func (t) f() {
}

func x() {
	x := t{}.f // ERROR "t{}.f escapes to heap"
	x()
}

func y() {
	var i int       // ERROR "moved to heap: i"
	y := (&t{&i}).f // ERROR "\(&t{...}\).f escapes to heap" "&t{...} escapes to heap"
	y()
}

func z() {
	var i int    // ERROR "moved to heap: i"
	z := t{&i}.f // ERROR "t{...}.f escapes to heap"
	z()

// This example demonstrates a priority queue built using the heap interface.
package heap_test

import (
	"container/heap"
	"fmt"
)

// An Item is something we manage in a priority queue.
type Item struct {
	value    string // The value of the item; arbitrary.
	priority int    // The priority of the item in the queue.
	// The index is needed by update and is maintained by the heap.Interface methods.

	}

	// Force x to be allocated on the heap.
	sink = &x
	sink = nil

	// Go to deferreturn after the panic below.
	defer func() {
		recover()
	}()

	// This call collects the heap-allocated version of x (oops!)
	runtime.GC()

	// Allocate that same object again and clobber it.
	y := new([20]byte)
	for i := 0; i < 20; i++ {
		y[i] = 99
	}
	// Make sure y is heap allocated.
	sink = y

	panic(nil)

// - Maps and channels contains no-in-heap types are disallowed.
//
// 4. Write barriers on pointers to not-in-heap types can be omitted.
//
// The last point is the real benefit of NotInHeap. The runtime uses
// it for low-level internal structures to avoid memory barriers in the
// scheduler and the memory allocator where they are illegal or simply

	return foo(foo(bar(a, b)))
}

func tbff1() *string {
	a := "cat"
	b := "dog" // ERROR "moved to heap: b$"
	u := bff(&a, &b)
	_ = u[0]
	return &b
}

// BAD: need fine-grained analysis to track u[0] and u[1] differently.
func tbff2() *string {
	a := "cat" // ERROR "moved to heap: a$"
	b := "dog" // ERROR "moved to heap: b$"
	u := bff(&a, &b)
	_ = u[0]
	return u[1]
}

		p = alloc(3) // ERROR "inlining call to alloc" "moved to heap: x"
	}
	f()
}

func f2() {} // ERROR "can inline f2"

// No inline for recover; panic now allowed to inline.
func f3() { panic(1) } // ERROR "can inline f3" "1 escapes to heap"
func f4() { recover() }

func f5() *byte { // ERROR "can inline f5"
	type T struct {
		x [1]byte
	}
	t := new(T) // ERROR "new.T. escapes to heap"

			}
		}
	}()

	return q
}

func (q *Queue) Len() int {
	q.mutex.Lock()
	defer q.mutex.Unlock()
	return q.heap.Len()
}

func (q *Queue) Schedule(handler func(), deadline time.Time) {
	// Add the timer to the heap.
	q.mutex.Lock()
	heap.Push(&q.heap, &entry{
		handler:  handler,
		deadline: deadline,
		index:    0,
	})
	q.mutex.Unlock()

	// Request that the timer be reset.

	if err != nil {
		return err
	}

	// copy heap to new mapping
	if uint64(oldlen+len(out.heap)) > filesize {
		panic("mmap size too small")
	}
	copy(out.buf[oldlen:], out.heap)
	out.heap = out.heap[:0]
	return nil
}

func (out *OutBuf) munmap() {
	if out.buf == nil {
		return
	}
	syscall.Munmap(out.buf)
	out.buf = nil

func f1() {
	var t T
	f := t.noescape // ERROR "t.noescape does not escape"
	f()
}

func f2() {
	var t T       // ERROR "moved to heap"
	f := t.escape // ERROR "t.escape does not escape"
	f()
}

func f3() {
	var t T        // ERROR "moved to heap"
	f := t.returns // ERROR "t.returns does not escape"
	sink = f()
}

type T struct{}

func (pq priorityQueue) Less(i, j int) bool {
	// Flip logic to make this a min queue.
	if pq[i].deadline == pq[j].deadline {
		return pq[i].index < pq[j].index
	}
	return pq[i].deadline < pq[j].deadline
}

// Swap implements heap.Interface/sort.Interface
func (pq priorityQueue) Swap(i, j int) {
	pq[i], pq[j] = pq[j], pq[i]
}

// Push implements heap.Interface for pushing an item into the heap