There is an Assertion 'ecma_is_lexical_environment (object_p)' failed at /base/ecma-helpers.c(ecma_get_lex_env_type) in JerryScript 3.0.0.
###### JerryScript revision


Commit: [42523bd6](https://github.com/jerryscript-project/jerryscript/commit/42523bd6e2b114755498c9f68fd78545f9b33476)

Version: v3.0.0



###### Build platform

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



###### Build steps

```bash
python ./tools/build.py --clean --debug --compile-flag=-m32 --compile-flag=-g --strip=off --lto=off --logging=on --line-info=on --error-message=on --system-allocator=on --linker-flag=-fuse-ld=gold --profile=es2015-subset --stack-limit=20
```

ASAN closed

###### Test case

```javascript
var i = 0;
var a = [];
var JSEtest = [];

JSEtest.__defineGetter__(0, function NaN() {
  if (i++ > 2) {
    return;
  }

  JSEtest.shift();
  gc();
  a.push(0);
  a.concat(JSEtest);
});

JSEtest[0];
```
​	

###### Execution steps & Output

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

ICE: Assertion 'ecma_is_lexical_environment (object_p)' failed at /home/f1yh0p/jerryscript/jerry-core/ecma/base/ecma-helpers.c(ecma_get_lex_env_type):291.
Error: ERR_FAILED_INTERNAL_ASSERTION
```

Credits: Found by OWL337 team.
Assertion 'ecma_is_lexical_environment (object_p)' failed at ecma-helpers.c (ecma_get_lex_env_type).
This is a GitHub Issue
repo:jerryscript
owner:jerryscript-project
Title : Assertion 'ecma_is_lexical_environment (object_p)' failed at ecma-helpers.c (ecma_get_lex_env_type).
Issue date:

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


Commit: [42523bd6](https://github.com/jerryscript-project/jerryscript/commit/42523bd6e2b114755498c9f68fd78545f9b33476)

Version: v3.0.0



###### Build platform

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



###### Build steps

```bash
python ./tools/build.py --clean --debug --compile-flag=-m32 --compile-flag=-g --strip=off --lto=off --logging=on --line-info=on --error-message=on --system-allocator=on --linker-flag=-fuse-ld=gold --profile=es2015-subset --stack-limit=20
```

ASAN closed

###### Test case

```javascript
var i = 0;
var a = [];
var JSEtest = [];

JSEtest.__defineGetter__(0, function NaN() {
  if (i++ > 2) {
    return;
  }

  JSEtest.shift();
  gc();
  a.push(0);
  a.concat(JSEtest);
});

JSEtest[0];
```
​	

###### Execution steps & Output

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

ICE: Assertion 'ecma_is_lexical_environment (object_p)' failed at /home/f1yh0p/jerryscript/jerry-core/ecma/base/ecma-helpers.c(ecma_get_lex_env_type):291.
Error: ERR_FAILED_INTERNAL_ASSERTION
```

Credits: Found by OWL337 team.
--- end body ---
