int brk(void *end_data_segment);
void *sbrk(intptr_t increment);
Calling sbrk() with an increment of
0
can be used to find the current location of the program break.
What is program break? Where does it start from,0x00?
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A program break is end of the process’s data segment. AKA…
As to where it starts from, it’s system dependent but probably not 0x00.