Fix local variable declaration issues after function argument initialization. (#3304)

Fixes #3298
Fixes #3299
Fixes #3300
Fixes #3302

JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com

tests/jerry/es2015/function-param-init2.js

@@ -63,3 +63,19 @@ function j(a = arguments[1])
   assert(a === 2);
 }
 j(undefined,2);
+
+function k(a = 2)
+{
+  let d = 5;
+  assert(d === 5);
+  eval("assert(a === 2)");
+}
+k();
+
+function i(a = 3)
+{
+  const d = 6;
+  assert(d === 6);
+  eval("assert(a === 3)");
+}
+i();

tests/jerry/es2015/regression-test-issue-3298.js

@@ -0,0 +1,22 @@
+// Copyright JS Foundation and other contributors, http://js.foundation
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+var $ = { $: function ( $) { } };
+
+function g ( b = (local = $) ) {
+  var o ;
+  function f ( ) { return this === o }
+}
+
+g ()

tests/jerry/es2015/regresssion-test-issue-3302.js

@@ -0,0 +1,26 @@
+// Copyright JS Foundation and other contributors, http://js.foundation
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+function g ( a, b = a ) {
+  function a ( ) { }
+  function $ ( ) { }
+  eval ( "" )
+}
+g ( );
+
+$ = function ( ) {
+  function x ( ) { }
+}
+
+function j ( ) { }