'sealed' reserved in front of when

compiler/testData/diagnostics/tests/when/ReservedExhaustiveWhen.kt

@@ -0,0 +1,37 @@
+// !DIAGNOSTICS: -UNUSED_PARAMETER
+
+infix fun Any.sealed(a: Any?) {}
+
+val x = 1 <!UNSUPPORTED!>sealed<!> when (1) {
+    1 -> 1
+    else -> 2
+}
+
+val x1 = 1 <!UNSUPPORTED!>sealed<!> /**/ when (1) {
+    1 -> 1
+    else -> 2
+}
+
+fun foo() {
+    <!UNRESOLVED_REFERENCE, UNSUPPORTED!>sealed<!><!SYNTAX!><!> when {
+        else -> {}
+    }
+
+    1 <!UNSUPPORTED!>sealed<!> when {
+        else -> {}
+    }
+
+    1 sealed (when {
+        else -> {}
+    })
+
+    <!UNUSED_EXPRESSION!>1<!>
+    <!UNRESOLVED_REFERENCE, UNSUPPORTED!>sealed<!><!SYNTAX!><!> when {
+        else -> {}
+    }
+
+    1 <!UNSUPPORTED!>sealed<!>
+    when {
+        else -> {}
+    }
+}

compiler/testData/diagnostics/tests/when/ReservedExhaustiveWhen.txt

@@ -0,0 +1,6 @@
+package
+
+public val x: kotlin.Unit
+public val x1: kotlin.Unit
+public fun foo(): kotlin.Unit
+public infix fun kotlin.Any.sealed(/*0*/ a: kotlin.Any?): kotlin.Unit