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Stack vs Heap
Where your variables actually live: automatic stack storage vs manual heap allocation, and why returning a pointer to a local is the classic firmware crash.
25 min read
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What's the difference between stack and heap allocation?What's wrong with returning a pointer to a local variable?Sketch the memory layout of a running C program.When would you choose the heap over the stack?What happens on a stack overflow, and how does it differ between a desktop and a no-MMU MCU?
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