23 Oct
2017
23 Oct
'17
5 a.m.
macOS requires you to have a data section aligned to
4K, even if you
don't use it. The resulting binary is a little over 8K; again, mostly
zeros.
Not quite. The classic empty executable file for /bin/true works
on OS X. That is not just a clever trick;it's a natural consequence
of Kernighan's ancient prrecept: do nothing gracefully. Conceivably
the 4K data section is, too--if the page has no physical presence
until it is accessed.
Doug