KT-939 CommonSupertypes erases scopes associated to types

compiler/testData/diagnostics/tests/scopes/kt939.jet

@@ -0,0 +1,20 @@
+package kt939
+
+//+JDK
+
+//KT-939 CommonSupertypes erases scopes associated to types
+
+fun compare(o1 : String?, o2 : String?) : Int {
+    val l1 = o1?.length ?: 0
+    val l2 = o2?.length ?: 0
+    return l1 - l2 // '-' is unresolved, because the type of l1 is Int with an empty member scope
+}
+
+//KT-1117 Unresolved reference to multiply sign
+
+fun test() {
+    (System.getProperty("path.separator")?.length ?: 4) * 55 + 5
+
+    val x = System.getProperty("path.separator")?.length ?: 4
+    x * 55 + 5
+}