[FIR] Add 3 type mismatch diagnostics

2020-08-12 14:45:57 +03:00
parent c8f8908a01
commit 61e21dadec
27 changed files with 736 additions and 114 deletions
@@ -11,7 +11,16 @@ import java.util.*;

 abstract class B : MutableList<Int>, AbstractList<Int>() {
    override fun removeAt(index: Int): Int = null!!
-    override fun remove(element: Int): Boolean = null!!
+    override fun remove(element: Int): <!RETURN_TYPE_MISMATCH_ON_OVERRIDE!>Boolean<!> = null!!
+}
+
+abstract class D : AbstractList<Int>() {
+    // removeAt() doesn't exist in java/util/AbstractList, it's a
+    // fake override of the method from kotlin/collections/MutableList
+    override fun removeAt(index: Int): Int = null!!
+    // AbstractList::remove() should return Int here. No fake overrides created.
+    // This may be a bug because the old compiler doesn't report a diagnostic here.
+    override fun remove(element: Int): <!RETURN_TYPE_MISMATCH_ON_OVERRIDE!>Boolean<!> = null!!
 }

 fun main(a: A, b: B, c: ArrayList<Int>) {