Select Code to Download

$ perl -wE'say length pack "sslli", 0, 0, 0, 0;'
16

$ perl -wE'say length pack "sslli", 0, 0, 0, 0, 0;'
16

$ cat a.c
#include <fcntl.h>
...
flock.l_start:  8 @  8
flock.l_len:    8 @ 16
flock.l_pid:    4 @ 24

$ perl -wE'say length pack "s s x4 q q L x4", 0, 0, 0, 0, 0;'
32