'\x07'
'\xff'
'\u12e4'
'\U00101234'
'\''         // rune literal containing single quote character
'aa'         // illegal: too many characters
'\xa'        // illegal: too few hexadecimal digits
'\0'         // illegal: too few octal digits
'\uDFFF'     // illegal: surrogate half
'\U00110000' // illegal: invalid Unicode code point
</pre>


<h3 id="String_literals">String literals</h3>

<p>

	{"(1*4)(DI)", "4(DI)"},
	{"(4*4)(BP)", "16(BP)"},
	{"(AX)", "(AX)"},
	{"(BP)(CX*4)", "(BP)(CX*4)"},
	{"(BP*8)", "0(BP*8)"},
	{"(BX)", "(BX)"},
	{"(SP)", "(SP)"},
	{"*AX", "AX"}, // TODO: Should make * illegal here; a simple alias for JMP AX.
	{"*runtime·_GetStdHandle(SB)", "*runtime._GetStdHandle(SB)"},
	{"-(4+12)(DI)", "-16(DI)"},
	{"-1(DI)(BX*1)", "-1(DI)(BX*1)"},
	{"-96(DI)(BX*1)", "-96(DI)(BX*1)"},
	{"0(AX)", "(AX)"},

	// Broadcast without memory operand.
	VADDPD.BCST X3, X2, K1, X1       // ERROR "illegal broadcast without memory argument"
	VADDPD.BCST X3, X2, K1, X1       // ERROR "illegal broadcast without memory argument"
	VADDPD.BCST X3, X2, K1, X1       // ERROR "illegal broadcast without memory argument"
	// CLWB instructions:
	CLWB BX                          // ERROR "invalid instruction"

			if prefix != 0 || scale != 0 {
				p.errorf("illegal address mode for register pair")
				return
			}
			a.Type = obj.TYPE_REGREG
			a.Offset = int64(r2)
			// Nothing may follow
			return
		}
		if p.arch.Family == sys.PPC64 {
			// Special form for PPC64: (R1+R2); alias for (R1)(R2).
			if prefix != 0 || scale != 0 {
				p.errorf("illegal address mode for register+register")
				return
			}

'\''         // rune literal containing single quote character
'aa'         // illegal: too many characters
'\k'         // illegal: k is not recognized after a backslash
'\xa'        // illegal: too few hexadecimal digits
'\0'         // illegal: too few octal digits
'\400'       // illegal: octal value over 255
'\uDFFF'     // illegal: surrogate half
'\U00110000' // illegal: invalid Unicode code point
</pre>

pkg go/token, const GO = 72
pkg go/token, const GOTO = 73
pkg go/token, const GTR = 41
pkg go/token, const HighestPrec = 7
pkg go/token, const IDENT = 4
pkg go/token, const IF = 74
pkg go/token, const ILLEGAL = 0
pkg go/token, const IMAG = 7
pkg go/token, const IMPORT = 75
pkg go/token, const INC = 37
pkg go/token, const INT = 5
pkg go/token, const INTERFACE = 76
pkg go/token, const LAND = 34

	MOVM.IB	[R0-R4], (F1)      // ERROR "illegal base register"
	MOVM.DB	[R0-R4], (F1)      // ERROR "illegal base register"
	MOVW	R0<<0(F1), R1      // ERROR "illegal base register"
	MOVB	R0<<0(F1), R1      // ERROR "illegal base register"
	MOVW	R1, R0<<0(F1)      // ERROR "illegal base register"
	MOVB	R2, R0<<0(F1)      // ERROR "illegal base register"
	MOVF	0x00ffffff(F2), F1 // ERROR "illegal base register"

	LDADDALD	R5, (R6), RSP                            // ERROR "illegal combination"
	LDADDALW	R5, (R6), RSP                            // ERROR "illegal combination"
	LDADDALH	R5, (R6), RSP                            // ERROR "illegal combination"
	LDADDALB	R5, (R6), RSP                            // ERROR "illegal combination"
	LDADDD	R5, (R6), RSP                                    // ERROR "illegal combination"

	MOVHU	X5, (X6)			// ERROR "unsupported unsigned store"
	MOVWU	X5, (X6)			// ERROR "unsupported unsigned store"
	MOVF	F0, F1, F2			// ERROR "illegal MOV instruction"
	MOVD	F0, F1, F2			// ERROR "illegal MOV instruction"
	MOV	X10, X11, X12			// ERROR "illegal MOV instruction"
	MOVW	X10, X11, X12			// ERROR "illegal MOV instruction"
	RORI	$64, X5, X6			// ERROR "immediate out of range 0 to 63"
	SLLI	$64, X5, X6			// ERROR "immediate out of range 0 to 63"

	{"3>>-4", "negative right shift count"},
	{"3>>(1<<63)", "negative right shift count"},
	{"(1<<63)>>2", "right shift of value with high bit set"},
	{"(1<<62)>>2", ""},
	{`'\x80'`, "illegal UTF-8 encoding for character constant"},
	{"(23*4", "missing closing paren"},
	{")23*4", "unexpected ) evaluating expression"},
	{"18446744073709551616", "value out of range"},
}

func TestBadExpr(t *testing.T) {