Update test

Author: odersky

tests/neg-custom-args/captures/i23207.check

@@ -5,3 +5,21 @@
    |             Required: A
    |
    | longer explanation available when compiling with `-explain`
+-- [E007] Type Mismatch Error: tests/neg-custom-args/captures/i23207.scala:18:13 ---------------------------------------
+18 |  val _: A = c // error
+   |             ^
+   |             Found:    (c : B^{b})
+   |             Required: A
+   |
+   | longer explanation available when compiling with `-explain`
+-- [E007] Type Mismatch Error: tests/neg-custom-args/captures/i23207.scala:23:2 ----------------------------------------
+23 |  class B extends A:   // error, now we see the error for the whole block since there are no nested errors
+   |  ^
+   |  Found:    A^{io}
+   |  Required: A
+24 |    val hide: AnyRef^{io} = io
+25 |  val b = new B
+26 |  val c = b.getBox.x
+27 |  c
+   |
+   | longer explanation available when compiling with `-explain`

tests/neg-custom-args/captures/i23207.scala

@@ -13,6 +13,16 @@ def leak(io: AnyRef^): A =
   val b = new B
   val box = b.getBox
   val a: A = box.x // error
-  val c = b.getBox.x // now OK
-  val _: B^{b} = c
-  c
+  val c = b.getBox.x
+  val _: B^{b} = c // ok
+  val _: A = c // error
+  c // no error here since we don't propagate expected type into the last expression of a block
+    // and the whole block's span overlaps with previous errors
+
+def leak2(io: AnyRef^): A =
+  class B extends A:   // error, now we see the error for the whole block since there are no nested errors
+    val hide: AnyRef^{io} = io
+
+  val b = new B
+  val c = b.getBox.x
+  c