if pi, ok := ptrMap.Load(t); ok {
		return &pi.(*ptrType).Type
	}

	// Look in known types.
	s := "*" + t.String()
	for _, tt := range typesByString(s) {
		p := (*ptrType)(unsafe.Pointer(tt))
		if p.Elem != &t.t {
			continue
		}
		pi, _ := ptrMap.LoadOrStore(t, p)
		return &pi.(*ptrType).Type
	}

	// Create a new ptrType starting with the description
	// of an *unsafe.Pointer.

			}
			if !strings.HasPrefix(name, "__cgo__") {
				break
			}
			typ, err := d.Type(typOff)
			if err != nil {
				fatalf("loading DWARF type: %s", err)
			}
			t, ok := typ.(*dwarf.PtrType)
			if !ok || t == nil {
				fatalf("internal error: %s has non-pointer type", name)
			}
			i, err := strconv.Atoi(name[7:])
			if err != nil {
				fatalf("malformed __cgo__ name: %s", name)
			}

	t := e._type

	var et *_type
	if t.Kind_&abi.KindMask != abi.Pointer {
		throw("bad argument to getgcmask: expected type to be a pointer to the value type whose mask is being queried")
	}
	et = (*ptrtype)(unsafe.Pointer(t)).Elem

	// data or bss
	for _, datap := range activeModules() {
		// data
		if datap.data <= uintptr(p) && uintptr(p) < datap.edata {
			bitmap := datap.gcdatamask.bytedata

	nret    uintptr
	fint    *_type   // May be a heap pointer, but always live.
	ot      *ptrtype // May be a heap pointer, but always live.
}

// Adds a finalizer to the object p. Returns true if it succeeded.
func addfinalizer(p unsafe.Pointer, f *funcval, nret uintptr, fint *_type, ot *ptrtype) bool {
	lock(&mheap_.speciallock)
	s := (*specialfinalizer)(mheap_.specialfinalizeralloc.alloc())

//		      SliceType | MapType | Channel_Type .
func (p *parser) typeOrNil() Expr {
	if trace {
		defer p.trace("typeOrNil")()
	}

	pos := p.pos()
	switch p.tok {
	case _Star:
		// ptrtype
		p.next()
		return newIndirect(pos, p.type_())

	case _Arrow:
		// recvchantype
		p.next()
		p.want(_Chan)
		t := new(ChanType)
		t.pos = pos
		t.Dir = RecvOnly

	for _, typ := range []string{
		"type:internal/abi.Type",
		"type:internal/abi.ArrayType",
		"type:internal/abi.ChanType",
		"type:internal/abi.FuncType",
		"type:internal/abi.MapType",
		"type:internal/abi.PtrType",
		"type:internal/abi.SliceType",
		"type:internal/abi.StructType",
		"type:internal/abi.InterfaceType",
		"type:internal/abi.ITab",
		"type:internal/abi.Imethod"} {
		d.defgotype(d.lookupOrDiag(typ))

			expectedSetCost:  22,
		},
		{
			name: "extended library lowerAscii",
			schemaGenerator: func(max *int64) *schema.Structural {
				strType := withMaxLength(primitiveType("string", ""), max)
				strType = withRule(strType, "self.lowerAscii() == 'lower!'")
				return &strType
			},
			expectedCalcCost: 314575,
			setMaxElements:   10,
			expectedSetCost:  6,
		},
		{