Data flow info: correct disjunction of a type with Nothing: Type U Nothing = Type #KT-9578 Fixed

2016-01-18 14:59:24 +03:00
parent 5d3186ac49
commit 9360bd49a6
6 changed files with 61 additions and 3 deletions
@@ -0,0 +1,21 @@
+fun foo(s: Any): String {
+    val x = when (s) {
+        is String -> s
+        is Int -> "$s"
+        else -> return ""
+    }
+
+    val y: String = <!DEBUG_INFO_SMARTCAST!>x<!> // should be Ok
+    return y
+}
+
+fun bar(s: Any): String {
+    val x = when (s) {
+        is String -> s <!USELESS_CAST!>as String<!> // meaningless
+        is Int -> "$s"
+        else -> return ""
+    }
+
+    val y: String = x // no error
+    return y
+}
@@ -0,0 +1,4 @@
+package
+
+public fun bar(/*0*/ s: kotlin.Any): kotlin.String
+public fun foo(/*0*/ s: kotlin.Any): kotlin.String