Jerryscript 3.0.0 was discovered to contain a stack overflow via ecma_lcache_lookup in /jerry-core/ecma/base/ecma-lcache.c.
###### JerryScript revision

Commit: [51da1551](https://github.com/jerryscript-project/jerryscript/commit/51da15516e1436184be9914314f76d596f14cd27)

Version: v3.0.0



###### Build platform

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



###### Build steps

```bash
./tools/build.py --clean --debug --compile-flag=-fsanitize=address --compile-flag=-m32 --lto=off --logging=on --line-info=on --error-message=on --system-allocator=on --profile=es2015-subset --stack-limit=20
```



###### Test case

```javascript
let array = new Array(1);
array.splice(1, 0, array);
array.flat(Infinity);
```

​	

###### Execution steps & Output

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

ASAN:DEADLYSIGNAL
=================================================================
==26613==ERROR: AddressSanitizer: stack-overflow on address 0xff535ffc (pc 0x5661347c bp 0xff536090 sp 0xff536000 T0)
    #0 0x5661347b in ecma_lcache_lookup /root/jerryscript/jerry-core/ecma/base/ecma-lcache.c:144
    #1 0x569cde1f  (/root/jerryscript/build/bin/jerry+0x477e1f)

SUMMARY: AddressSanitizer: stack-overflow /root/jerryscript/jerry-core/ecma/base/ecma-lcache.c:144 in ecma_lcache_lookup
==26613==ABORTING

```

Credits: Found by OWL337 team.
Stack-overflow in ecma_lcache_lookup (ecma-lcache.c)
This is a GitHub Issue
repo:jerryscript
owner:jerryscript-project
Title : Stack-overflow in ecma_lcache_lookup (ecma-lcache.c)
Issue date:

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

Commit: [51da1551](https://github.com/jerryscript-project/jerryscript/commit/51da15516e1436184be9914314f76d596f14cd27)

Version: v3.0.0



###### Build platform

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



###### Build steps

```bash
./tools/build.py --clean --debug --compile-flag=-fsanitize=address --compile-flag=-m32 --lto=off --logging=on --line-info=on --error-message=on --system-allocator=on --profile=es2015-subset --stack-limit=20
```



###### Test case

```javascript
let array = new Array(1);
array.splice(1, 0, array);
array.flat(Infinity);
```

​	

###### Execution steps & Output

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

ASAN:DEADLYSIGNAL
=================================================================
==26613==ERROR: AddressSanitizer: stack-overflow on address 0xff535ffc (pc 0x5661347c bp 0xff536090 sp 0xff536000 T0)
    #0 0x5661347b in ecma_lcache_lookup /root/jerryscript/jerry-core/ecma/base/ecma-lcache.c:144
    #1 0x569cde1f  (/root/jerryscript/build/bin/jerry+0x477e1f)

SUMMARY: AddressSanitizer: stack-overflow /root/jerryscript/jerry-core/ecma/base/ecma-lcache.c:144 in ecma_lcache_lookup
==26613==ABORTING

```

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