8239596: PARAMETER annotation on receiver type does not cause error

Reviewed-by: vromero

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

@@ -5489,8 +5489,7 @@ public class Attr extends JCTree.Visitor {
         public void visitMethodDef(JCMethodDecl tree) {
             if (tree.recvparam != null &&
                     !tree.recvparam.vartype.type.isErroneous()) {
-                checkForDeclarationAnnotations(tree.recvparam.mods.annotations,
-                        tree.recvparam.vartype.type.tsym);
+                checkForDeclarationAnnotations(tree.recvparam.mods.annotations, tree.recvparam.sym);
             }
             if (tree.restype != null && tree.restype.type != null) {
                 validateAnnotatedType(tree.restype, tree.restype.type);

test/langtools/tools/javac/annotations/TestParameterAnnotationOnReceiverType.java

@@ -0,0 +1,87 @@
+/*
+ * Copyright (c) 2021, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * @test
+ * @bug 8239596
+ * @summary PARAMETER annotation on receiver type should cause error
+ * @library /tools/lib
+ * @modules jdk.compiler/com.sun.tools.javac.api
+ *          jdk.compiler/com.sun.tools.javac.main
+ * @build toolbox.ToolBox toolbox.JavacTask
+ * @run main TestParameterAnnotationOnReceiverType
+ */
+
+import java.util.List;
+import java.util.Arrays;
+
+import toolbox.ToolBox;
+import toolbox.TestRunner;
+import toolbox.JavacTask;
+import toolbox.Task;
+
+public class TestParameterAnnotationOnReceiverType extends TestRunner {
+    ToolBox tb;
+
+    public TestParameterAnnotationOnReceiverType() {
+        super(System.err);
+        tb = new ToolBox();
+    }
+
+    public static void main(String[] args) throws Exception {
+        TestParameterAnnotationOnReceiverType t = new TestParameterAnnotationOnReceiverType();
+        t.runTests();
+    }
+
+    @Test
+    public void testReceiverTypeDoesNotCauseError() throws Exception {
+        String code = """
+                import java.lang.annotation.ElementType;
+                import java.lang.annotation.Retention;
+                import java.lang.annotation.RetentionPolicy;
+                import java.lang.annotation.Target;
+                class Test8239596 {
+                    @Retention(RetentionPolicy.RUNTIME)
+                    @Target({ElementType.TYPE_USE})
+                    @interface TypeUse { }
+
+                    @Retention(RetentionPolicy.RUNTIME)
+                    @Target({ElementType.PARAMETER})
+                    @interface Param { }
+
+                    public void test(@TypeUse @Param Test8239596 this) { }
+                }""";
+
+        List<String> output = new JavacTask(tb)
+                .sources(code)
+                .classpath(".")
+                .options("-XDrawDiagnostics")
+                .run(Task.Expect.FAIL)
+                .writeAll()
+                .getOutputLines(Task.OutputKind.DIRECT);
+        List<String> expected = Arrays.asList(
+                "Test8239596.java:14:31: compiler.err.annotation.type.not.applicable.to.type: Test8239596.Param",
+                "1 error");
+        tb.checkEqual(expected, output);
+    }
+}