func (f *File) saveRef(n *ast.Expr, context astContext) {
	sel := (*n).(*ast.SelectorExpr)
	// For now, assume that the only instance of capital C is when
	// used as the imported package identifier.
	// The parser should take care of scoping in the future, so
	// that we will be able to distinguish a "top-level C" from a
	// local C.
	if l, ok := sel.X.(*ast.Ident); !ok || l.Name != "C" {
		return
	}
	if context == ctxAssign2 {

pkg syscall (freebsd-arm), const EOWNERDEAD Errno
pkg syscall (freebsd-arm), const EV_DROP = 4096
pkg syscall (freebsd-arm), const EV_DROP ideal-int
pkg syscall (freebsd-arm), const IFT_CARP = 248
pkg syscall (freebsd-arm), const IFT_CARP ideal-int
pkg syscall (freebsd-arm), const MAP_ALIGNED_SUPER = 16777216
pkg syscall (freebsd-arm), const MAP_ALIGNED_SUPER ideal-int
pkg syscall (freebsd-arm), const MAP_ALIGNMENT_MASK = -16777216

		return
	}

	// bail if file is not zip
	if err == ErrFormat {
		return
	}

	// bail here if no Files expected to be tested
	// (there may actually be files in the zip, but we don't care)
	if zt.File == nil {
		return
	}

	if z.Comment != zt.Comment {
		t.Errorf("comment=%q, want %q", z.Comment, zt.Comment)
	}
	if len(z.File) != len(zt.File) {

pkg syscall (netbsd-arm64-cgo), const IFT_BSC = 83
pkg syscall (netbsd-arm64-cgo), const IFT_BSC ideal-int
pkg syscall (netbsd-arm64-cgo), const IFT_CARP = 248
pkg syscall (netbsd-arm64-cgo), const IFT_CARP ideal-int
pkg syscall (netbsd-arm64-cgo), const IFT_CCTEMUL = 61
pkg syscall (netbsd-arm64-cgo), const IFT_CCTEMUL ideal-int
pkg syscall (netbsd-arm64-cgo), const IFT_CEPT = 19

		// Ignore warnings and random comments, with one
		// exception: newer GCC versions will sometimes emit
		// an error on a macro #define with a note referring
		// to where the expansion occurs. We care about where
		// the expansion occurs, so in that case treat the note
		// as an error.
		isError := strings.Contains(line, ": error:")
		isErrorNote := strings.Contains(line, ": note:") && sawUnmatchedErrors

pkg syscall (freebsd-arm64), const IFT_BRIDGE ideal-int
pkg syscall (freebsd-arm64), const IFT_BSC = 83
pkg syscall (freebsd-arm64), const IFT_BSC ideal-int
pkg syscall (freebsd-arm64), const IFT_CARP = 248
pkg syscall (freebsd-arm64), const IFT_CARP ideal-int
pkg syscall (freebsd-arm64), const IFT_CCTEMUL = 61
pkg syscall (freebsd-arm64), const IFT_CCTEMUL ideal-int
pkg syscall (freebsd-arm64), const IFT_CEPT = 19

pkg syscall (darwin-386), const IFT_ARCNETPLUS ideal-int
pkg syscall (darwin-386), const IFT_ATM ideal-int
pkg syscall (darwin-386), const IFT_BRIDGE ideal-int
pkg syscall (darwin-386), const IFT_CARP ideal-int
pkg syscall (darwin-386), const IFT_CELLULAR ideal-int
pkg syscall (darwin-386), const IFT_CEPT ideal-int
pkg syscall (darwin-386), const IFT_DS3 ideal-int
pkg syscall (darwin-386), const IFT_ENC ideal-int

pkg syscall (darwin-arm64), const IFT_ATM ideal-int
pkg syscall (darwin-arm64), const IFT_BRIDGE = 209
pkg syscall (darwin-arm64), const IFT_BRIDGE ideal-int
pkg syscall (darwin-arm64), const IFT_CARP = 248
pkg syscall (darwin-arm64), const IFT_CARP ideal-int
pkg syscall (darwin-arm64), const IFT_CELLULAR = 255
pkg syscall (darwin-arm64), const IFT_CELLULAR ideal-int
pkg syscall (darwin-arm64), const IFT_CEPT = 19

							for _, id := range spec.Names {
								mark(id)
							}
						case *ast.TypeSpec:
							mark(spec.Name)
						}
					}
				}
				return true // look at specs
			case *ast.FuncDecl:
				if isDeprecated(n.Doc) {
					mark(n.Name)
				}
				return false
			case *ast.TypeSpec:
				if isDeprecated(n.Doc) {
					mark(n.Name)
				}

pkg net/http, type Transport struct, DialTLS func(string, string) (net.Conn, error)

# CL 132750043 net/http/httputil: Pass a Logger to ReverseProxy, allowing the user to control logging., Mark Theunissen <mark******@****.***>
pkg net/http/httputil, type ReverseProxy struct, ErrorLog *log.Logger

# CL 148370043 os, syscall: add Unsetenv, Brad Fitzpatrick <******@****.***>
pkg os, func Unsetenv(string) error