Stack overflow in c. 444, then the output should be 3.

Stack overflow in c char* ptr = "HELLO" will work basically the same as char *ptr; ptr = "HELLO" as in the answer, except that the pointer is initialized to point at the string literal instead of being assigned afterward. One solution follows: signed_result = (unsigned int)one_argument + (unsigned int)other_argument; The above solution involves implementation-defined behavior in the final conversion from unsigned to int but do not invoke undefined behavior. A macro can be written this way: #define SWAP(T, a, b) do { T tmp = a; a = b; b = tmp; } while (0) I would also recommend Kernigen and Ritchies "The C programming language" the definitive book on C before C++, and, one of the best pieces of technical writing ever. #define FALSE = 0 #define TRUE = !FALSE This might be otherwise under alien platform to DOS or Intel-based processors. Theres a "Buffer Security Check" option. To learn more, see our tips on writing great Feb 26, 2010 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. h> void StackOverFlow Nov 2, 2015 · Stack memory allocation (function variables, local variables) can be problematic when your stack is too "deep" and you overflow the memory available to stack allocations. 18 hours ago · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. 2 days ago · I know the C standard itself has no concept of stack unwinding, but I'm aware of mechanisms like setjmp/longjmp on POSIX, but I want to do it so that I can unwind a specific number of frames (not including inline functions) without setting the jump point first (via setjmp), while also executing the instructions in the exception record Sep 9, 2012 · Overflow in C is a godawful mess. In this article, we will use the array data structure to store the stack elements and use a pointer to keep track of the topmost element of the stack. I can store one value in the stack by doing: stack<string> stack; // STL Stack object Vehicle v; //vehicle struct object stack. In order to directly access and control the stack pointer, you must write assembler. To learn more, see our tips on writing great Nov 24, 2022 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. But what I know if the program gets segmentation fault, the program should crash and exit at that point. 1 day ago · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. 1. For example: MLT video framework returns a void * for newly allocated memory. May 17, 2014 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. use of malloc will need casting). But the operand/result of expression is implicitly converted to data type bool (boolean 0 means false, Non zero means True). C++ has the same statements, worded a bit differently: 5 Expressions, paragraph 4: Jul 7, 2016 · The Reason you are getting a Overflow in the first printf statement is because you have defined the char as a signed char and if You print them in an %d format which is integer You'll get a range from 0-127 and -1 to -128 because as we all know char consume one byte in memory and by assigning them as signed character you'll divide them in positive and negative values in simple words a unsigned Overflow-safe modular addition. See examples of common causes and solutions for each type of overflow. So this scenario will lead to linking error: Source 1 : const int global = 255; //wrong way to make a definition of global const variable in C++ What is the difference between an allocated char* and char[25]?. For programs that need to be really robust, this is an unacceptable behaviour, particularly because stack size is limited. It sounds like a recursive algorithm may not be suitable for the kind of data you need to process, but maybe you can improve things by using fewer local variables and/or parameters in each method invocation, to make the stack frames Jan 16, 2013 · A stack overflow should not cause trouble neither to the Operating System nor to the computer. I have searched the net and found that this occurs if the program gets segmentation fault. The operand or the expression must be of arithmetic or pointer type. To learn more, see our tips on writing great Apr 15, 2011 · When I debug this running program with gdb and backtrace stack,what I found is the corrupt stack: "Previous frame inner to this frame (corrupt stack?)". X*op2. 3 3). Dec 19, 2012 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Apr 8, 2021 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company A computation involving unsigned operands can never overflow, because a result that cannot be represented by the resulting unsigned integer type is reduced modulo the number that is one greater than the largest value that can be represented by the resulting type. If a C/C++ program leaks void * memory, it's definitely leaking something. I want to store all the values in the struct in a stack. 44 or if number is 99999. push_back(i); }; without having declared a constructor, Stack Mar 6, 2013 · The keyword static is one which has several meanings in C++ that I find very confusing and I can never bend my mind around how its actually supposed to work. Should a (or b) exceed the uintN_t sum, then the mathematically sum was an uintN_t overflow and subtraction of m will "mod" the mathematically sum into the range of uintN_t. Otherwise you are not in the scope of C. c and win32/foo. Apr 15, 2019 · __mul = function(op1, op2) if (rawequal (type (op1), "table") and rawequal (type (op2), "table")) then return Vector3. This will perform a case-insensitive comparison on 8-bit chars, so long as the locale is POSIX. c, osx/foo. In C/C++, heap memory is controlled by programmer as there is no automatic garbage collection. Provide details and share your research! But avoid … Asking for help, clarification, or responding to other answers. C has rules that must be followed. Dec 18, 2009 · There is no compiler independent way of doing this, as neither the C (nor the C++) standards say that the