}
			// Only clear key if there are pointers in it.
			// This can only happen if pointers are 32 bit
			// wide as 64 bit pointers do not fit into a 32 bit key.
			if goarch.PtrSize == 4 && t.Key.Pointers() {
				// The key must be a pointer as we checked pointers are
				// 32 bits wide and the key is 32 bits wide also.
				*(*unsafe.Pointer)(k) = nil
			}

// pointer (because it doesn't know it's not a heap pointer).
//
//
// Global writes:
//
// The Go garbage collector requires write barriers when heap pointers
// are stored in globals. Many garbage collectors ignore writes to
// globals and instead pick up global -> heap pointers during
// termination. This increases pause time, so we instead rely on write

//go:noescape
func poll_oneoff(in, out unsafe.Pointer, nsubscriptions size, nevents unsafe.Pointer) errno

func write1(fd uintptr, p unsafe.Pointer, n int32) int32 {
	iov := iovec{
		buf:    uintptr32(uintptr(p)),
		bufLen: size(n),
	}
	var nwritten size
	if fd_write(int32(fd), unsafe.Pointer(&iov), 1, unsafe.Pointer(&nwritten)) != 0 {
		throw("fd_write failed")
	}
	return int32(nwritten)
}

func usleep(usec uint32) {

			}
			// Only clear key if there are pointers in it.
			if t.Key.Pointers() {
				if goarch.PtrSize == 8 {
					*(*unsafe.Pointer)(k) = nil
				} else {
					// There are three ways to squeeze at one or more 32 bit pointers into 64 bits.
					// Just call memclrHasPointers instead of trying to handle all cases here.
					memclrHasPointers(k, 8)
				}
			}

		st := wt[i].Strong()
		if st != bt[i] {
			t.Fatalf("weak pointer is not the same as strong pointer: %p vs. %p", st, bt[i])
		}
		if wp := weak.Make(st); wp != wt[i] {
			t.Fatalf("new weak pointer not equal to existing weak pointer: %v vs. %v", wp, wt[i])
		}
		if i == 0 {
			continue
		}
		if wt[i] == wt[i-1] {
			t.Fatalf("expected weak pointers to not be equal to each other, but got %v", wt[i])
		}
	}

//
//go:linkname noescape
//go:nosplit
func noescape(p unsafe.Pointer) unsafe.Pointer {
	x := uintptr(p)
	return unsafe.Pointer(x ^ 0)
}

// noEscapePtr hides a pointer from escape analysis. See noescape.
// USE CAREFULLY!
//
//go:nosplit
func noEscapePtr[T any](p *T) *T {
	x := uintptr(unsafe.Pointer(p))
	return (*T)(unsafe.Pointer(x ^ 0))
}

// Not all cgocallback frames are actually cgocallback,

	}
	err = syscall.Mprotect(b, syscall.PROT_NONE)
	if err != nil {
		panic(err)
	}
	// write inaccessible pointers as the data fields of bad1 and bad2.
	(*reflect.StringHeader)(unsafe.Pointer(&bad1)).Data = uintptr(unsafe.Pointer(&b[0]))
	(*reflect.StringHeader)(unsafe.Pointer(&bad2)).Data = uintptr(unsafe.Pointer(&b[1]))

	for _, test := range []struct {
		a, b interface{}
	}{
		{SI{s: bad1, i: 1}, SI{s: bad2, i: 2}},

			break
		}
		v := *(*unsafe.Pointer)(unsafe.Pointer(addr))
		if cgoIsGoPointer(v) && !isPinned(v) {
			throw(cgoWriteBarrierFail)
		}
	}
}

// cgoCheckBits checks the block of memory at src, for up to size
// bytes, and throws if it finds an unpinned Go pointer. The gcbits mark each
// pointer value. The src pointer is off bytes into the gcbits.
//
//go:nosplit
//go:nowritebarrier

	// we use reflect.Indirect here in order to obtain the actual value from a pointer.
	// we need an actual value in order to retrieve the package path for an object.
	// using reflect.Indirect indiscriminately is valid here, as all runtime.Objects are supposed to be pointers.
	if InternalObjectPreventer.IsForbidden(reflect.Indirect(reflect.ValueOf(obj)).Type().PkgPath()) {

	p := runtime.NumCPU()
	runtime.GOMAXPROCS(2 * p)

	// Allocate some pointers.
	ptrs := make([]*int, p)
	for i := 0; i < p; i++ {
		ptrs[i] = new(int)
	}

	// Arena where we read and write pointers like crazy.
	collider := make([]*int, p)

	done := make(chan struct{}, 2*p)

	// Start writers.  They alternately write a pointer
	// and nil to a slot in the collider.
	for i := 0; i < p; i++ {
		i := i