s.reportZombies()
			}
		}
	}

	// Count the number of free objects in this span.
	nalloc := uint16(s.countAlloc())
	nfreed := s.allocCount - nalloc
	if nalloc > s.allocCount {
		// The zombie check above should have caught this in
		// more detail.
		print("runtime: nelems=", s.nelems, " nalloc=", nalloc, " previous allocCount=", s.allocCount, " nfreed=", nfreed, "\n")
		throw("sweep increased allocation count")
	}

			minSizeForMallocHeaderIsSizeClass = true
			break
		}
	}
	if !minSizeForMallocHeaderIsSizeClass {
		throw("min size of malloc header is not a size class boundary")
	}
	// Check that the pointer bitmap for all small sizes without a malloc header
	// fits in a word.
	if minSizeForMallocHeader/goarch.PtrSize > 8*goarch.PtrSize {
		throw("max pointer/scan bitmap size for headerless objects is too large")

var emptymspan mspan

func allocmcache() *mcache {
	var c *mcache
	systemstack(func() {
		lock(&mheap_.lock)
		c = (*mcache)(mheap_.cachealloc.alloc())
		c.flushGen.Store(mheap_.sweepgen)
		unlock(&mheap_.lock)
	})
	for i := range c.alloc {
		c.alloc[i] = &emptymspan
	}
	c.nextSample = nextSample()
	return c
}

// freemcache releases resources associated with this

		// Size is the maximum byte size of an object in this
		// size class.
		Size uint32

		// Mallocs is the cumulative count of heap objects
		// allocated in this size class. The cumulative bytes
		// of allocation is Size*Mallocs. The number of live
		// objects in this size class is Mallocs - Frees.
		Mallocs uint64

		// Frees is the cumulative count of heap objects freed
		// in this size class.
		Frees uint64

	return (*pageBits)(b).block64(i)
}

// allocPages64 allocates a 64-bit block of 64 pages aligned to 64 pages according
// to the bits set in alloc. The block set is the one containing the i'th page.
func (b *pallocBits) allocPages64(i uint, alloc uint64) {
	(*pageBits)(b).setBlock64(i, alloc)
}

// findBitRange64 returns the bit index of the first set of
// n consecutive 1 bits. If no consecutive set of 1 bits of

		t.Error("allocs-by-size and frees-by-size counts don't match in length")
	} else {
		for i := range objects.alloc.Buckets {
			ba := objects.alloc.Buckets[i]
			bf := objects.free.Buckets[i]
			if ba != bf {
				t.Errorf("bucket %d is different for alloc and free hists: %f != %f", i, ba, bf)
			}
		}
		if !t.Failed() {
			var gotAlloc, gotFree uint64
			want := objects.total
			for i := range objects.alloc.Counts {

		}
	})
}

func TestBuilderGrowSizeclasses(t *testing.T) {
	s := Repeat("a", 19)
	allocs := testing.AllocsPerRun(100, func() {
		var b Builder
		b.Grow(18)
		b.WriteString(s)
		_ = b.String()
	})
	if allocs > 1 {
		t.Fatalf("unexpected amount of allocations: %v, want: 1", allocs)
	}

		}
	}
}

type opAlloc struct {
	buf [128]byte
}

type opCall struct {
}

var sink []byte

func storeAlloc() {
	sink = make([]byte, 16)
}

func nonRecursiveGenericAllocFunction[CurrentOp any, OtherOp any](alloc bool) {
	if alloc {
		storeAlloc()
	} else {
		nonRecursiveGenericAllocFunction[OtherOp, CurrentOp](true)

		tm = TimeValue(testTime).Time()
		x = AnyValue(p).Any()
	}))
	if a != 0 {
		t.Errorf("got %d allocs, want zero", a)
	}
	_ = u
	_ = f
	_ = b
	_ = s
	_ = x
	_ = tm
}

func TestAnyLevelAlloc(t *testing.T) {
	// Because typical Levels are small integers,
	// they are zero-alloc.
	var a Value
	x := LevelDebug + 100
	wantAllocs(t, 0, func() { a = AnyValue(x) })
	_ = a
}

// space into chunks.
type chunkIdx uint

// chunkIndex returns the global index of the palloc chunk containing the
// pointer p.
func chunkIndex(p uintptr) chunkIdx {
	return chunkIdx((p - arenaBaseOffset) / pallocChunkBytes)
}

// chunkBase returns the base address of the palloc chunk at index ci.
func chunkBase(ci chunkIdx) uintptr {
	return uintptr(ci)*pallocChunkBytes + arenaBaseOffset
}