my $address = 5;
refaddr( \$address );
my $new_address = \$address;
$$new_address = $$new_address * 4;
sigqueue( $$, &POSIX::SIGRTMIN, $address );
my $smash = unsmash_sv( 0 + $address );
I can't understand what you are doing here. times 4? "(char *) 5" will of course crash, so will "(char *) 20". If you use Windows, learn what WONT seg fault, Virtual Memory Map Viewer (FOSS I think)
and VMMAP more advanced
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