return "{}";
      }
      LOG(WARNING) << "Unimplemented: default value of list-typed attribute.";
      return "/* UNIMPLEMENTED */";
    case AttrValue::kShape:
    case AttrValue::kTensor:
    case AttrValue::kFunc:
    case AttrValue::kPlaceholder:
      LOG(ERROR) << "Unexpected non-primitive attribute value.";
      return "/* ERROR */";
  }
}

string AttrView::VariableStrLen() const {

	// the caller to a list of callees.
	extraCalls map[*ir.Func][]nowritebarrierrecCall

	// curfn is the current function during AST walks.
	curfn *ir.Func
}

type nowritebarrierrecCall struct {
	target *ir.Func // caller or callee
	lineno src.XPos // line of call
}

// newNowritebarrierrecChecker creates a nowritebarrierrecChecker. It
// must be called before walk.
func newNowritebarrierrecChecker() *nowritebarrierrecChecker {

//go:noinline
func Load8(ptr *uint8) uint8 {
	return *ptr
}

//go:noescape
func And8(ptr *uint8, val uint8)

//go:noescape
func Or8(ptr *uint8, val uint8)

//go:noescape
func And(ptr *uint32, val uint32)

//go:noescape
func Or(ptr *uint32, val uint32)

//go:noescape
func And32(ptr *uint32, val uint32) uint32

//go:noescape
func Or32(ptr *uint32, val uint32) uint32

//go:noescape

func badlinkname_rtype_AssignableTo(*rtype, Type) bool

//go:linkname badlinkname_rtype_Bits reflect.(*rtype).Bits
func badlinkname_rtype_Bits(*rtype) int

//go:linkname badlinkname_rtype_ChanDir reflect.(*rtype).ChanDir
func badlinkname_rtype_ChanDir(*rtype) ChanDir

//go:linkname badlinkname_rtype_Comparable reflect.(*rtype).Comparable
func badlinkname_rtype_Comparable(*rtype) bool

	exithook.Add(exithook.Hook{F: f1})
	exithook.Add(exithook.Hook{F: f2})
	// no explicit call to os.Exit
}

func testGoodExit() {
	f1 := func() { println("apple") }
	f2 := func() { println("orange") }
	exithook.Add(exithook.Hook{F: f1})
	exithook.Add(exithook.Hook{F: f2})
	// explicit call to os.Exit
	os.Exit(0)
}

func testBadExit() {
	f1 := func() { println("blog") }
	f2 := func() { println("blix") }

}

func (s *StructuralValidationRule) Rule() string {
	return s.rule
}
func (s *StructuralValidationRule) Message() string {
	return s.message
}
func (s *StructuralValidationRule) FieldPath() string {
	return s.fieldPath
}
func (s *StructuralValidationRule) MessageExpression() string {
	return s.messageExpression
}

func (s *Structural) XValidations() []common.ValidationRule {

//
//go:linkname runtimeNano runtime.nanotime
func runtimeNano() int64

func runtime_pollServerInit()
func runtime_pollOpen(fd uintptr) (uintptr, int)
func runtime_pollClose(ctx uintptr)
func runtime_pollWait(ctx uintptr, mode int) int
func runtime_pollWaitCanceled(ctx uintptr, mode int)
func runtime_pollReset(ctx uintptr, mode int) int
func runtime_pollSetDeadline(ctx uintptr, d int64, mode int)
func runtime_pollUnblock(ctx uintptr)

			return true
		}
	}
	return false
}

func exclude(exclude ...Cluster) func(Cluster) bool {
	return func(cc Cluster) bool {
		for _, e := range exclude {
			if cc.Name() == e.Name() {
				return true
			}
		}
		return false
	}
}

func (c Clusters) filterClusters(included func(Cluster) bool,
	excluded func(Cluster) bool,
) Clusters {
	var out Clusters
	for _, cc := range c {

package trace

import "testing"

func TestPanicEvent(t *testing.T) {
	// Use a sync event for this because it doesn't have any extra metadata.
	ev := syncEvent(nil, 0)

	mustPanic(t, func() {
		_ = ev.Range()
	})
	mustPanic(t, func() {
		_ = ev.Metric()
	})
	mustPanic(t, func() {
		_ = ev.Log()
	})
	mustPanic(t, func() {
		_ = ev.Task()
	})
	mustPanic(t, func() {
		_ = ev.Region()
	})

	pc=4544740 func=44 file=42 line=868
	pc=4538792 func=45 file=42 line=258
	pc=4814277 func=37 file=36 line=125
	pc=4815228 func=38 file=31 line=27
Stack id=22 nframes=3
	pc=4642148 func=46 file=47 line=81
	pc=4816326 func=48 file=47 line=87
	pc=4815941 func=34 file=31 line=50
Stack id=11 nframes=1
	pc=4815364 func=38 file=31 line=34
Stack id=5 nframes=4
	pc=4547349 func=49 file=50 line=42
	pc=4538780 func=45 file=42 line=257