--- a/src/jdk.compiler/share/classes/com/sun/tools/javac/parser/JavacParser.java	Thu May 16 09:21:49 2019 +0200
+++ b/src/jdk.compiler/share/classes/com/sun/tools/javac/parser/JavacParser.java	Thu May 16 16:42:14 2019 +0200
@@ -1655,6 +1655,7 @@
                         case DOUBLELITERAL: case CHARLITERAL: case STRINGLITERAL:
                         case TRUE: case FALSE: case NULL:
                         case NEW: case IDENTIFIER: case ASSERT: case ENUM: case UNDERSCORE:
+                        case SWITCH:
                         case BYTE: case SHORT: case CHAR: case INT:
                         case LONG: case FLOAT: case DOUBLE: case BOOLEAN: case VOID:
                             return ParensResult.CAST;