v3;
package notinheap
pkgpath notinheap
init notinheap ~notinheap
types 3 2 30 18
type 1 "S" notinheap <type 2>

package notinheap

//go:notinheap

type okay1 *nih

type okay2 []nih

type okay3 func(x nih) nih

type okay4 interface {
	f(x nih) nih
}

// Type conversions don't let you sneak past notinheap.

type t1 struct{ x int }

//go:notinheap
type t2 t1

//go:notinheap
type t3 byte

//go:notinheap
type t4 rune

var sink interface{}

func i() {

type embed1 struct { // implicitly notinheap
	x nih
}

type embed2 [1]nih // implicitly notinheap

type embed3 struct { // implicitly notinheap
	x [1]nih
}

// Type aliases inherit the go:notinheap-ness of the type they alias.
type nihAlias = nih

type embedAlias1 struct { // implicitly notinheap
	x nihAlias
}
type embedAlias2 [1]nihAlias // implicitly notinheap

func g() {

package main

import "runtime/cgo"

type iface interface {
	Get() int
}

type notInHeap struct {
	_ cgo.Incomplete
	i int
}

type myInt struct {
	f *notInHeap
}

func (mi myInt) Get() int {
	return int(mi.f.i)
}

type embed struct {
	*myInt
}

var val = 1234

var valNotInHeap = notInHeap{i: val}

func main() {
	i := val
	check(i)
	mi := myInt{f: &valNotInHeap}

	}

	v = ValueOf((*nih)(unsafe.Pointer(new(int))))
	shouldPanic("reflect: reflect.Value.Elem on an invalid notinheap pointer", func() { v.Elem() })
	shouldPanic("reflect: reflect.Value.Pointer on an invalid notinheap pointer", func() { v.Pointer() })
	shouldPanic("reflect: reflect.Value.UnsafePointer on an invalid notinheap pointer", func() { v.UnsafePointer() })

	if n > 0 {
		recurseHANDLE(n-1, p, v)
	}
	if uintptr(unsafe.Pointer(p)) != v {
		panic("adjusted notinheap pointer")
	}
}

func recurseHWND(n int, p C.HWND, v uintptr) {
	if n > 0 {
		recurseHWND(n-1, p, v)
	}
	if uintptr(unsafe.Pointer(p)) != v {
		panic("adjusted notinheap pointer")
	}

//
// traceRegionAllocBlock is allocated from non-GC'd memory, so it must not
// contain heap pointers. Writes to pointers to traceRegionAllocBlocks do
// not need write barriers.
type traceRegionAllocBlock struct {
	_ sys.NotInHeap
	traceRegionAllocBlockHeader
	data [traceRegionAllocBlockData]byte
}

type traceRegionAllocBlockHeader struct {
	next *traceRegionAllocBlock
	off  atomic.Uintptr
}

// NOTE: keep in sync with cmd/compile/internal/types.CalcSize
// to make the compiler recognize this as an intrinsic type.
type nih struct{}

// NotInHeap is a type must never be allocated from the GC'd heap or on the stack,
// and is called not-in-heap.
//
// Other types can embed NotInHeap to make it not-in-heap. Specifically, pointers
// to these types must always fail the `runtime.inheap` check. The type may be used

//     get shifted out during iteration, and new nodes will just be appended to the 0th child).
type traceMapNode struct {
	_ sys.NotInHeap

	children [4]atomic.UnsafePointer // *traceMapNode (can't use generics because it's notinheap)
	hash     uintptr
	id       uint64
	data     []byte
}

// stealID steals an ID from the table, ensuring that it will not
// appear in the table anymore.