if checkptrStraddles(ptr, uintptr(len64)) {
		throw("checkptr: unsafe.String result straddles multiple allocations")
	}
}

func panicunsafestringlen() {
	panic(errorString("unsafe.String: len out of range"))
}

func panicunsafestringnilptr() {
	panic(errorString("unsafe.String: ptr is nil and len is not zero"))
}

// Keep this code in sync with cmd/compile/internal/walk/builtin.go:walkUnsafeSlice

//
//	p = unsafe.Pointer(uintptr(p) + offset)
//
// The most common use of this pattern is to access fields in a struct
// or elements of an array:
//
//	// equivalent to f := unsafe.Pointer(&s.f)
//	f := unsafe.Pointer(uintptr(unsafe.Pointer(&s)) + unsafe.Offsetof(s.f))
//
//	// equivalent to e := unsafe.Pointer(&x[i])
//	e := unsafe.Pointer(uintptr(unsafe.Pointer(&x[0])) + i*unsafe.Sizeof(x[0]))
//

func Float32bits(f float32) uint32 { return *(*uint32)(unsafe.Pointer(&f)) }

// Float32frombits returns the floating-point number corresponding
// to the IEEE 754 binary representation b, with the sign bit of b
// and the result in the same bit position.
// Float32frombits(Float32bits(x)) == x.
func Float32frombits(b uint32) float32 { return *(*float32)(unsafe.Pointer(&b)) }

package main

import "unsafe"

func init() {
	register("panicOnNilAndEleSizeIsZero", panicOnNilAndEleSizeIsZero)
}

func panicOnNilAndEleSizeIsZero() {
	var p *struct{}
	_ = unsafe.Slice(p, 5)

	unsafe.Offsetof(heapStatsDelta{}.smallFreeCount),
	unsafe.Offsetof(heapStatsDelta{}.largeAlloc),
	unsafe.Offsetof(heapStatsDelta{}.largeAllocCount),
	unsafe.Offsetof(heapStatsDelta{}.largeFree),
	unsafe.Offsetof(heapStatsDelta{}.largeFreeCount),
	unsafe.Offsetof(heapStatsDelta{}.committed),
	unsafe.Offsetof(heapStatsDelta{}.released),
	unsafe.Offsetof(heapStatsDelta{}.inHeap),
	unsafe.Offsetof(heapStatsDelta{}.inStacks),

	var base *Value
	var derived *Block
	if unsafe.Sizeof(base)%unsafe.Sizeof(derived) != 0 {
		panic("bad")
	}
	scale := unsafe.Sizeof(base) / unsafe.Sizeof(derived)
	b := c.allocValueSlice(int((uintptr(n) + scale - 1) / scale))
	s := unsafeheader.Slice{
		Data: unsafe.Pointer(&b[0]),
		Len:  n,
		Cap:  cap(b) * int(scale),
	}
	return *(*[]*Block)(unsafe.Pointer(&s))
}

	call := libcall{
		fn:   uintptr(unsafe.Pointer(&libc_setgroups)),
		n:    2,
		args: uintptr(unsafe.Pointer(&ngid)),
	}
	asmcgocall(unsafe.Pointer(&asmsysvicall6x), unsafe.Pointer(&call))
	return call.err
}

//go:nosplit
//go:linkname syscall_setrlimit
//go:cgo_unsafe_args
func syscall_setrlimit(which uintptr, lim unsafe.Pointer) (err uintptr) {
	call := libcall{
		fn:   uintptr(unsafe.Pointer(&libc_setrlimit)),

	if r0 != 0 {

package main

import (
	"math"
	"unsafe"
)

const maxUintptr = 1 << (8 * unsafe.Sizeof(uintptr(0)))

func main() {
	var p [10]byte

	// unsafe.Add
	{
		p1 := unsafe.Pointer(&p[1])
		assert(unsafe.Add(p1, 1) == unsafe.Pointer(&p[2]))
		assert(unsafe.Add(p1, -1) == unsafe.Pointer(&p[0]))
	}

	// unsafe.Slice
	{
		s := unsafe.Slice(&p[0], len(p))
		assert(&s[0] == &p[0])

)

func Bpx4ptr(request int32, pid int32, addr unsafe.Pointer, data unsafe.Pointer, buffer unsafe.Pointer) (rv int32, rc int32, rn int32) {
	var parms [8]unsafe.Pointer
	parms[0] = unsafe.Pointer(&request)
	parms[1] = unsafe.Pointer(&pid)
	parms[2] = unsafe.Pointer(&addr)
	parms[3] = unsafe.Pointer(&data)
	parms[4] = unsafe.Pointer(&buffer)
	parms[5] = unsafe.Pointer(&rv)
	parms[6] = unsafe.Pointer(&rc)
	parms[7] = unsafe.Pointer(&rn)