access violation reading What does the expression 'seven for seven thirty ' mean?

Then it points me to my method in Node.cpp that is Node* Node::getNext() const { return m_next; } Sorry, I know this is a lot of text to read through but I assumed that if a was a node then even if a had a nullptr as it's getNext(), then b would just be set to nullptr. Why does the `reset` command include a delay? Read Access Violation 0xdddddddd Why do CDs and DVDs fill up from the centre outwards?

now what? Read Access Violation C When Calling a Function Hundreds of Times, How Do I know Which Call Failed? ERROR: Read Access Violation PRINT The problem is data dependent. Or it's merely an ordinary mistake?

First, it's pointless to set m_size to 0 and a to NULL since they will both go away at the end of the destructor. Exception Thrown: Read Access Violation. This Was Nullptr. Can the integral of a function be larger than function itself? 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 / Arts Culture / Recreation Hope this helps.

Read Access Violation C

To view the RateIT tab, click here. http://www.cplusplus.com/forum/beginner/191614/ Or zip the sources and upload that somewhere. Read Access Violation This Was Nullptr I'm guessing that this is null. C++ Access Violation Reading Location 0xffffffffffffffff How Can I Debug an Access Violation?

Learning resources Microsoft Virtual Academy Channel 9 MSDN Magazine Community Forums Blogs Codeplex Support Self support Programs BizSpark (for startups) Microsoft Imagine (for students) United States (English) Newsletter Privacy & cookies http://3ecommunications.net/access-violation/access-violation-at-address-in-module-read-of-address.html How Can I Find Out If My Pointers Corrupt a Memory Address? Are the following topics usually in an introductory Complex Analysis class: Julia sets, Fatou sets, Mandelbrot set, etc? Somewhere you are calling size() at an adress where you think there's an ArrayStorage but there isn't. Exception Thrown Read Access Violation C++

To view the RateIT tab, click here. If there is a handler for this exception, the program may be safely continued Hot Network Questions Anatomically Correct Slimes How to deal with an intern's lack of basic skills? Are the guns on a fighter jet fixed or can they be aimed? his comment is here It gets through the next 6 tests but then fails on the 7th (8th) with the same exact error.

Visual Studio 2015 Other Versions Visual Studio 2013 Visual Studio 2012 Visual Studio 2010 Visual Studio 2008 Visual Studio 2005 Visual Studio .NET 2003  For the latest documentation on Visual Studio Read Access Violation Visual Studio More important, the code will attempt to dereference a null pointer when the list is empty: Node* a = m_front; // okay, gets that head pointer Node* b = a->getNext(); // I lost my equals key.

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In the next iteration of stringToUpper, it attempts to dereference that invalid pointer which causes the crash. that makes sense. How Can I Use Debugger Windows While Debugging a Foreground Program? Unhandled Exception Access Violation Reading Location C++ You should probably get the full code reviewed at codereview.stackexchange.com I am sure there are some more subtleties we can look into. –Loki Astari Feb 21 '16 at 21:47 add a

size_type size() const { // return length of sequence return (this->_Mysize); <---------------------this line } I'm actually not sure if there is any problem at all, I have been dwelling on this To circumvent the problem, include the FROM option in the STYLE statement in PROC TEMPLATE to reference an existing style element from which to inherit all of the necessary style attributes. the new fails. (In general, if you have to test for self assignment, it's almost certain that your assignment operator is broken.) Either of these problems result in undefined behavior which http://3ecommunications.net/access-violation/access-violation-at-address-in-module-read-of-address-00000000.html Digital Hardness of Integers When jumping a car battery, why is it better to connect the red/positive cable first?

Still, it would be interesting to see where size was called. If the list hasn't had any objects added when it gets destroyed, then m_front is still NULL, so a is NULL, and a->getNext() has undefined behavior. –Pete Becker Feb 21 '16 Any other idea?? For example: proc template; define style mystyle; style graphcolors from graphcolors / 'gctext'=blue; end; run; Operating System and Release InformationProduct FamilyProductSystemSAS ReleaseReportedFixed*SAS SystemBase SASMicrosoft Windows Server 2012 R2 Std9.4 TS1M39.4 TS1M4Microsoft