// syscall.Filetype is a uint8 but we store it as a uint32 in SysFile in
	// order to use atomic load/store on the field, which is why we have to
	// perform this type conversion.
	fileType := syscall.Filetype(atomic.LoadUint32(&fd.Filetype))

	if fileType == syscall.FILETYPE_UNKNOWN {
		var stat syscall.Stat_t
		if err := fd.Fstat(&stat); err != nil {
			return 0, err
		}
		fileType = stat.Filetype

// SetTileHeight can be called at most once,
// and if so it must be called before the first call to Lookup.
func (c *Client) SetTileHeight(height int) {
	if atomic.LoadUint32(&c.didLookup) != 0 {
		panic("SetTileHeight used after Lookup")
	}
	if height <= 0 {
		panic("invalid call to SetTileHeight")
	}
	if c.tileHeight != 0 {
		panic("multiple calls to SetTileHeight")
	}

	m.Store(nil, struct{}{})

	var finalized uint32

	// Set finalizers that count for collected keys. A non-zero count
	// indicates that keys have not been leaked.
	for atomic.LoadUint32(&finalized) == 0 {
		p := new(int)
		runtime.SetFinalizer(p, func(*int) {
			atomic.AddUint32(&finalized, 1)
		})
		m.Store(p, struct{}{})
		m.Delete(p)
		runtime.GC()
	}
}

	// Keep GC running continuously during the benchmark, which in
	// turn keeps the write barrier on continuously.
	var stop uint32
	done := make(chan bool)
	go func() {
		for atomic.LoadUint32(&stop) == 0 {
			runtime.GC()
		}
		close(done)
	}()
	defer func() {
		atomic.StoreUint32(&stop, 1)
		<-done
	}()

	b.ResetTimer()
	f()
	b.StopTimer()
}

		{"CompareAndSwapUint64", Func, 0},
		{"CompareAndSwapUintptr", Func, 0},
		{"Int32", Type, 19},
		{"Int64", Type, 19},
		{"LoadInt32", Func, 0},
		{"LoadInt64", Func, 0},
		{"LoadPointer", Func, 0},
		{"LoadUint32", Func, 0},
		{"LoadUint64", Func, 0},
		{"LoadUintptr", Func, 0},
		{"Pointer", Type, 19},
		{"StoreInt32", Func, 0},
		{"StoreInt64", Func, 0},

		n.loader = nil
	}

	n.setState(complete)
	return n
}

// state atomically accesses the current state of the receiver.
func (n *Named) state() namedState {
	return namedState(atomic.LoadUint32(&n.state_))
}

// setState atomically stores the given state for n.
// Must only be called while holding n.mu.
func (n *Named) setState(state namedState) {
	atomic.StoreUint32(&n.state_, uint32(state))
}

			for i := 0; i < chanCap; i++ {
				c <- i
			}
			sent := uint32(0)
			go func() {
				c <- 0
				atomic.StoreUint32(&sent, 1)
			}()
			time.Sleep(time.Millisecond)
			if atomic.LoadUint32(&sent) != 0 {
				t.Fatalf("chan[%d]: send to full chan", chanCap)
			}
			// Ensure that non-blocking send does not block.
			select {
			case c <- 0:
				t.Fatalf("chan[%d]: send to full chan", chanCap)

		n.loader = nil
	}

	n.setState(complete)
	return n
}

// state atomically accesses the current state of the receiver.
func (n *Named) state() namedState {
	return namedState(atomic.LoadUint32(&n.state_))
}

// setState atomically stores the given state for n.
// Must only be called while holding n.mu.
func (n *Named) setState(state namedState) {
	atomic.StoreUint32(&n.state_, uint32(state))
}

	// assumed to be an ABI value.
	//
	// MUST BE LAST since all bits above this comprise the ABI.
	attrABIBase
)

func (a *Attribute) load() Attribute { return Attribute(atomic.LoadUint32((*uint32)(a))) }

func (a *Attribute) DuplicateOK() bool        { return a.load()&AttrDuplicateOK != 0 }
func (a *Attribute) MakeTypelink() bool       { return a.load()&AttrMakeTypelink != 0 }

		if doBreak != (err != nil) {
			t.Errorf("for iteration %d, doBreak=%v; unexpected error %v", i, doBreak, err)
		}
	}
	if got, want := atomic.LoadUint32(&gotConns), 1; int(got) != want {
		t.Errorf("GotConn calls = %v; want %v", got, want)
	}
	if got, want := atomic.LoadUint32(&numDials), numReqs; int(got) != want {
		t.Errorf("Dials = %v; want %v", got, want)
	}
}

// Issue 34941