if !strings.Contains(err.Error(), tc.errStrFrag) {
				t.Errorf("case[%s]: Error string %q does not contain %q", tc.tcase, err, tc.errStrFrag)
			}
		} else if tc.errStrFrag != "" {
			t.Errorf("case[%s]: Error %q expected, but not seen", tc.tcase, tc.errStrFrag)
		} else {
			if tc.count != len(routes) {
				t.Errorf("case[%s]: expected %d routes, have %v", tc.tcase, tc.count, routes)
			} else if tc.count == 1 {

	// Now generate all the case bodies
	for i, ncase := range sw.Cases {
		sw.Compiled.Append(ir.NewLabelStmt(ncase.Pos(), labels[i]))
		if caseVar := ncase.Var; caseVar != nil {
			val := s.srcName
			if len(ncase.List) == 1 {
				// single type. We have to downcast the input value to the target type.
				if ncase.List[0].Op() == ir.OTYPE { // single compile-time known type

				// is odd so we take the low bit from _case.
				return rune(cr.Lo) + ((r-rune(cr.Lo))&^1 | rune(_case&1)), true
			}
			return r + delta, true
		}
		if r < rune(cr.Lo) {
			hi = m
		} else {
			lo = m + 1
		}
	}
	return r, false
}

// To maps the rune to the specified case: [UpperCase], [LowerCase], or [TitleCase].
func To(_case int, r rune) rune {
	r, _ = to(_case, r, CaseRanges)

	return typecheck.ConvNop(s, t)
}

var scase *types.Type

// Keep in sync with src/runtime/select.go.
func scasetype() *types.Type {
	if scase == nil {
		n := ir.NewDeclNameAt(src.NoXPos, ir.OTYPE, ir.Pkgs.Runtime.Lookup("scase"))
		scase = types.NewNamed(n)
		n.SetType(scase)
		n.SetTypecheck(1)

		scase.SetUnderlying(types.NewStruct([]*types.Field{

		ir.OLABEL,
		ir.OJUMPTABLE,
		ir.OINTERFACESWITCH,
		ir.ODCL,
		ir.OCHECKNIL:
		return n

	case ir.OBLOCK:
		n := n.(*ir.BlockStmt)
		walkStmtList(n.List)
		return n

	case ir.OCASE:
		base.Errorf("case statement out of place")
		panic("unreachable")

	case ir.ODEFER:
		n := n.(*ir.GoDeferStmt)
		ir.CurFunc.SetHasDefer(true)
		ir.CurFunc.NumDefers++

		}
		if n.Tag != nil {
			fmt.Fprintf(s, " %v ", n.Tag)
		}
		fmt.Fprintf(s, " { %v }", n.Cases)

	case OCASE:
		n := n.(*CaseClause)
		if len(n.List) != 0 {
			fmt.Fprintf(s, "case %.v", n.List)
		} else {
			fmt.Fprint(s, "default")
		}
		fmt.Fprintf(s, ": %v", n.Body)

	case OBREAK, OCONTINUE, OGOTO, OFALL:
		n := n.(*BranchStmt)
		if n.Label != nil {
			fmt.Fprintf(s, "%v %v", n.Op(), n.Label)

		return
	}

	// determine token string
	var tok string
	switch p.tok {
	case _Name:
		tok = "name " + p.lit
	case _Semi:
		tok = p.lit
	case _Literal:
		tok = "literal " + p.lit
	case _Operator:
		tok = p.op.String()
	case _AssignOp:
		tok = p.op.String() + "="
	case _IncOp:
		tok = p.op.String()
		tok += tok
	default:
		tok = tokstring(p.tok)
	}

	if b {
		select { // ERROR "live at call to selectgo:( .autotmp_[0-9]+)+$" "stack object .autotmp_[0-9]+ \[4\]runtime.scase$"
		case <-fc38():
			printnl()
		case fc38() <- *fi38(1): // ERROR "live at call to fc38:( .autotmp_[0-9]+)+$" "live at call to fi38:( .autotmp_[0-9]+)+$" "stack object .autotmp_[0-9]+ string$"
			printnl()

	for k, v := range fun.values {
		if v.Op == OpInvalid {
			switch k {
			case "r1":
				fallthrough
			case "r2":
				fallthrough
			case "r3":
				if s1Cnt == 0 {
					t.Errorf("cse removed all of r1,r2,r3")
				}
				s1Cnt--

			case "r4":
				fallthrough
			case "r5":
				if s2Cnt == 0 {
					t.Errorf("cse removed all of r4,r5")
				}
				s2Cnt--
			default:

	if b {
		select { // ERROR "live at call to selectgo:( .autotmp_[0-9]+)+$" "stack object .autotmp_[0-9]+ \[4\]runtime.scase$"
		case <-fc38():
			printnl()
		case fc38() <- *fi38(1): // ERROR "live at call to fc38:( .autotmp_[0-9]+)+$" "live at call to fi38:( .autotmp_[0-9]+)+$" "stack object .autotmp_[0-9]+ string$"
			printnl()