KT-4107 Data objects

compiler/testData/diagnostics/tests/dataClasses/dataObjectLiteral.kt

@@ -0,0 +1,10 @@
+// FIR_IDENTICAL
+// LANGUAGE: +DataObjects
+
+interface I {
+    fun foo()
+}
+
+val o = <!UNRESOLVED_REFERENCE!>data<!><!SYNTAX!><!> object<!SYNTAX!><!>: I {
+    override fun foo() {}
+}