Fix iterator position calculation for array patterns (#3494)

This patch fixes #3455.

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

tests/jerry/es2015/regression-test-issue-3437.js

@@ -13,3 +13,5 @@
 // limitations under the License.
 
 [...RegExp.prototype.compile] = ([]);
+
+assert(RegExp.prototype.compile.length === 0);

tests/jerry/es2015/regression-test-issue-3455.js

@@ -0,0 +1,42 @@
+// 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 {
+  [...RegExp.$.$] = String();
+  assert(false);
+} catch (e) {
+  assert(e instanceof TypeError);
+}
+
+var o = { a : { b : { c : { d: { e : { } } } } } };
+
+[...o.a.b.c.d.e] = "foo";
+
+assert(o.a.b.c.d.e.length === 3);
+assert(o.a.b.c.d.e[0] === "f");
+assert(o.a.b.c.d.e[1] === "o");
+assert(o.a.b.c.d.e[2] === "o");
+
+[o.a.b.c.d.e] = "foo";
+
+assert(o.a.b.c.d.e === "f");
+
+[this.o.a.b.c.d.e] = "bar";
+assert(this.o.a.b.c.d.e === "b");
+
+[...this.o.a.b.c.d.e] = "bar";
+assert(this.o.a.b.c.d.e.length === 3);
+assert(this.o.a.b.c.d.e[0] === "b");
+assert(this.o.a.b.c.d.e[1] === "a");
+assert(this.o.a.b.c.d.e[2] === "r");

tests/unit-core/test-snapshot.c

@@ -223,7 +223,7 @@ main (void)
     /* Check the snapshot data. Unused bytes should be filled with zeroes */
     const uint8_t expected_data[] =
     {
-      0x4A, 0x52, 0x52, 0x59, 0x24, 0x00, 0x00, 0x00,
+      0x4A, 0x52, 0x52, 0x59, 0x25, 0x00, 0x00, 0x00,
       0x00, 0x00, 0x00, 0x00, 0x48, 0x00, 0x00, 0x00,
       0x01, 0x00, 0x00, 0x00, 0x18, 0x00, 0x00, 0x00,
       0x03, 0x00, 0x01, 0x00, 0x41, 0x00, 0x01, 0x00,