Linux:
x86-64:16
I don't have any really really old systems.
x86-32: 8
Debien, 6.1.0-29-686-pae i686
Arm: 8
Arm64: 16
FreeBSD:
x86-64: 20 <===
x86-32: 8
Arm: 16
Arm64: 20 <===
NetBSD:
x86-64: 20 <===
x86-32: 12
Arm: 20 <===
long is 4, time_t is 8, timespec is 16
--
These are my opinions. I hate spam.