6922300: [308] populate the reference_info for type annotations targeting primitive class literals

Reviewed-by: darcy, jjg
Contributed-by: mali@csail.mit.edu, mernst@cs.washington.edu

src/share/classes/com/sun/tools/javac/jvm/Gen.java

@@ -2158,6 +2158,11 @@ public class Gen extends JCTree.Visitor {
             code.emitop2(ldc2, makeRef(tree.pos(), tree.selected.type));
             result = items.makeStackItem(pt);
             return;
+        } else if (tree.name == names.TYPE) {
+            // Set the annotation positions for primitive class literals
+            // (e.g. int.class) which have been converted to TYPE field
+            // access on the corresponding boxed type (e.g. Integer.TYPE).
+            setTypeAnnotationPositions(tree.pos);
         }
 
         Symbol ssym = TreeInfo.symbol(tree.selected);