Hi ,
I have a question regarding SIGSEGV in the context of process stack
growth. I have the
following piece of code.
#include<stdio.h>
main()
{
char *ptr;
char i=10;
int j;
ptr = &i;
for(j=0; j<3000; j++)
printf("%d -- %d\n",j, *(ptr+j));
}
I was expecting that the program will get a SIGSEGV immediately after
the first iteration of the for loop, since that
address doesn't belong to the process address space. But it didn't
happen. Then I thought that the stack is allocated
in terms of pages and hence thought that I'll get SIGSEGV after a PAGE
size. Even that didn't happen.
The program got SIGSEGV at different values of j on different OS. On
linux it occured at 1896.
I looked at the getrlimit value of stack size. Even that didn't match
with the value where I got SIGSEGV.
Any idea what's happening ?
Thanks & Regards,
Satish
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