type T struct {
	X int
}

var t T

func isUintptr(uintptr) {}

type T2 struct {
	A int32
	U2
}

type U2 struct {
	B int32
	C int32
}

var t2 T2
var p2 *T2

func main() {
	// Test unsafe.Sizeof, unsafe.Alignof, and unsafe.Offsetof all return uintptr.
	isUintptr(unsafe.Sizeof(t))
	isUintptr(unsafe.Alignof(t))
	isUintptr(unsafe.Offsetof(t.X))

	}

	// package unsafe:
	// "any pointer or value of underlying type uintptr can be converted into a unsafe.Pointer"
	if (isPointer(Vu) || isUintptr(Vu)) && isUnsafePointer(Tu) {
		return true
	}
	// "and vice versa"
	if isUnsafePointer(Vu) && (isPointer(Tu) || isUintptr(Tu)) {
		return true
	}

	// "V is a slice, T is an array or pointer-to-array type,

	}

	// package unsafe:
	// "any pointer or value of underlying type uintptr can be converted into a unsafe.Pointer"
	if (isPointer(Vu) || isUintptr(Vu)) && isUnsafePointer(Tu) {
		return true
	}
	// "and vice versa"
	if isUnsafePointer(Vu) && (isPointer(Tu) || isUintptr(Tu)) {
		return true
	}

	// "V is a slice, T is an array or pointer-to-array type,

						f.Fatalf("nilcheck must have void type %s", v.Type.String())
					}
				} else {
					if !v.Type.IsPtrShaped() && !v.Type.IsUintptr() {
						f.Fatalf("nilcheck must have pointer type %s", v.Type.String())
					}
				}
				if !v.Args[0].Type.IsPtrShaped() && !v.Args[0].Type.IsUintptr() {
					f.Fatalf("nilcheck must have argument of pointer type %s", v.Args[0].Type.String())
				}
				if !v.Args[1].Type.IsMemory() {

			return ir.OSTR2RUNES, ""
		}
	}

	// 8. src is a pointer or uintptr and dst is unsafe.Pointer.
	if (src.IsPtr() || src.IsUintptr()) && dst.IsUnsafePtr() {
		return ir.OCONVNOP, ""
	}

	// 9. src is unsafe.Pointer and dst is a pointer or uintptr.
	if src.IsUnsafePtr() && (dst.IsPtr() || dst.IsUintptr()) {
		return ir.OCONVNOP, ""
	}

	// 10. src is a slice and dst is an array or pointer-to-array.

			// like fixedbugs/issue24491a.go correctly.
			//
			// TODO(mdempsky): Limit to static callees with
			// //go:uintptr{escapes,keepalive}?
			if arg.Type().IsUintptr() && arg.X.Type().IsUnsafePtr() {
				visit(&arg.X)
				return
			}

		case ir.OARRAYLIT, ir.OSLICELIT, ir.OSTRUCTLIT:
			// TODO(mdempsky): For very large slices, it may be preferable

	n.X = walkExpr(n.X, init)
	if n.Op() == ir.OCONVNOP && n.Type() == n.X.Type() {
		return n.X
	}
	if n.Op() == ir.OCONVNOP && ir.ShouldCheckPtr(ir.CurFunc, 1) {
		if n.Type().IsUnsafePtr() && n.X.Type().IsUintptr() { // uintptr to unsafe.Pointer
			return walkCheckPtrArithmetic(n, init)
		}
	}
	param, result := rtconvfn(n.X.Type(), n.Type())
	if param == types.Txxx {
		return n
	}

	return t.cache.ptr != nil
}

// IsUnsafePtr reports whether t is an unsafe pointer.
func (t *Type) IsUnsafePtr() bool {
	return t.kind == TUNSAFEPTR
}

// IsUintptr reports whether t is a uintptr.
func (t *Type) IsUintptr() bool {
	return t.kind == TUINTPTR
}

// IsPtrShaped reports whether t is represented by a single machine pointer.

(Load <t> (OffPtr [off]                       (Addr {s} sb)       ) _) && t.IsUintptr() && isFixedSym(s, off) => (Addr {fixedSym(b.Func, s, off)} sb)
(Load <t> (OffPtr [off]              (Convert (Addr {s} sb) _)    ) _) && t.IsUintptr() && isFixedSym(s, off) => (Addr {fixedSym(b.Func, s, off)} sb)
(Load <t> (OffPtr [off] (ITab (IMake          (Addr {s} sb)    _))) _) && t.IsUintptr() && isFixedSym(s, off) => (Addr {fixedSym(b.Func, s, off)} sb)

			break
		}
		s := auxToSym(v_0_0.Aux)
		sb := v_0_0.Args[0]
		if !(t.IsUintptr() && isFixedSym(s, off)) {
			break
		}
		v.reset(OpAddr)
		v.Aux = symToAux(fixedSym(b.Func, s, off))
		v.AddArg(sb)
		return true
	}
	// match: (Load <t> (OffPtr [off] (Convert (Addr {s} sb) _) ) _)
	// cond: t.IsUintptr() && isFixedSym(s, off)
	// result: (Addr {fixedSym(b.Func, s, off)} sb)
	for {