test/langtools/tools/javac/switchexpr/BreakTest.java

*** 64,74 ****
          assert tool != null;
          DiagnosticListener<JavaFileObject> noErrors = d -> {};
  
          StringWriter out = new StringWriter();
          JavacTask ct = (JavacTask) tool.getTask(out, null, noErrors,
!             List.of("-XDdev", "--enable-preview", "-source", "12"), null,
              Arrays.asList(new MyFileObject(CODE)));
          List<String> labels = new ArrayList<>();
          new TreePathScanner<Void, Void>() {
              @Override
              public Void visitBreak(BreakTree node, Void p) {
--- 64,74 ----
          assert tool != null;
          DiagnosticListener<JavaFileObject> noErrors = d -> {};
  
          StringWriter out = new StringWriter();
          JavacTask ct = (JavacTask) tool.getTask(out, null, noErrors,
!             List.of("-XDdev", "--enable-preview", "-source", "13"), null,
              Arrays.asList(new MyFileObject(CODE)));
          List<String> labels = new ArrayList<>();
          new TreePathScanner<Void, Void>() {
              @Override
              public Void visitBreak(BreakTree node, Void p) {