Properly check whether nullability of receiver argument fits to parameter's nullability

It's should behave like we check isSubtype(receiverType, parameterType) + use nullability info from smart cast #KT-1090 Fixed
2015-08-26 11:29:18 +03:00
parent 70d4a7997e
commit aad977d204
13 changed files with 267 additions and 10 deletions
@@ -0,0 +1,40 @@
+// !DIAGNOSTICS: -UNUSED_VALUE,-UNUSED_VARIABLE,-ASSIGNED_BUT_NEVER_ACCESSED_VARIABLE,-BASE_WITH_NULLABLE_UPPER_BOUND,-VARIABLE_WITH_REDUNDANT_INITIALIZER
+
+class A<T : CharSequence?, E1 : T, E2: T?> {
+    fun T.bar() {}
+
+    fun foo(x: E1, y: E2) {
+        x.bar()
+
+        if (1 == 1) {
+            y<!UNSAFE_CALL!>.<!>bar()
+        }
+
+        x?.bar()
+        y?.bar()
+
+
+        var t: T = x
+        var tN: T? = y
+
+        // condition needed to make smart cast on tN impossible
+        if (1 == 1) {
+            tN = x
+        }
+
+        if (1 == 1) {
+            t = <!TYPE_MISMATCH!>tN<!>
+        }
+
+        t = <!TYPE_MISMATCH!>y<!>
+
+        // Could be smart-cast
+        if (y != null) {
+            t = <!TYPE_MISMATCH!>y<!>
+        }
+
+        if (tN != null) {
+            t = <!DEBUG_INFO_SMARTCAST!>tN<!>
+        }
+    }
+}