How To Solve Stack Overflow Error In C
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How To Avoid Stack Overflow In C
x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; how to avoid stack overflow in java it only takes a minute: Sign up How does a “stack overflow” occur and how do you prevent it? up vote 26 down vote favorite 10 How does a stack overflow occur and what are the best ways to make
Stack Overflow In C Examples
sure it doesn't happen, or ways to prevent one, particularly on web servers, but other examples would be interesting as well? memory stack-overflow share|improve this question edited Jul 29 at 17:46 Kapol 4,2592727 asked Aug 25 '08 at 14:49 JasonMichael 88231621 add a comment| 9 Answers 9 active oldest votes up vote 42 down vote accepted Stack A stack, in this context, is the last in, first out buffer you place data while your program runs. Last in, first out how to avoid stack overflow in recursion java (LIFO) means that the last thing you put in is always the first thing you get back out - if you push 2 items on the stack, 'A' and then 'B', then the first thing you pop off the stack will be 'B', and the next thing is 'A'. When you call a function in your code, the next instruction after the function call is stored on the stack, and any storage space that might be overwritten by the function call. The function you call might use up more stack for its own local variables. When it's done, it frees up the local variable stack space it used, then returns to the previous function. Stack overflow A stack overflow is when you've used up more memory for the stack than your program was supposed to use. In embedded systems you might only have 256 bytes for the stack, and if each function takes up 32 bytes then you can only have function calls 8 deep - function 1 calls function 2 who calls function 3 who calls function 4 .... who calls function 8 who calls function 9, but function 9 overwrites memory outside the stack. This might overwrite memory, code, etc. Many programmers make this mistake by calling function A that then calls function B, that then calls function C, that then calls function A. It might work most of the time, but just once th
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How To Prevent Stack Overflow In C
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When Does Stack (process Stack) Overflow? What Are The Remedies?
Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only how to detect stack overflow in c takes a minute: Sign up How to handle or avoid a stack overflow in C++ up vote 11 down vote favorite 4 In C++ a stack overflow usually leads to an unrecoverable crash of the program. For programs that need http://stackoverflow.com/questions/26158/how-does-a-stack-overflow-occur-and-how-do-you-prevent-it to be really robust, this is an unacceptable behaviour, particularly because stack size is limited. A few questions about how to handle the problem. Is there a way to prevent stack overflow by a general technique. (A scalable, robust solution, that includes dealing with external libraries eating a lot of stack, etc.) Is there a way to handle stack overflows in case they occur? Preferably, the stack gets unwound until there's a handler to deal with that kinda issue. There are http://stackoverflow.com/questions/12146201/how-to-handle-or-avoid-a-stack-overflow-in-c languages out there, that have threads with expandable stacks. Is something like that possible in C++? Any other helpful comments on the solution of the C++ behaviour would be appreciated. c++ error-handling crash stack-overflow share|improve this question edited May 13 '13 at 14:40 asked Aug 27 '12 at 16:57 Ralph Tandetzky 9,58423371 4 support.microsoft.com/kb/315937 –Mooing Duck Aug 27 '12 at 16:59 1 The standard doesn't even mention the stack, you should specify which platform you are targeting; several platforms provide means to intercept the stack overflow or even get a "stack overflow alert" when the stack is almost exhausted. –Matteo Italia Aug 27 '12 at 17:00 3 Personally, I find that SO is not something to avoid, but to embrace. Just look at the great community here! –Brian Cain Aug 27 '12 at 17:01 2 Modern version of Mooing Duck's link? msdn.microsoft.com/en-us/library/89f73td2.aspx –Steve-o Aug 27 '12 at 17:18 2 Use a smart compiler: gcc -fsplit-stack, and you are as likely of having a stack overflow as you are to run out of memory. –Matthieu M. Aug 27 '12 at 17:20 | show 7 more comments 4 Answers 4 active oldest votes up vote 10 down vote accepted Handling a stack overflow is not the right solution, instead, you must ensure that your program does not overflow the stack. Do not allocate large variables on the stack (where what is "large" depends on the program). Ensur
may consist of a limited amount of address space, often determined at the start of the program. The size of the call stack depends on many factors, including https://en.wikipedia.org/wiki/Stack_overflow the programming language, machine architecture, multi-threading, and amount of available memory. When a program attempts to use more space than is available on the call stack (that is, when it attempts http://www.cplusplus.com/forum/beginner/81203/ to access memory beyond the call stack's bounds, which is essentially a buffer overflow), the stack is said to overflow, typically resulting in a program crash.[1] Contents 1 Infinite recursion 2 stack overflow Very deep recursion 3 Very large stack variables 4 See also 5 References 6 External links Infinite recursion[edit] Main article: Infinite recursion The most common cause of stack overflow is excessively deep or infinite recursion, in which a function calls itself so many times that the space needed to store the variables and information associated with each call is more than can fit stack overflow in on the stack.[2] An example of infinite recursion in C. int foo() { return foo(); } The function foo, when it is invoked, continues to invoke itself, allocating additional space on the stack each time, until the stack overflows resulting in a segmentation fault.[2] However, some compilers implement tail-call optimization, allowing infinite recursion of a specific sort—tail recursion—to occur without stack overflow. This works because tail-recursion calls do not take up additional stack space.[3] C compiler options will effectively enable tail-call optimization; compiling the above simple program using gcc with -O1 will result in a segmentation fault, but not when using -O2 or -O3, since these optimization levels imply the -foptimize-sibling-calls compiler option. Other languages, such as Scheme, require all implementations to include tail-recursion as part of the language standard.[4] Very deep recursion[edit] A recursive function that terminates in theory but causes a call stack buffer overflow in practice can be fixed by transforming the recursion into a loop and storing the function arguments in a stack. This is always possible, because the class of primitive recursive functions is equivalent to the class of LOOP computab
I have to do lots of matrix multiplication in my code. When the size of my matrices become bigger than 600*600, I GET an stack overflow error. I don't know how I have to solve this issue. I read somewhere that I have to use NEW to allocate array on heap. Does anyone know how I have to do this? Or any other solution for my problem. If you need to see my code, I can email it to you. Thanks Oct 8, 2012 at 7:37pm UTC Texan40 (645) 1
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const unsigned int vSize = 600*600; // instead of this int iVec[vSize]; // do this int *iVec = new int[vSize]; // and remember to delete [] iVec when you're done with it Oct 8, 2012 at 7:38pm UTC Zhuge (4639) This should have the info you need: http://cplusplus.com/doc/tutorial/dynamic/ Oct 8, 2012 at 9:27pm UTC hadis (4) Thanks for your reply. I didn't used something like: int iVec[vSize]; I always use malloc to define and allocate memory for my variable. I'm a little confused. for example, if I defined and initialized a matrix like this: 1
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float **m; m = (float**) malloc((nrow+1)*sizeof(float*)); m[0] = (float *)malloc((nrow*ncol+1)*sizeof(float)); for(int ii=1; ii