gcc/libobjc/objc-private
..
README
accessors.h
common.h
error.h
hash.h
module-abi-8.h
objc-list.h
objc-sync.h
protocols.h
runtime.h
sarray.h
selector.h

README

This directory contains headers that are private to the runtime and
that are only included while the runtime is being compiled.  They are
not installed, so developers using the library can't actually even see
them.