Test showing that consume does not work on boxed data

Author: odersky

tests/neg-custom-args/captures/boxed-consume.check

@@ -0,0 +1,12 @@
+-- Error: tests/neg-custom-args/captures/boxed-consume.scala:10:52 -----------------------------------------------------
+10 |  def h(consume x: (Object^, Object^)): Object^ = x._1  // error: local reach leak
+   |                                                  ^^^^
+   |                           Local reach capability x._1* leaks into capture scope of method h.
+   |                           You could try to abstract the capabilities referred to by x._1* in a capset variable.
+-- Error: tests/neg-custom-args/captures/boxed-consume.scala:16:10 -----------------------------------------------------
+16 |  println(d) // error
+   |          ^
+   |        Separation failure: Illegal access to (d : Object^), which was passed as a consume parameter to method g
+   |        on line 15 and therefore is no longer available.
+   |
+   |        where:    ^ refers to a fresh root capability in the type of value d

tests/neg-custom-args/captures/boxed-consume.scala

@@ -0,0 +1,22 @@
+import caps.*
+
+def Test =
+  val c: Object^ = "a"
+  val d: Object^ = "a"
+  val e1, e2: Object^ = "a"
+  val falseDeps: Object^ = "a"
+  def f[T](consume x: T): Unit = ()
+  def g(consume x: Object^): Unit = ()
+  def h(consume x: (Object^, Object^)): Object^ = x._1  // error: local reach leak
+  val cc = (c, c)
+  f(cc)  // no consume, it's boxed
+  f(c)   // no consume, it's boxed
+  println(c)  // ok
+  g(d)   // consume
+  println(d) // error
+  h((e1, e2))  // no consume, still boxed
+  println(e1)  // ok
+
+
+
+