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What does stack overflow mean?


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Answered 2021-02-08 14:19:02

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 the wrong input will cause it to go in that circle forever until the computer recognizes that the stack is overblown.

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Answered 2006-12-10 23:44:57

Stack is a specific amount of memory assigned to a program to use. A stack overflow means that this stack is full and you can't insert anymore data into it

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