h.Mode |= c_ISGID
	}
	if fm&fs.ModeSticky != 0 {
		h.Mode |= c_ISVTX
	}
	// If possible, populate additional fields from OS-specific
	// FileInfo fields.
	if sys, ok := fi.Sys().(*Header); ok {
		// This FileInfo came from a Header (not the OS). Use the
		// original Header to populate all remaining fields.
		h.Uid = sys.Uid
		h.Gid = sys.Gid
		h.Uname = sys.Uname
		h.Gname = sys.Gname

pkg syscall (linux-386), const MAP_LOCKED ideal-int
pkg syscall (linux-386), const MAP_NONBLOCK ideal-int
pkg syscall (linux-386), const MAP_NORESERVE ideal-int
pkg syscall (linux-386), const MAP_POPULATE ideal-int
pkg syscall (linux-386), const MAP_PRIVATE ideal-int
pkg syscall (linux-386), const MAP_SHARED ideal-int
pkg syscall (linux-386), const MAP_STACK ideal-int
pkg syscall (linux-386), const MAP_TYPE ideal-int

			t.Errorf("splitUSTARPath(%q):\ngot  (%q, %q, %v)\nwant (%q, %q, %v)",
				v.input, prefix, suffix, ok, v.prefix, v.suffix, v.ok)
		}
	}
}

// TestIssue12594 tests that the Writer does not attempt to populate the prefix
// field when encoding a header in the GNU format. The prefix field is valid
// in USTAR and PAX, but not GNU.
func TestIssue12594(t *testing.T) {
	names := []string{

pkg syscall (linux-386), const MAP_LOCKED = 8192
pkg syscall (linux-386), const MAP_NONBLOCK = 65536
pkg syscall (linux-386), const MAP_NORESERVE = 16384
pkg syscall (linux-386), const MAP_POPULATE = 32768
pkg syscall (linux-386), const MAP_PRIVATE = 2
pkg syscall (linux-386), const MAP_SHARED = 1
pkg syscall (linux-386), const MAP_STACK = 131072
pkg syscall (linux-386), const MAP_TYPE = 15

pkg syscall (linux-arm-cgo), const MAP_LOCKED ideal-int
pkg syscall (linux-arm-cgo), const MAP_NONBLOCK ideal-int
pkg syscall (linux-arm-cgo), const MAP_NORESERVE ideal-int
pkg syscall (linux-arm-cgo), const MAP_POPULATE ideal-int
pkg syscall (linux-arm-cgo), const MAP_PRIVATE ideal-int
pkg syscall (linux-arm-cgo), const MAP_SHARED ideal-int
pkg syscall (linux-arm-cgo), const MAP_TYPE ideal-int