tree e23df5808a82b4793f7c1a5dacc58fc56df16141
parent 97b4c2a9293883a2418b8bba5485dc86b24460f7
author Keith Randall <keithr@alum.mit.edu> 1544738302 -0800
committer Keith Randall <khr@golang.org> 1545329598 +0000

unix: convert Darwin syscalls from raw to libSystem

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>