FIR checker: report SMARTCAST_IMPOSSIBLE for local variables

2021-05-13 17:23:18 -07:00
parent 092750e215
commit 0ecc752813
38 changed files with 792 additions and 99 deletions
@@ -0,0 +1,38 @@
+fun foo(x: Int, y: Any?, z: Int) {}
+
+fun myRun(block: () -> Unit): Any? {
+    return null
+}
+
+fun test_1() {
+    var x: String? = null
+    if (x != null) {
+        foo(
+            x.length, // stable smartcast
+            run { x = "" },
+            x.length  // stable smartcast
+        )
+    }
+}
+
+fun test_2() {
+    var x: String? = null
+    if (x != null) {
+        foo(
+            x.length, // stable smartcast
+            myRun { x = "" },
+            <!SMARTCAST_IMPOSSIBLE!>x<!>.length  // unstable smartcast
+        )
+    }
+}
+
+fun test_3() {
+    var x: String? = null
+    if (x != null) {
+        foo(
+            x.length, // stable smartcast
+            { x = "" },
+            <!SMARTCAST_IMPOSSIBLE!>x<!>.length  // stable smartcast
+        )
+    }
+}