8026963: type annotations code crashes for code with erroneous trees

Reviewed-by: jjg, jlahoda

src/share/classes/com/sun/tools/javac/comp/Attr.java

@@ -4602,9 +4602,8 @@ public class Attr extends JCTree.Visitor {
                         validateAnnotatedType(t, t.type);
                     }
                     repeat = false;
-                } else if (enclTr.getKind() == JCTree.Kind.PRIMITIVE_TYPE) {
-                    // This happens in test TargetTypeTest52.java
-                    // Is there anything to do?
+                } else if (enclTr.getKind() == JCTree.Kind.PRIMITIVE_TYPE ||
+                           enclTr.getKind() == JCTree.Kind.ERRONEOUS) {
                     repeat = false;
                 } else {
                     Assert.error("Unexpected tree: " + enclTr + " with kind: " + enclTr.getKind() +

test/tools/javac/T8026963/TypeAnnotationsCrashWithErroneousTreeTest.java

+/*
+ * @test /nodynamiccopyright/
+ * @bug 8026963
+ * @summary type annotations code crashes for lambdas with void argument
+ * @compile/fail/ref=TypeAnnotationsCrashWithErroneousTreeTest.out -XDrawDiagnostics -XDshouldStopPolicy=FLOW TypeAnnotationsCrashWithErroneousTreeTest.java
+ */
+
+public class TypeAnnotationsCrashWithErroneousTreeTest {
+    private void t(this) {}
+}

test/tools/javac/T8026963/TypeAnnotationsCrashWithErroneousTreeTest.out

+TypeAnnotationsCrashWithErroneousTreeTest.java:9:20: compiler.err.illegal.start.of.type
+1 error