[FIR] Remove dependent data flow variables after receiver reassignment

2021-12-14 22:01:45 +03:00
parent 1f9ea50d1a
commit c5a03d0573
11 changed files with 184 additions and 25 deletions
@@ -0,0 +1,41 @@
+class My(val x: My?, val z: My? = null)
+
+fun baseTest() {
+    var y: My? = My(My(null))
+    if (y?.x != null) {
+        y.x.x
+        y = My(null)
+        y.x<!UNSAFE_CALL!>.<!>x
+    }
+}
+
+fun deepChainTest() {
+    var y: My? = My(My(null))
+    if (y?.x?.x != null) {
+        y.x.x.x
+        y = My(null)
+        y.x<!UNSAFE_CALL!>.<!>x<!UNSAFE_CALL!>.<!>x
+    }
+}
+
+fun backwardAliasTest(z: My) {
+    var y = z
+    if (y.x != null) {
+        y.x.x
+        y = My(null)
+        y.x<!UNSAFE_CALL!>.<!>x
+    }
+}
+
+fun severalMembersTest() {
+    var y = My(My(null), My(null))
+    if (y.x != null) {
+        if (y.z != null) {
+            y.x.x
+            y.z.z
+            y = My(null)
+            y.x<!UNSAFE_CALL!>.<!>x
+            y.z<!UNSAFE_CALL!>.<!>z
+        }
+    }
+}