s.IsIdentRune = isIdentRune
	return &Tokenizer{
		s:    &s,
		base: src.NewFileBase(name, objabi.AbsFile(objabi.WorkingDir(), name, *flags.TrimPath)),
		line: 1,
		file: file,
	}
}

// We want center dot (·) and division slash (∕) to work as identifier characters.
func isIdentRune(ch rune, i int) bool {
	if unicode.IsLetter(ch) {
		return true
	}
	switch ch {
	case '_': // Underscore; traditional.
		return true

America/Mexico_City America/Miquelon America/Moncton America/Monterrey America/Montevideo America/Montreal America/Montserrat America/Nassau America/New_York America/Nipigon America/Nome America/Noronha America/North_Dakota/Beulah America/North_Dakota/Center America/North_Dakota/New_Salem America/Nuuk America/Ojinaga America/Panama America/Pangnirtung America/Paramaribo America/Phoenix America/Port-au-Prince America/Port_of_Spain America/Porto_Acre America/Porto_Velho America/Puerto_Rico America/Punta_Arenas...

pkg syscall (freebsd-riscv64), const SYS_BINDAT = 538 #53466
pkg syscall (freebsd-riscv64), const SYS_BINDAT ideal-int #53466
pkg syscall (freebsd-riscv64), const SYS_CAP_ENTER = 516 #53466
pkg syscall (freebsd-riscv64), const SYS_CAP_ENTER ideal-int #53466
pkg syscall (freebsd-riscv64), const SYS_CAP_FCNTLS_GET = 537 #53466
pkg syscall (freebsd-riscv64), const SYS_CAP_FCNTLS_GET ideal-int #53466

	{"$0xfffffffffffff001", "$-4095"},
	{"$1", "$1"},
	{"$1.0", "$(1.0)"},
	{"$10", "$10"},
	{"$1000", "$1000"},
	{"$1000000", "$1000000"},
	{"$1000000000", "$1000000000"},
	{"$__tsan_func_enter(SB)", "$__tsan_func_enter(SB)"},
	{"$main(SB)", "$main(SB)"},
	{"$masks<>(SB)", "$masks<>(SB)"},
	{"$setg_gcc<>(SB)", "$setg_gcc<>(SB)"},
	{"$shifts<>(SB)", "$shifts<>(SB)"},
	{"$~(1<<63)", "$9223372036854775807"},

declarations and definitions. These may then be referred to from Go
code as though they were defined in the package "C". All names
declared in the preamble may be used, even if they start with a
lower-case letter. Exception: static variables in the preamble may
not be referenced from Go code; static functions are permitted.

See $GOROOT/cmd/cgo/internal/teststdio and $GOROOT/misc/cgo/gmp for examples. See

// non-pointers in this type.
// TODO: Currently our best solution is to find these manually and list them as
// they come up. A better solution is desired.
// Note: DEPRECATED. There is now a better solution. Search for incomplete in this file.
func (c *typeConv) badPointerTypedef(dt *dwarf.TypedefType) bool {
	if c.badCFType(dt) {
		return true
	}
	if c.badJNI(dt) {

	AND	$1, ZR                              // fb0340b2ff031b8a
	ANDW	$1, ZR                              // fb030032ff031b0a
	// TODO: this could have better encoding
	ANDW	$-1, R10                            // 1b0080124a011b0a
	AND	$8, R0, RSP                         // 1f007d92
	ORR	$8, R0, RSP                         // 1f007db2

pkg syscall (freebsd-arm64), const SYS_BINDAT = 538
pkg syscall (freebsd-arm64), const SYS_BINDAT ideal-int
pkg syscall (freebsd-arm64), const SYS_CAP_ENTER = 516
pkg syscall (freebsd-arm64), const SYS_CAP_ENTER ideal-int
pkg syscall (freebsd-arm64), const SYS_CAP_FCNTLS_GET = 537
pkg syscall (freebsd-arm64), const SYS_CAP_FCNTLS_GET ideal-int
pkg syscall (freebsd-arm64), const SYS_CAP_FCNTLS_LIMIT = 536

pkg syscall (freebsd-386), const SYS_AUDITCTL ideal-int
pkg syscall (freebsd-386), const SYS_AUDITON ideal-int
pkg syscall (freebsd-386), const SYS_BIND ideal-int
pkg syscall (freebsd-386), const SYS_CAP_ENTER ideal-int
pkg syscall (freebsd-386), const SYS_CAP_GETMODE ideal-int
pkg syscall (freebsd-386), const SYS_CAP_GETRIGHTS ideal-int
pkg syscall (freebsd-386), const SYS_CAP_NEW ideal-int

		}
		if s[i+1] == c1 && Equal(s[i:i+n], sep) {
			return i
		}
		i++
		fails++
		if fails >= 4+i>>4 && i < t {
			// Give up on IndexByte, it isn't skipping ahead
			// far enough to be better than Rabin-Karp.
			// Experiments (using IndexPeriodic) suggest
			// the cutover is about 16 byte skips.
			// TODO: if large prefixes of sep are matching
			// we should cutover at even larger average skips,