// (if they were not, the recursion would have stopped);
				// search the ifacePair stack for the same pair.
				//
				// This is a quadratic algorithm, but in practice these stacks
				// are extremely short (bounded by the nesting depth of interface
				// type declarations that recur via parameter types, an extremely
				// rare occurrence). An alternative implementation might use a

	// be read outside the lock, but is only written to with lock held.
	//
	// Both wait & notify can wrap around, and such cases will be correctly
	// handled as long as their "unwrapped" difference is bounded by 2^31.
	// For this not to be the case, we'd need to have 2^31+ goroutines
	// blocked on the same condvar, which is currently not possible.
	notify uint32

	// List of parked waiters.
	lock mutex

	// However, it is only processing functions (which
	// are processed in a delayed fashion) that may
	// add more actions (such as nested functions), so
	// this is a sufficiently bounded process.
	for i := top; i < len(check.delayed); i++ {
		a := &check.delayed[i]
		if check.conf._Trace {
			if a.desc != nil {
				check.trace(a.desc.pos.Pos(), "-- "+a.desc.format, a.desc.args...)
			} else {

	for _, c := range p.Cmds {
		n.append(c.Copy().(*CommandNode))
	}
	return n
}

func (p *PipeNode) Copy() Node {
	return p.CopyPipe()
}

// ActionNode holds an action (something bounded by delimiters).
// Control actions have their own nodes; ActionNode represents simple
// ones such as field evaluations and parenthesized pipelines.
type ActionNode struct {
	NodeType
	Pos
	tr   *Tree

	// However, it is only processing functions (which
	// are processed in a delayed fashion) that may
	// add more actions (such as nested functions), so
	// this is a sufficiently bounded process.
	for i := top; i < len(check.delayed); i++ {
		a := &check.delayed[i]
		if check.conf.Trace {
			if a.desc != nil {
				check.trace(a.desc.pos.Pos(), "-- "+a.desc.format, a.desc.args...)
			} else {

					panic("unexpected integer size")
				}
				v.AuxInt = 0
				break // Be sure not to fallthrough - this is no longer OpRsh.
			}
			// If the Rsh hasn't been replaced with 0, still check if it is bounded.
			fallthrough
		case OpLsh8x8, OpLsh8x16, OpLsh8x32, OpLsh8x64,
			OpLsh16x8, OpLsh16x16, OpLsh16x32, OpLsh16x64,
			OpLsh32x8, OpLsh32x16, OpLsh32x32, OpLsh32x64,
			OpLsh64x8, OpLsh64x16, OpLsh64x32, OpLsh64x64,

        // in.available() always returns 0 (the default).
        int skip = (int) Math.min(remaining, BUFFER_SIZE);
        if (buf == null) {
          // Allocate a buffer bounded by the maximum size that can be requested, for
          // example an array of BUFFER_SIZE is unnecessary when the value of remaining
          // is smaller.
          buf = new byte[skip];
        }

        // in.available() always returns 0 (the default).
        int skip = (int) Math.min(remaining, BUFFER_SIZE);
        if (buf == null) {
          // Allocate a buffer bounded by the maximum size that can be requested, for
          // example an array of BUFFER_SIZE is unnecessary when the value of remaining
          // is smaller.
          buf = new byte[skip];
        }

	// because there will be a policy mapping stored on drives whose
	// filename is this parentUser: therefore, it needs to have only valid
	// filename characters and needs to have bounded length.
	{
		h := sha256.New()
		h.Write([]byte("openid:" + subFromToken + ":" + issFromToken))
		bs := h.Sum(nil)
		cred.ParentUser = base64.RawURLEncoding.EncodeToString(bs)
	}

				newCases = append(newCases, &ir.CaseClause{
					List: []ir.Node{ir.NewInt(base.Pos, int64(i))},
					Body: []ir.Node{c.jmp},
				})
			}
			// TODO: add len(newCases) case, mark switch as bounded
			sw2 := ir.NewSwitchStmt(base.Pos, caseVar, newCases)
			sw.Compiled.Append(typecheck.Stmt(sw2))
			interfaceCases = interfaceCases[:0]
		}

		if anyGoto != nil {