There is an Assertion 'flags & PARSER_PATTERN_HAS_REST_ELEMENT' failed at /jerry-core/parser/js/js-parser-expr.c in JerryScript 3.0.0.
###### JerryScript revision

Commit: [a6ab5e9](https://github.com/jerryscript-project/jerryscript/commit/a6ab5e9abed70cdedf9f4e9c1dc379eb762ebf64)

Version: v3.0.0



###### Build platform

Ubuntu 18.04.5 LTS (Linux 4.19.128-microsoft-standard x86_64)

Ubuntu 18.04.5 LTS (Linux 5.4.0-44-generic x86_64)



###### Build steps

```bash
python ./tools/build.py --clean --debug --compile-flag=-fsanitize=address --compile-flag=-m32 --compile-flag=-g --strip=off --lto=off --logging=on --line-info=on --error-message=on --system-allocator=on --stack-limit=20
```



###### Test case
<details>
<summary>poc.js</summary>
<pre><code>

```javascript
var iterCount = 0;

async function JSEtest() {
  for await (var { a, b, ...rest }"of [{x: 1, y: 2, a: 5, b: 3}]) {
    assert.sameValue(rest.a, undefined);
  assert.sameValue(rest.b, undefined);

  verifyProperty(rest, "x", {
    enumerable: true,
    writable: true,
    configurable: true,
    value: 1
  });

  verifyProperty(rest, "y", {
    enumerable: true,
    writable: true,
    configurable: true,
    value: 2
  });

  iterCount += 1;
}

JSEtest()
  .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
  .then($DONE, $DONE);
```
</code></pre>
</details>
​	

###### Execution steps & Output

```bash
$ ./jerryscript/build/bin/jerry poc.js

ICE: Assertion 'flags & PARSER_PATTERN_HAS_REST_ELEMENT' failed at jerryscript/jerry-core/parser/js/js-parser-expr.c(parser_parse_object_initializer):4119.
Error: ERR_FAILED_INTERNAL_ASSERTION
[1]    32968 abort      jerry poc.js
```
Credits: Found by OWL337 team.

Assertion 'flags & PARSER_PATTERN_HAS_REST_ELEMENT' failed at jerryscript/jerry-core/parser/js/js-parser-expr.c(parser_parse_object_initializer):4119.
This is a GitHub Issue
repo:jerryscript
owner:jerryscript-project
Title : Assertion 'flags & PARSER_PATTERN_HAS_REST_ELEMENT' failed at jerryscript/jerry-core/parser/js/js-parser-expr.c(parser_parse_object_initializer):4119.
Issue date:

--- start body ---
###### JerryScript revision

Commit: [a6ab5e9](https://github.com/jerryscript-project/jerryscript/commit/a6ab5e9abed70cdedf9f4e9c1dc379eb762ebf64)

Version: v3.0.0



###### Build platform

Ubuntu 18.04.5 LTS (Linux 4.19.128-microsoft-standard x86_64)

Ubuntu 18.04.5 LTS (Linux 5.4.0-44-generic x86_64)



###### Build steps

```bash
python ./tools/build.py --clean --debug --compile-flag=-fsanitize=address --compile-flag=-m32 --compile-flag=-g --strip=off --lto=off --logging=on --line-info=on --error-message=on --system-allocator=on --stack-limit=20
```



###### Test case
<details>
<summary>poc.js</summary>
<pre><code>

```javascript
var iterCount = 0;

async function JSEtest() {
  for await (var { a, b, ...rest }"of [{x: 1, y: 2, a: 5, b: 3}]) {
    assert.sameValue(rest.a, undefined);
  assert.sameValue(rest.b, undefined);

  verifyProperty(rest, "x", {
    enumerable: true,
    writable: true,
    configurable: true,
    value: 1
  });

  verifyProperty(rest, "y", {
    enumerable: true,
    writable: true,
    configurable: true,
    value: 2
  });

  iterCount += 1;
}

JSEtest()
  .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
  .then($DONE, $DONE);
```
</code></pre>
</details>
​	

###### Execution steps & Output

```bash
$ ./jerryscript/build/bin/jerry poc.js

ICE: Assertion 'flags & PARSER_PATTERN_HAS_REST_ELEMENT' failed at jerryscript/jerry-core/parser/js/js-parser-expr.c(parser_parse_object_initializer):4119.
Error: ERR_FAILED_INTERNAL_ASSERTION
[1]    32968 abort      jerry poc.js
```
Credits: Found by OWL337 team.

--- end body ---
