Access Violation Writing Location Error
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Access Violation Writing Location C++
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Access Violation Writing Location 0xfdfdfdfd
2 down vote favorite Using: MSVS2012 Code elemalg.h #include
Access Violation Writing Location 0xfeeefeee
difficultyLevel = "algVH"; } std::ifstream fin(difficultyLevel + ".txt"); while (std::getline(fin, question)) { questions.push_back(question); } fin.close(); std::ifstream fin2(difficultyLevel + "Answers.txt"); while (std::getline(fin2, answerToRead)) { answers.push_back(answerToRead); } fin2.close(); return questions; } MathTutor.cpp #includes etc ElemAlg *ea; ea->GetQuiz(1); GetQuiz is definitely passed an integer between 1 and 4, this is verified before the method is called difficultyLevel is a string defined in the header file. The compiler throws an Unhandled exception and Access violation writing location ... as soon as it hits the first if function. If I remove the if functions and define difficultyLevel as algE just for testing the same problem. If I remove difficultyLevel entirely and just open the file as "algE.txt" and "algEAnswers" then I get the same problem but at a different memory location once the code hits the while loop. c++ access-violation unhandled-exception share|improve this question edited Oct 20 '14 at 15:11 asked Oct 20 '14 at 14:45 user3001499 1991516 What is difficultyLevel exactly? –πάντα ῥεῖ Oct 20 '14 at 14:48 The parameter should be verified inside the function with an assert and not outside. If questions is a global variable, I don't know why you try to return it. –Neil
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Access Violation Writing Location Assembly
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Languages , Windows Desktop Development > Visual C++ Question 0 Sign in to vote Unhandled exception at 0x0040161b in PcsPrintSrvc500.exe: 0xC0000005: Access violation writing https://social.msdn.microsoft.com/Forums/vstudio/en-US/d5db392e-8a21-4ed0-a67c-0a84e3566441/0xc0000005-access-violation-writing-location?forum=vcgeneral location 0x02fffdd8. Monday, June 23, 2014 11:19 AM Reply | Quote Answers 0 Sign in to vote Did you write PcsPrintSrvc500.exe? You have a bug. (And you haven't given nearly http://cboard.cprogramming.com/cplusplus-programming/133939-access-violation-writing-member-variable.html enough information to determine exactly why it happened. I strongly suggest you ask questions in this forum by providing a bit of background and much more detail. But let me access violation put on my psychic helmet and see what I can do for you.) Almost all C++ exe programs are loaded at 0x00400000, and your exception is at 0x0040161b, which means that it is only about 0x161b bytes into your main module code. So this suggests that there is some code in your PcsPrintSrvc500.exe project that has a bug in it. And access violation writing it is very likely code you wrote that is causing the problem (as opposed to you using a 3rd party library incorrectly or something like that.) 0xC0000005 is the code for an access violation. It happens when you access (read or write) an address that is not mapped to any physical memory or is protected (tried to write to read-only memory, for example). In this case your program tried to access 0x02fffdd8. The address 0x02fffdd8 is most likely just past the end of a heap block or just before a large mapped buffer. For example, if I allocate memory with malloc and I allocate 0x1000000 bytes (sixteen million bytes) then I might get an address like 0x01c90040 (ending at 0x02c9003F). Your address is pretty close to where the heap would put a big memory block of that size. On the other hand, the 0x02fffdd8 bit looks suspiciously like it is just before a big round number address of 0x03000000. It's only 228 bytes before that big round number. Now that could be the base address of some dll
Programming Boards C++ Programming Access Violation writing to a member variable Getting started with C or C++ | C Tutorial | C++ Tutorial | C and C++ FAQ | Get a compiler | Fixes for common problems Thread: Access Violation writing to a member variable Thread Tools Show Printable Version Email this Page… Subscribe to this Thread… Display Linear Mode Switch to Hybrid Mode Switch to Threaded Mode 01-19-2011 #1 insanoflex View Profile View Forum Posts Registered User Join Date Jan 2011 Posts 5 Access Violation writing to a member variable I am getting a access violation error when I run my program. I am using Visual C++ 2010. The compiler is giving me this error: First-chance exception at 0x00291709 in RobotWars.exe: 0xC0000005: Access violation writing location 0xcdcdcdcd. Unhandled exception at 0x00291709 in RobotWars.exe: 0xC0000005: Access violation writing location 0xcdcdcdcd. I'm new, so this looks like Greek. My compiler is pointing to this code: Code: void GameDrawer::setLevel(Level* level) { m_currentLevel = level; } The .h file for GameDrawer: Code: #ifndef GAMEDRAWER_H #define GAMEDRAWER_H #include "Level.h" #include "Game.h" #include "glut.h" //The main drawer for the game, draws everything to the screen. class GameDrawer { Level* m_currentLevel; //the current level to draw //drawing functions void drawFloor(); void drawCeiling(); public: GameDrawer(); ~GameDrawer(); void setLevel(Level* level); //sets the current level to draw void draw(); //draws the current level/menu to the screen }; #endif The function that the compiler is pointing to is invoked in the Game object's constructor (with related function definitions): Code: Game::Game() { m_currentLevelNum = 0; m_currentLevel = 0; createLevel(64,64); } void Game::createLevel(short w, short h) { if (m_currentLevel) destroyLevel(); m_currentLevel = new Level(w,h); m_drawer->setLevel(m_currentLevel); } void Game::destroyLevel() { delete m_currentLevel; m_currentLevel = 0; } I can edit this post with more information as needed. I really don't know what could be causing this. Any help would be appreciated. 01-20-2011 #2 Salem View Profile View Forum Posts and the hat of int overfl Join Date Aug 2001 Location Th