r1 := NewRecord(time.Time{}, 0, "", 0)
	r1.AddAttrs(intAttrs(0, nAttrsInline+1)...)
	// Ensure that r1.back's capacity exceeds its length.
	b := make([]Attr, len(r1.back), len(r1.back)+1)
	copy(b, r1.back)
	r1.back = b
	// Make a copy that shares state.
	r2 := r1
	// Adding to both should insert a special Attr in the second.
	r1AttrsBefore := attrsSlice(r1)
	r1.AddAttrs(Int("p", 0))
	r2.AddAttrs(Int("p", 1))

	testenv.SkipIfOptimizationOff(t)
	r := NewRecord(time.Now(), LevelInfo, "msg", 0)
	for i := 0; i < 10; i++ {
		r.AddAttrs(Int("x = y", i))
	}
	var h Handler = NewTextHandler(io.Discard, nil)
	wantAllocs(t, 0, func() { h.Handle(context.Background(), r) })

	h = h.WithGroup("s")
	r.AddAttrs(Group("g", Int("a", 1)))
	wantAllocs(t, 0, func() { h.Handle(context.Background(), r) })
}

	for i := 0; i < r.nFront; i++ {
		if !f(r.front[i]) {
			return
		}
	}
	for _, a := range r.back {
		if !f(a) {
			return
		}
	}
}

// AddAttrs appends the given Attrs to the [Record]'s list of Attrs.
// It omits empty groups.
func (r *Record) AddAttrs(attrs ...Attr) {
	var i int
	for i = 0; i < len(attrs) && r.nFront < len(r.front); i++ {
		a := attrs[i]
		if a.Value.isEmptyGroup() {
			continue
		}

import (
	"bytes"
	"context"
	"log/slog"
	"slices"
	"testing"
)

func TestHandlers(t *testing.T) {
	ctx := context.Background()
	r := slog.NewRecord(testTime, slog.LevelInfo, testMessage, 0)
	r.AddAttrs(testAttrs...)
	t.Run("text", func(t *testing.T) {
		var b bytes.Buffer
		h := newFastTextHandler(&b)
		if err := h.Handle(ctx, r); err != nil {
			t.Fatal(err)
		}
		got := b.String()
		if got != wantText {

			var wg sync.WaitGroup
			for i := 0; i < count; i++ {
				sub1Record := NewRecord(time.Time{}, LevelInfo, "hello from sub1", 0)
				sub1Record.AddAttrs(Int("i", i))
				sub2Record := NewRecord(time.Time{}, LevelInfo, "hello from sub2", 0)
				sub2Record.AddAttrs(Int("i", i))
				wg.Add(1)
				go func() {
					defer wg.Done()
					if err := sub1.Handle(ctx, sub1Record); err != nil {
						t.Error(err)
					}

  // Set stack trace to be used for potential async error reporting.
  virtual void SetStackTrace(ManagedStackTrace stack_trace) = 0;

  virtual const tensorflow::AbstractOpAttrs* GetOpAttrs() const = 0;
  virtual void AddAttrs(const AbstractOpAttrs* op_attrs) = 0;

  virtual void SetCancellationManager(
      CancellationManager* cancellation_manager) = 0;

  // Returns the stack trace set by `SetStackTrace` if exists.

      int& func_count, const TF::SideEffectAnalysis::Info& side_effect_info);
};

// After raising ops and adding the Func & Call op, call this function
// to set attributes specific to this pass.
void AddAttrs(OpsAdded& ops_added, OpBuilder& builder, int func_count) {
  func::FuncOp& added_func_op = ops_added.func_op;
  func::CallOp& added_call_op = ops_added.call_op;
  StringAttr interface_name =

		},
	} {
		t.Run(test.name, func(t *testing.T) {
			var buf bytes.Buffer
			h := NewJSONHandler(&buf, &test.opts)
			r := NewRecord(testTime, LevelInfo, "m", 0)
			r.AddAttrs(Int("a", 1), Any("m", map[string]int{"b": 2}))
			if err := h.Handle(context.Background(), r); err != nil {
				t.Fatal(err)
			}
			got := strings.TrimSuffix(buf.String(), "\n")
			if got != test.want {

	if !internal.IgnorePC {
		var pcs [1]uintptr
		// skip [runtime.Callers, this function, this function's caller]
		runtime.Callers(3, pcs[:])
		pc = pcs[0]
	}
	r := NewRecord(time.Now(), level, msg, pc)
	r.AddAttrs(attrs...)
	if ctx == nil {
		ctx = context.Background()
	}
	_ = l.Handler().Handle(ctx, r)
}

// Debug calls [Logger.Debug] on the default logger.
func Debug(msg string, args ...any) {

and hidden fields that refer to state (such as attributes) indirectly. This
means that modifying a simple copy of a Record (e.g. by calling
[Record.Add] or [Record.AddAttrs] to add attributes)
may have unexpected effects on the original.
Before modifying a Record, use [Record.Clone] to
create a copy that shares no state with the original,
or create a new Record with [NewRecord]