How to write a signal handler to catch SIGSEGV?

Question

I want to write a signal handler to catch SIGSEGV. I protect a block of memory for read or write using

char *buffer;
char *p;
char a;
int pagesize = 4096;

         


        

Answer 1

You can recover from SIGSEGV on linux. Also you can recover from segmentation faults on Windows (you'll see a structured exception instead of a signal). But the POSIX standard doesn't guarantee recovery, so your code will be very non-portable.

Take a look at libsigsegv.