if !w.Stopped() {
		return -1
	}
	return Signal(w>>8) & 0xFF
}

func (w WaitStatus) Exited() bool { return w&0xFF == 0 }
func (w WaitStatus) ExitStatus() int {
	if !w.Exited() {
		return -1
	}
	return int((w >> 8) & 0xFF)
}

func (w WaitStatus) Signaled() bool { return w&0x40 == 0 && w&0xFF != 0 }
func (w WaitStatus) Signal() Signal {
	if !w.Signaled() {
		return -1
	}

        for (int i = 0; i < sz; i++) {
            char ch = str.charAt(i);

            // handle unicode
            if (ch > 0xfff) {
                out.write("\\u" + hex(ch));
            } else if (ch > 0xff) {
                out.write("\\u0" + hex(ch));
            } else if (ch > 0x7f) {
                out.write("\\u00" + hex(ch));
            } else if (ch < 32) {
                switch (ch) {

	SOCK_CLOEXEC                     = 0x80000
	SOCK_DGRAM                       = 0x1
	SOCK_NONBLOCK                    = 0x80
	SOCK_STREAM                      = 0x2
	SOL_SOCKET                       = 0xffff
	SO_ACCEPTCONN                    = 0x1009
	SO_ATTACH_BPF                    = 0x32
	SO_ATTACH_REUSEPORT_CBPF         = 0x33
	SO_ATTACH_REUSEPORT_EBPF         = 0x34
	SO_BINDTODEVICE                  = 0x19

		start := f.fset.Position(block.startByte)
		end := f.fset.Position(block.endByte)

		start, end = dedup(start, end)

		fmt.Fprintf(w, "\t\t%d, %d, %#x, // [%d]\n", start.Line, end.Line, (end.Column&0xFFFF)<<16|(start.Column&0xFFFF), i)
	}

	// Close the position array.
	fmt.Fprintf(w, "\t},\n")

	// Initialize the position array field.
	fmt.Fprintf(w, "\tNumStmt: [%d]uint16{\n", len(f.blocks))

	SOCK_CLOEXEC                     = 0x80000
	SOCK_DGRAM                       = 0x1
	SOCK_NONBLOCK                    = 0x80
	SOCK_STREAM                      = 0x2
	SOL_SOCKET                       = 0xffff
	SO_ACCEPTCONN                    = 0x1009
	SO_ATTACH_BPF                    = 0x32
	SO_ATTACH_REUSEPORT_CBPF         = 0x33
	SO_ATTACH_REUSEPORT_EBPF         = 0x34
	SO_BINDTODEVICE                  = 0x19

	case '\t':
		buf = append(buf, `\t`...)
	case '\v':
		buf = append(buf, `\v`...)
	default:
		switch {
		case r < ' ' || r == 0x7f:
			buf = append(buf, `\x`...)
			buf = append(buf, lowerhex[byte(r)>>4])
			buf = append(buf, lowerhex[byte(r)&0xF])
		case !utf8.ValidRune(r):
			r = 0xFFFD
			fallthrough
		case r < 0x10000:
			buf = append(buf, `\u`...)
			for s := 12; s >= 0; s -= 4 {

	}
}

//go:nosplit
func (l *debugLogWriter) writeFrameAt(pos, size uint64) bool {
	l.data.b[pos%uint64(len(l.data.b))] = uint8(size)
	l.data.b[(pos+1)%uint64(len(l.data.b))] = uint8(size >> 8)
	return size <= 0xFFFF
}

//go:nosplit
func (l *debugLogWriter) writeSync(tick, nano uint64) {
	l.tick, l.nano = tick, nano
	l.ensure(debugLogHeaderSize)
	l.writeFrameAt(l.write, 0)
	l.write += debugLogHeaderSize

	SOCK_CLOEXEC                     = 0x400000
	SOCK_DGRAM                       = 0x2
	SOCK_NONBLOCK                    = 0x4000
	SOCK_STREAM                      = 0x1
	SOL_SOCKET                       = 0xffff
	SO_ACCEPTCONN                    = 0x8000
	SO_ATTACH_BPF                    = 0x34
	SO_ATTACH_REUSEPORT_CBPF         = 0x35
	SO_ATTACH_REUSEPORT_EBPF         = 0x36
	SO_BINDTODEVICE                  = 0xd

		}
	}
}

func TestIsInCharacterRange(t *testing.T) {
	invalid := []rune{
		utf8.MaxRune + 1,
		0xD800, // surrogate min
		0xDFFF, // surrogate max
		-1,
	}
	for _, r := range invalid {
		if isInCharacterRange(r) {
			t.Errorf("rune %U considered valid", r)
		}
	}
}

var procInstTests = []struct {
	input  string

(AtomicAdd(64|32) ...) => (LoweredAtomicAdd(64|32) ...)

// AtomicAnd8(ptr,val) => LoweredAtomicAnd32(ptr&^3, ^((uint8(val) ^ 0xff) << ((ptr & 3) * 8)))
(AtomicAnd8 ptr val mem) =>
	(LoweredAtomicAnd32 (ANDI <typ.Uintptr> [^3] ptr)
		(NOT <typ.UInt32> (SLL <typ.UInt32> (XORI <typ.UInt32> [0xff] (ZeroExt8to32 val))
			(SLLI <typ.UInt64> [3] (ANDI <typ.UInt64> [3] ptr)))) mem)

(AtomicAnd32 ...) => (LoweredAtomicAnd32 ...)