//
//go:nosplit
func (span *mspan) typePointersOf(addr, size uintptr) typePointers {
	base := span.objBase(addr)
	tp := span.typePointersOfUnchecked(base)
	if base == addr && size == span.elemsize {
		return tp
	}
	return tp.fastForward(addr-tp.addr, addr+size)
}

// typePointersOfUnchecked is like typePointersOf, but assumes addr is the base

		// Fortunately we have the type information.
		systemstack(func() {
			cgoCheckUsingType(typ, src, off, size)
		})
		return
	}

	// src must be in the regular heap.
	tp := s.typePointersOf(uintptr(src), size)
	for {
		var addr uintptr
		if tp, addr = tp.next(uintptr(src) + size); addr == 0 {
			break
		}
		v := *(*unsafe.Pointer)(unsafe.Pointer(addr))
		if cgoIsGoPointer(v) && !isPinned(v) {

		if p == nil {
			throw("heapdump: out of memory")
		}
		tmpbuf = (*[1 << 30]byte)(p)[:n]
	}
	// Convert heap bitmap to pointer bitmap.
	clear(tmpbuf[:nptr/8+1])
	s := spanOf(p)
	tp := s.typePointersOf(p, size)
	for {
		var addr uintptr
		if tp, addr = tp.next(p + size); addr == 0 {
			break
		}
		i := (addr - p) / goarch.PtrSize
		tmpbuf[i/8] |= 1 << (i % 8)
	}