floating point math types must support NAN or INF. e. But 2's-complement defines a storage format; it doesn't by itself define the behavior on overflow. You can write an entire program without using the heap. Nov 13, 2024 · In C, we can implement a stack using an array or a linked list. An undefined thing is different than no thing. The reference points to the data. the pointee, but of course that didn't retroactively affect the design of C. However, not declaring is a bad practice and it will create problems if you are using a copy constructor or any other constructor with parameters. Jun 25, 2009 · In C/C++ void means "untyped memory". To learn more, see our tips on writing great Dec 31, 2011 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Apr 7, 2011 · You may find that your compiler can help. First of all, the pointer points to the address location of the data. Nov 7, 2017 · If the stack is full and does not contain enough space to accept the given item, the stack is then considered to be in an overflow state. Every new call to the recursive function takes more stack until eventually your program uses up the entire stack. g. Z*op2. In particular, C does not require functions to be declared before they are used. The easiest way to handle that is to still calculate count, as you do, but instead of creating the array on the stack by just declaring it as a count-sized array, you do struct_t* writedata = new struct_t[count];. The C++ way of doing that is with new and delete. Dec 23, 2022 · Stack overflow is a common problem in computer programming, and it can lead to unpredictable behavior and security vulnerabilities in C / C++ programs. Apr 7, 2010 · You can't do this as a function call in C because of the need for polymorphism of the returned object. 4234 then output should be 99999. The symptoms of UB vary widely. In C and C++, char* or char[] will take a pointer to a single char as a parameter and will track along the memory until a 0 memory value is reached (often called the null terminator). Dec 31, 2014 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Jan 11, 2010 · Signed overflow is undefined in C, and that's for real. But initializing everything to zero seems kind of silly. A pop either reveals previously concealed items, or results in an empty stack, but if the stack is empty then it goes into underflow state (It Sep 13, 2011 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. Nov 23, 2017 · Using static_cast to cast an object to a type it doesn't actually have yields undefined behavior. To learn more, see our tips on writing great Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company May 8, 2017 · Another option, instead of using std::vector, is to manage the memory yourself. How exactly this works is operating system dependent. Jan 1, 2019 · If char were the same width as int (a hypothetical possibility discussed elsewhere on Stack Overflow), and char c = 250; were changed to, say, char c = INT_MAX-5;, then c would be initialized without problem, but c += 8; would overflow during the arithmetic, and then the behavior is not defined by the C standard. Apr 15, 2016 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Jun 2, 2014 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Nov 25, 2013 · This is the original, canonical example of an eternal loop. To learn more, see our tips on writing great Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. 42, How c Oct 9, 2014 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Nov 22, 2011 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company May 6, 2022 · Overflow in the C standard is when the result of an operation is not representable in the type. My guess would be that it reserves a bit of extra memory and writes a known sequence in there. h> #include <windows. Jun 8, 2012 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Nov 24, 2011 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company On Windows a stack overflow exception will be generated. You ask about extern in C++, not in C and I don't know why there is no answer mentioning the case when extern comes with const in C++. In plain language, you can return malloc-ed string from a function; you cannot do the same with char[25] allocated in the automatic storage, because its memory will be reclaimed upon return from the function. In C++ you could do this as a templated overloaded function call (probably for operator[]), but C doesn't have such features. with pointer arithmetics): The structure elements are usually aligned at 4 Byte boundaries (on 32 bit). or switch to using std::string. So a macro was needed to do the type casting in the expression. Jan 3, 2013 · There is no explicit bounds checking, or exception throwing on strcpy - it's a C function. To learn more, see our tips on writing great But C++ tries to move away from it: The design of C++ references does not even allow such top of the block grouping. Apr 11, 2011 · Once you add 1 to INT_MAX, you end up getting INT_MIN (i. The lifetime of a malloc-ed string is not limited by the scope of its declaration. Apr 2, 2019 · I think, it would be nice and informative to explain why signed int overflow undefined, whereas unsigned apperantly isn't. From what I understand there is static storage duration, which means that it lasts for the lifetime of the program in the case of a global, but when you're talking about a local, it means that it's zero initialized by default. For example, in Visual Studio 2008, check the project properties - C/C++ - Code Generation page. void does not mean "nothing". X*op2, op1. 