go

type Buffer struct {
	buf      []byte
	off      int
	lastRead int8
}

//go:nosplit
func BufferReset1(b *bytes.Buffer, p []byte) {
	buffer := (*Buffer)(unsafe.Pointer(b))
	buffer.off = 0
}

//go:nosplit
func BufferReset2(b *bytes.Buffer, p []byte) {
	buffer := (*Buffer)(unsafe.Pointer(b))
	buffer.buf = p
	buffer.off = 0
	buffer.lastRead = 0
}