}

func (s *gcSizes) Alignof(T Type) (result int64) {
	defer func() {
		assert(result >= 1)
	}()

	// For arrays and structs, alignment is defined in terms
	// of alignment of the elements and fields, respectively.
	switch t := under(T).(type) {
	case *Array:
		// spec: "For a variable x of array type: unsafe.Alignof(x)
		// is the same as unsafe.Alignof(x[0]), but at least 1."
		return s.Alignof(t.elem)

}

// stdSizes is used if Config.Sizes == nil.
var stdSizes = SizesFor("gc", "amd64")

func (conf *Config) alignof(T Type) int64 {
	f := stdSizes.Alignof
	if conf.Sizes != nil {
		f = conf.Sizes.Alignof
	}
	if a := f(T); a >= 1 {
		return a
	}
	panic("implementation of alignof returned an alignment < 1")
}

func (conf *Config) offsetsof(T *Struct) []int64 {
	var offsets []int64

}

func (s *gcSizes) Alignof(T Type) (result int64) {
	defer func() {
		assert(result >= 1)
	}()

	// For arrays and structs, alignment is defined in terms
	// of alignment of the elements and fields, respectively.
	switch t := under(T).(type) {
	case *Array:
		// spec: "For a variable x of array type: unsafe.Alignof(x)
		// is the same as unsafe.Alignof(x[0]), but at least 1."
		return s.Alignof(t.elem)

}

// stdSizes is used if Config.Sizes == nil.
var stdSizes = SizesFor("gc", "amd64")

func (conf *Config) alignof(T Type) int64 {
	f := stdSizes.Alignof
	if conf.Sizes != nil {
		f = conf.Sizes.Alignof
	}
	if a := f(T); a >= 1 {
		return a
	}
	panic("implementation of alignof returned an alignment < 1")
}

func (conf *Config) offsetsof(T *Struct) []int64 {
	var offsets []int64

	assert(pp == 8)
	const ll = unsafe.Alignof(l)
	assert(ll == 8)
	const ff = unsafe.Alignof(f)
	assert(ff == 8)
	const ii = unsafe.Alignof(i)
	assert(ii == 8)
	const cc = unsafe.Alignof(c)
	assert(cc == 8)
	const mm = unsafe.Alignof(m)
	assert(mm == 8)
	const _ = unsafe /* ERROR "not constant" */ .Alignof(t)
}

// unsafe.Offsetof

func _[T comparable]() {
	var (

	if n != 4 && n != 8 {
		println("BUG sizeof 0", n)
		return
	}
	n = unsafe.Alignof(0)
	if n != 4 && n != 8 {
		println("BUG alignof 0", n)
		return
	}
	
	n = unsafe.Sizeof("")
	if n != 8 && n != 16 {
		println("BUG sizeof \"\"", n)
		return
	}
	n = unsafe.Alignof("")
	if n != 4 && n != 8 {
		println("BUG alignof \"\"", n)
		return
	}

package main

import (
	"time"
	"unsafe"
)

func f(int)

func main() {
	unsafe.Alignof(0) // ERROR "unsafe\.Alignof|value computed is not used"
	f(time.Wednesday) // ERROR "time.Wednesday|incompatible type"

		panic(fmt.Sprintf("got %d, want %d", got, want))
	}
	if got, want := align(v1), unsafe.Alignof(v1); got != want {
		panic(fmt.Sprintf("got %d, want %d", got, want))
	}

	v2 := "abc"
	if got, want := size(v2), unsafe.Sizeof(v2); got != want {
		panic(fmt.Sprintf("got %d, want %d", got, want))
	}
	if got, want := align(v2), unsafe.Alignof(v2); got != want {
		panic(fmt.Sprintf("got %d, want %d", got, want))
	}

// Their contents must be kept in sync with their definitions.
// Because the host and target type sizes can differ, the compiler and
// linker cannot use the host information that they might get from
// either unsafe.Sizeof and Alignof, nor runtime, reflect, or reflectlite.

// CommonSize returns sizeof(Type) for a compilation target with a given ptrSize
func CommonSize(ptrSize int) int { return 4*ptrSize + 8 + 8 }

	unsafe /* ERROR "not used" */ .Alignof(x)

	var y S0
	assert(unsafe.Alignof(y.a) == 1)
	assert(unsafe.Alignof(y.b) == 4)
	assert(unsafe.Alignof(y.c) == 8)
	assert(unsafe.Alignof(y.d) == 1)
	assert(unsafe.Alignof(y.e) == 8)

	var s []byte
	_ = unsafe.Alignof(s)
	_ = unsafe.Alignof(s... /* ERROR "invalid use of ..." */ )
}

func Alignof2() {
	f1 := func() (x int32) { return }