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import scala.reflect.macros.blackbox.Context
import language.experimental.macros
object MyAttachment
object Macros {
def impl(c: Context) = {
import c.universe._
import internal._
val ident = updateAttachment(Ident(TermName("bar")), MyAttachment)
assert(attachments(ident).get[MyAttachment.type].isDefined, attachments(ident))
val typed = c.typecheck(ident)
assert(attachments(typed).get[MyAttachment.type].isDefined, attachments(typed))
c.Expr[Int](typed)
}
def foo = macro impl
}
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