return
		}

		if check.recordTypes() {
			check.recordBuiltinType(call.Fun, makeSig(Typ[Int], x.typ, y.typ))
		}
		x.mode = value
		x.typ = Typ[Int]

	case _Delete:
		// delete(map_, key)
		// map_ must be a map type or a type parameter describing map types.
		// The key cannot be a type parameter for now.
		map_ := x.typ
		var key Type
		if !underIs(map_, func(u Type) bool {

			x = x.intersect(y)
			if x.absent() {
				x = VarLoc{}
				break
			}
		}

		// Delete if necessary, but not otherwise (in order to maximize sharing).
		if x.absent() {
			if !x0.absent() {
				blockChanged = true
				newState.Delete(k)
			}
			slotLocs[k] = VarLoc{}
			continue
		}
		if x != x0 {
			blockChanged = true

	}))
	res, err := cst.c.Get(cst.ts.URL)
	if err != nil {
		t.Fatal(err)
	}
	if _, err := io.Copy(io.Discard, res.Body); err != nil {
		t.Fatal(err)
	}
	res.Body.Close()
	delete(res.Header, "Date")
	delete(res.Header, "Content-Type")

	if want := (Header{"Foo": {"Bar"}}); !reflect.DeepEqual(res.Header, want) {
		t.Errorf("Header = %#v; want %#v", res.Header, want)
	}

	//
	// Example:
	//  var _ = complex(float32(1), float64(2))
	InvalidComplex

	// InvalidDelete occurs when the delete built-in function is called with a
	// first argument that is not a map.
	//
	// Example:
	//  func f() {
	//  	m := "hello"
	//  	delete(m, "e")
	//  }
	InvalidDelete

	// InvalidImag occurs when the imag built-in function is called with an

	t := fsTester{fsys: fsys}
	t.checkDir(".")
	t.checkOpen(".")
	found := make(map[string]bool)
	for _, dir := range t.dirs {
		found[dir] = true
	}
	for _, file := range t.files {
		found[file] = true
	}
	delete(found, ".")
	if len(expected) == 0 && len(found) > 0 {
		var list []string
		for k := range found {
			if k != "." {
				list = append(list, k)
			}
		}
		slices.Sort(list)
		if len(list) > 15 {

	_Clear:   {"clear", 1, false, statement},
	_Close:   {"close", 1, false, statement},
	_Complex: {"complex", 2, false, expression},
	_Copy:    {"copy", 2, false, statement},
	_Delete:  {"delete", 2, false, statement},
	_Imag:    {"imag", 1, false, expression},
	_Len:     {"len", 1, false, expression},
	_Make:    {"make", 1, true, expression},
	// To disable max/min, remove the next two lines.

	_Clear:   {"clear", 1, false, statement},
	_Close:   {"close", 1, false, statement},
	_Complex: {"complex", 2, false, expression},
	_Copy:    {"copy", 2, false, statement},
	_Delete:  {"delete", 2, false, statement},
	_Imag:    {"imag", 1, false, expression},
	_Len:     {"len", 1, false, expression},
	_Make:    {"make", 1, true, expression},
	// To disable max/min, remove the next two lines.

			if err := checkRunning(p, g, ev, false); err != nil {
				return err
			}
			g.evStart = nil
			g.state = gDead
			p.g = 0

			if ev.Type == EvGoEnd { // flush all active regions
				delete(activeRegions, ev.G)
			}

			gs[ev.G] = g
			ps[ev.P] = p
		case EvGoSched, EvGoPreempt:
			g := gs[ev.G]
			p := ps[ev.P]
			if err := checkRunning(p, g, ev, false); err != nil {

#define __err2ad 0x16C*16

// Call Instructions
#define LE_CALL    BYTE $0x0D; BYTE $0x76 // BL R7, R6
#define SVC_LOAD   BYTE $0x0A; BYTE $0x08 // SVC 08 LOAD
#define SVC_DELETE BYTE $0x0A; BYTE $0x09 // SVC 09 DELETE

DATA zosLibVec<>(SB)/8, $0
GLOBL zosLibVec<>(SB), NOPTR, $8

TEXT ·initZosLibVec(SB), NOSPLIT|NOFRAME, $0-0
	MOVW PSALAA, R8
	MOVD LCA64(R8), R8
	MOVD CAA(R8), R8
	MOVD EDCHPXV(R8), R8

	}

	// The loopclosure analyzer (aka "rangeloop" before CL 140578)
	// is a no-op for files whose version >= go1.22, so we use a
	// go.mod file in the rangeloop directory to "downgrade".
	//
	// TOOD(adonovan): delete when go1.21 goes away.
	t.Run("loopclosure", func(t *testing.T) {
		cmd := testenv.Command(t, testenv.GoToolPath(t), "vet", "-vettool="+vetPath(t), ".")
		cmd.Env = append(os.Environ(), "GOWORK=off")