5: for (;;) { } is an "infinite" loop, presumably to be broken by other means, such as a break or return. For both solutions (shared libs or different linking) you would have foo_linux. Mar 30, 2011 · It's an accident of C and C++ syntax that you can write that declaration as either int *p; or int* p;. To learn more, see our tips on writing great Mar 9, 2015 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Nov 15, 2012 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. In a structure, the . c (or a better way is linux/foo. Sep 15, 2012 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Dec 5, 2021 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Jan 14, 2012 · There is no standard function in C to swap two variables. c) and then compile and link with the appropriate one. To provide two (or more) functions that perform similar, closely related things, differentiated by the types and/or number of arguments it accepts. I ask because I'm commenting up my C project and I'm pretty straight on the indenting and it compiles fully (90/90 thank you Stackoverflow) but I want to get 10/10 on the style points. To learn more, see our tips on writing great If you are on a POSIX system, you can use strcasecmp. For instance, if you created the constructor: Stack(T i) { top = i; data. Y, op1. May 21, 2020 · If I have 2 int or long long variables, call them a and b, and I want to compute the sum (a + b) mod p, where p is a large prime integer, how can I utilize the modulo operator in C++ to achieve the Jan 26, 2017 · In the C programming language, a string such as "2147483649" overflows as an int since the largest unsigned int is 2147483647. May 11, 2017 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company string * and string& differ in a couple of ways. Dec 4, 2022 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Jun 25, 2009 · Actually, I've gone one step further here, and implemented a class called Flags that provides member functions for manipulation of bit flags. When a process tries to allocate more data in its stack than space is available, the OS detects it (usually via an exception) and terminates the process. C++ strings can contain embedded \0 characters, know their length without counting. Hot Network Questions. 0. Mar 15, 2019 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand Apr 4, 2010 · Note that C++ smart pointers have their own methods (like use_count() for shared_ptrs), so there it is necessary to distinguish between calling a method on the pointer vs. To learn more, see our tips on writing great Oct 21, 2013 · and probably this warning as well on overflow: warning: overflow in implicit constant conversion [-Woverflow] the value that y obtains is a little more interesting since character constant has an integer value it can not just be taking the first character, the multi-character constant has to take an integer value and then be converted to char. But all this is then outside the scope of the C language and therefore not of general interest. If the no-arg constructor does not exist then again you are not even allowed to separate both! Jan 2, 2013 · C++ Stack Overflow Exception, possibly due to recursion. 4. The answer depends upon the implementation of the compiler. I am new in C++ , i just want to output my point number up to 2 digits. In both cases, it's parsed as int (*p);-- in other words, the * is always associated with the variable name, not the type specifier. new(op1. But I used to use both C and ASM together writing graphic libraries and graphical IDE. Is there a way to prevent stack overflow by a general technique. license); How can I store a the whole struct in the stack so I can later access the char, int, and, string? Jul 22, 2012 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. Dec 15, 2018 · With char arr[10], arr does not "hold" the address; rather, it is implicitly converted into a pointer in a variety of perhaps-unexpected ways. push(v. Overflow during unsigned arithmetic or conversion to an unsigned type results in wraping modulo 2 n; Overflow during conversion to a signed type is implementation defined, most implementations will wrap modulo 2 n but some may not. Depending on your target you might need to take padding or packing into account if you want to access the elements via low-level functions (f. Nov 8, 2017 · Therefore, it is impossible to produce a "stack underflow" in pure C. just like if number is 3. c, foo_win32. This may be why you're asking. When I want to convert strings of integers to ints, how do I go about checking for these overflow cases? Feb 24, 2016 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company I know that sometimes if you don't initialize an int, you will get a random number if you print the integer. To learn more, see our tips on writing great Jun 10, 2011 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Oct 4, 2009 · unsigned short a, b; unsigned long c; These two statements will do different things: c = (unsigned long)(a + b); c = (unsigned long)a + b; The first one -- the one you showed -- will first add the numbers as unsigned shorts, discarding any overflow -- and then expand to an unsigned long. Jul 4, 2013 · If you are compiling the C code together, as part of your project, with your C++ code, you should just need to include the header files as per usual, and use the C++ compiler mode to compile the code - however, some C code won't compile "cleanly" with a C++ compiler (e. Whether to use while or for is largely a matter of personal preference. Anyway, the greater issue is that, since your answer tries to be generic enough, and because IMO it should provide a snippet that is also working under asynchronous interrupts: I would either use sig_atomic_t or atomic_bool types there. You should think of C as basically dressed-up assembly language. Most C implementations (compilers) just used whatever overflow behaviour was easiest to implement with the integer representation it used. However, in int x = 10000000000; , 10,000,000,000 is converted to type int , and this conversion is defined to produce an implementation-defined result (that is implicitly representable in int ) or an implementation-defined result (C 2018 6. Nov 19, 2012 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Mar 31, 2019 · C is a very low-level language, so it