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 {

		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) {

		// 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

<code>cmd/internal/obj</code> package,
represents an invalid instruction).
The sequence of the <code>A</code> names has nothing to do with the actual
encoding of the machine instructions.
The <code>cmd/internal/obj</code> package takes care of that detail.
</p>

<p>
The instructions for both the 386 and AMD64 architectures are listed in
<code>cmd/internal/obj/x86/a.out.go</code>.
</p>

<p>

pkg syscall (freebsd-riscv64), const IFT_BSC = 83 #53466
pkg syscall (freebsd-riscv64), const IFT_BSC ideal-int #53466
pkg syscall (freebsd-riscv64), const IFT_CARP = 248 #53466
pkg syscall (freebsd-riscv64), const IFT_CARP ideal-int #53466
pkg syscall (freebsd-riscv64), const IFT_CCTEMUL = 61 #53466
pkg syscall (freebsd-riscv64), const IFT_CCTEMUL ideal-int #53466

				b = append(b, replacement...)
			}
			continue
		}
		invalid = false
		b = append(b, s[i:i+wid]...)
		i += wid
	}
	return b
}

// isSeparator reports whether the rune could mark a word boundary.
// TODO: update when package unicode captures more of the properties.
func isSeparator(r rune) bool {
	// ASCII alphanumerics and underscore are not separators
	if r <= 0x7F {
		switch {

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

</p>
<p>
Implementation restriction: For compatibility with other tools, a
compiler may ignore a UTF-8-encoded byte order mark
(U+FEFF) if it is the first Unicode code point in the source text.
A byte order mark may be disallowed anywhere else in the source.
</p>

<h3 id="Characters">Characters</h3>

<p>