Parallel to CL 151938 for package x/sys/unix instead of syscall.
iOS needs to use these functions without the "64" postfix.
(The functions do exist, but the App Store bans their use.)
Updates golang/go#28984
Change-Id: I6b82950700cc8a1afca612844b05fa007574e008
Reviewed-on: https://go-review.googlesource.com/c/154658
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Call into libSystem (Darwin's libc equivalent) to do system calls.
Raw syscalls are not a supported ABI on Darwin, they want us to use
libSystem calls instead.
The stdlib has already been converted to this new regime. This
package is vendored into the stdlib, so we need to fix it also, then
vendor it in again.
Because this package isn't tied to a Go release, we need to keep the
old code around and use the new code only for 1.12 and up.
Update golang/go#17490
Change-Id: Idbcacff096b5bfeac871aa75dfd971570ac93322
Reviewed-on: https://go-review.googlesource.com/c/154179
Reviewed-by: Ian Lance Taylor <iant@golang.org>
