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

pkg syscall (darwin-386), const IFT_ARCNETPLUS = 36
pkg syscall (darwin-386), const IFT_ATM = 37
pkg syscall (darwin-386), const IFT_BRIDGE = 209
pkg syscall (darwin-386), const IFT_CARP = 248
pkg syscall (darwin-386), const IFT_CELLULAR = 255
pkg syscall (darwin-386), const IFT_CEPT = 19
pkg syscall (darwin-386), const IFT_DS3 = 30
pkg syscall (darwin-386), const IFT_ENC = 244

</pre>

<!--
These conversions also apply to type parameters with suitable core types.
Determine if we can simply use core type instead of underlying type here,
of if the general conversion rules take care of this.
-->

<p>
A <code>Pointer</code> is a <a href="#Pointer_types">pointer type</a> but a <code>Pointer</code>
value may not be <a href="#Address_operators">dereferenced</a>.

pkg syscall (freebsd-386-cgo), const IFT_BGPPOLICYACCOUNTING ideal-int
pkg syscall (freebsd-386-cgo), const IFT_BRIDGE ideal-int
pkg syscall (freebsd-386-cgo), const IFT_BSC ideal-int
pkg syscall (freebsd-386-cgo), const IFT_CARP ideal-int
pkg syscall (freebsd-386-cgo), const IFT_CCTEMUL ideal-int
pkg syscall (freebsd-386-cgo), const IFT_CEPT ideal-int
pkg syscall (freebsd-386-cgo), const IFT_CES ideal-int

		// 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-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