t.String = types.Types[types.TSTRING]
	t.BytePtr = types.NewPtr(types.Types[types.TUINT8])
	t.Int32Ptr = types.NewPtr(types.Types[types.TINT32])
	t.UInt32Ptr = types.NewPtr(types.Types[types.TUINT32])
	t.IntPtr = types.NewPtr(types.Types[types.TINT])
	t.UintptrPtr = types.NewPtr(types.Types[types.TUINTPTR])
	t.Float32Ptr = types.NewPtr(types.Types[types.TFLOAT32])
	t.Float64Ptr = types.NewPtr(types.Types[types.TFLOAT64])

	{"asanregisterglobals", funcTag, 124},
}

func runtimeTypes() []*types.Type {
	var typs [156]*types.Type
	typs[0] = types.ByteType
	typs[1] = types.NewPtr(typs[0])
	typs[2] = types.Types[types.TANY]
	typs[3] = types.NewPtr(typs[2])
	typs[4] = newSig(params(typs[1]), params(typs[3]))
	typs[5] = types.Types[types.TUINTPTR]
	typs[6] = types.Types[types.TBOOL]
	typs[7] = types.Types[types.TUNSAFEPTR]

func itabType(itab ir.Node) ir.Node {
	if itabTypeField == nil {
		// internal/abi.ITab's Type field
		itabTypeField = runtimeField("Type", rttype.ITab.OffsetOf("Type"), types.NewPtr(types.Types[types.TUINT8]))
	}
	return boundedDotPtr(base.Pos, itab, itabTypeField)
}

var itabTypeField *types.Field

// boundedDotPtr returns a selector expression representing ptr.field

	if t == nil {
		n.SetType(nil)
		return n
	}
	if !t.IsSlice() && !t.IsString() {
		base.Fatalf("OSPTR of %v", t)
	}
	if t.IsString() {
		n.SetType(types.NewPtr(types.Types[types.TUINT8]))
	} else {
		n.SetType(types.NewPtr(t.Elem()))
	}
	return n
}

// tcSlice typechecks an OSLICE or OSLICE3 node.
func tcSlice(n *ir.SliceExpr) ir.Node {
	n.X = DefaultLit(Expr(n.X), nil)

		base.Fatalf("missing argument to new")
	}
	l := n.X
	l = typecheck(l, ctxType)
	t := l.Type()
	if t == nil {
		n.SetType(nil)
		return n
	}
	n.X = l
	n.SetType(types.NewPtr(t))
	return n
}

// tcPanic typechecks an OPANIC node.
func tcPanic(n *ir.UnaryExpr) ir.Node {
	n.X = Expr(n.X)
	n.X = AssignConv(n.X, types.Types[types.TINTER], "argument to panic")

		a = new(LocalSlot)
		*a = slot // don't escape slot
		f.CanonicalLocalSlots[slot] = a
	}
	return a
}

func (f *Func) SplitString(name *LocalSlot) (*LocalSlot, *LocalSlot) {
	ptrType := types.NewPtr(types.Types[types.TUINT8])
	lenType := types.Types[types.TINT]
	// Split this string up into two separate variables.
	p := f.SplitSlot(name, ".ptr", 0, ptrType)
	l := f.SplitSlot(name, ".len", ptrType.Size(), lenType)

//	newLen = new length (= oldLen + num)
//	oldCap = original slice's capacity.
//	   num = number of elements being added
//	    et = element type
//
// return values:
//
//	newPtr = pointer to the new backing store
//	newLen = same value as the argument
//	newCap = capacity of the new backing store
//
// Requires that uint(newLen) > uint(oldCap).

func PtrDataSize(t *Type) int64 {
	CalcSize(t)
	x := t.ptrBytes
	if t.Kind() == TPTR && t.Elem().NotInHeap() {
		// Note: this is done here instead of when we're setting
		// the ptrBytes field, because at that time (in NewPtr, usually)
		// the NotInHeap bit of the element type might not be set yet.
		x = 0
	}
	return x

	n.Rhs = []ir.Node{call}
	n.SetOp(ir.OAS2FUNC)

	// don't generate a = *var if a is _
	if ir.IsBlank(a) {
		return walkExpr(typecheck.Stmt(n), init)
	}

	var_ := typecheck.TempAt(base.Pos, ir.CurFunc, types.NewPtr(t.Elem()))
	var_.SetTypecheck(1)
	var_.MarkNonNil() // mapaccess always returns a non-nil pointer

	n.Lhs[0] = var_
	init.Append(walkExpr(n, init))

		mapFn = mapfn("mapaccess1_fat", t, true)
	default:
		mapFn = mapfn(mapaccess1[fast], t, false)
	}
	call := mkcall1(mapFn, nil, init, args...)
	call.SetType(types.NewPtr(t.Elem()))
	call.MarkNonNil() // mapaccess1* and mapassign always return non-nil pointers.
	star := ir.NewStarExpr(base.Pos, call)
	star.SetType(t.Elem())
	star.SetTypecheck(1)
	return star
}