Fix this property reference on assignment patterns (#3365)

This patch fixes #3348.

JerryScript-DCO-1.0-Signed-off-by: Robert Fancsik frobert@inf.u-szeged.hu

jerry-core/parser/js/js-parser-expr.c

@@ -2427,6 +2427,14 @@ parser_pattern_process_assignment (parser_context_t *context_p, /**< context */
         parser_raise_error (context_p, PARSER_ERR_INVALID_DESTRUCTURING_PATTERN);
       }
 
+      if (context_p->last_cbc_opcode == CBC_PUSH_PROP_THIS_LITERAL)
+      {
+        context_p->last_cbc_opcode = PARSER_CBC_UNAVAILABLE;
+        uint16_t lit_index = context_p->last_cbc.literal_index;
+        parser_emit_cbc (context_p, CBC_PUSH_THIS);
+        parser_emit_cbc_literal (context_p, CBC_PUSH_PROP_LITERAL, lit_index);
+      }
+
       if (end_type == LEXER_RIGHT_SQUARE)
       {
         PARSER_PLUS_EQUAL_U16 (rhs_opcode, 1);

tests/jerry/es2015/regression-test-issue-3348.js

@@ -0,0 +1,19 @@
+// 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.
+
+try {
+  [$, this.$] = [ ];
+} catch (e) {
+  assert (e instanceof TypeError);
+}