permits you to create almost any legal object (. There's nothing that says UB can't allow the derived member function to be called successfully (but there's nothing that guarantees that it will, so don't count on it). If that sequence gets modified, it assumes a buffer overrun. Oct 4, 2011 · Either increase the size of the stack (which can be done with the STACK linker option) or -- and this is a much better option -- improve or replace your algorithm. Y*op2. My base class uses atomic operations (handy when setting and testing in different threads), and I've even derived from it in a few cases to store flag state in the Windows registry automatically when bits are changed. c, foo_osx. Jan 22, 2014 · In most implementations, yes. You cannot pop from the stack in C, nor can you set the stack pointer from C. is used to reference directly to a member within the structure, while -> is used to reference the member of a pointed to structure. Mar 10, 2023 · In C, C++, and Java, memory can be allocated on either a stack or a heap. not portable, (this example only overflows on x86 32bit). This function is not part of standard C, though, nor is it available on Windows. 444, then the output should be 3. To learn more, see our tips on writing great In C++ a stack overflow usually leads to an unrecoverable crash of the program. The concept of a stack is something on an even lower level than the C language. Z*op2); end end, 18 hours ago · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. Jul 30, 2019 · Learn the difference between heap and stack, and how to avoid heap and stack overflow in C programming. In the ancient C bible The C Programming Language by Kernighan and Ritchie, we can read that: K&R 2nd ed 3. If you separate declaration and initialization of a C++ local object then you pay the cost of an extra constructor for nothing. First establish that a<m and b<m with the usual % m. #1. Feb 16, 2009 · As others have already said, a structure is simply a grouping of variables. overflow). . Stack overflow at runtime. In C, there's no reliable way to test for overflow, because all 32 bytes are used to represent the integer (and not a state flag). The ISO C language standard permits 2's-complement, 1's-complement, and sign-and-magnitude representations for signed integer types, but explicitly states that the behavior on arithmetic overflow is undefined. Oct 4, 2014 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. The pop operation removes an item from the top of the stack. Edit: I just checked the wording of the C++ standard, and it says that these functions (members of the templated class numeric_limits): quiet_NaN() signalling_NaN() Oct 29, 2013 · You overload functions for three reasons:. Z); end if (rawequal (type (op2), "number")) then return Vector3. I don't know you specific situation. To learn more, see our tips on writing great Jun 28, 2010 · C is a very good language to learn IMO, for the very same reasons one of the co-founders of stack overflow (Joel Spolsky) mentions in this article: May 10, 2017 · Stack(){}; or. To learn more, see our tips on writing great @DirkEddelbuettel I stand corrected, I thought my improvements will reflect your original intentions more, sorry if that did not happen. A few questions about how to handle the problem. You can only test to see if the number you get will be within a valid range, as in your link. Mar 20, 2020 · And you may want to look at the Assembler code to see what happens. #2 should write the function completely in assembler, mixing c and asm without completely knowing the target compiler can be dangerous, as this example, the compiler could insert code after the math that could reset the overflow flag (may work for gcc but fail for intel/llvm) and may change depending on flags into the compiler 2 days ago · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. Fortunately, there are a number of ways developers can detect and address potential stack overflow problems. The most common way this happens is when your program has a recursive function which calls itself forever. Avoid Bjarne Soustrups "C++" book, its a very hard read and more about how/why to define programming syntax than how to use the langauge. 3. C is not a specification language for creating Assembler code. The following windows code illustrates this: #include <stdio. In C++, a const variable has internal linkage by default (not like C). Jan 18, 2024 · Understanding what causes a stack overflow and how to avoid it is essential for any programmer working in C or other low-level languages. Y*op2, op1. X, op1. The negation operator (!) simply just reverses the meaning of its operand. The heap is for objects that need to be accessed from multiple threads or throughout the program lifecycle. For example: On Windows, you can use _control87 to unmask _EM_OVERFLOW so that you'll get a C++ exception on overflow. Any modern OS provides an isolated address space to each process. Dec 30, 2012 · In C, -> is very similar to . Jun 2, 2017 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Jul 8, 2018 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. – Feb 15, 2013 · If you enable floating point exceptions, then the FPU can throw an exception on overflow. , but deals with pointers. o) file that you can conceive of. Add updated a and b. If you want to use C functions in C++, you're going to have to take on the responsibility of checking for bounds etc. Making statements based on opinion; back them up with references or personal experience. Stack(): default; or not declaring a constructor. Back when I was writing C programs, we have always used #2. Stack Overflow in rather short (30 lines) program. Aug 25, 2008 · Stack overflow occurs when your program uses up the entire stack. Stack allocation happens in the function call stack, where each function gets its own memory for variables. xjklcqp yjiis hemz hcmw aofjz brjou sui juut dgegk xausngs icd iyln mbd gzocxqy dekkw