
###### JerryScript revision
df6d430

###### Build platform
Ubuntu 18.04.5 LTS(Linux 4.15.0-119-generic x86_64)

###### Build steps
```
./tools/build.py --clean --debug --compile-flag=-fsanitize=address \
--compile-flag=-m32 --compile-flag=-fno-omit-frame-pointer \
--compile-flag=-fno-common --compile-flag=-g --strip=off \
--system-allocator=on --logging=on --linker-flag=-fuse-ld=gold \
--error-messages=on --profile=es2015-subset  
```
###### Test case
```
var c = new Proxy(Function(), new Proxy(new Proxy(Function(), new Proxy(Function(), { get:function(){ return Proxy; }})), { get:function(){ return Proxy; }}))
var d = new Date();
c.__proto__ = d;

```
###### Output
```
ICE: Assertion 'ECMA_STRING_IS_REF_EQUALS_TO_ONE (string_p)' failed at /root/jerryscript/jerry-core/ecma/base/ecma-literal-storage.c(ecma_free_string_list):77.
Error: ERR_FAILED_INTERNAL_ASSERTION
Aborted

```
Credits: Found by chong from OWL337.
Assertion 'ECMA_STRING_IS_REF_EQUALS_TO_ONE (string_p)' failed in ecma_free_string_list
This is a GitHub Issue
repo:jerryscript
owner:jerryscript-project
Title : Assertion 'ECMA_STRING_IS_REF_EQUALS_TO_ONE (string_p)' failed in ecma_free_string_list
Issue date:

--- start body ---

###### JerryScript revision
df6d430

###### Build platform
Ubuntu 18.04.5 LTS(Linux 4.15.0-119-generic x86_64)

###### Build steps
```
./tools/build.py --clean --debug --compile-flag=-fsanitize=address \
--compile-flag=-m32 --compile-flag=-fno-omit-frame-pointer \
--compile-flag=-fno-common --compile-flag=-g --strip=off \
--system-allocator=on --logging=on --linker-flag=-fuse-ld=gold \
--error-messages=on --profile=es2015-subset  
```
###### Test case
```
var c = new Proxy(Function(), new Proxy(new Proxy(Function(), new Proxy(Function(), { get:function(){ return Proxy; }})), { get:function(){ return Proxy; }}))
var d = new Date();
c.__proto__ = d;

```
###### Output
```
ICE: Assertion 'ECMA_STRING_IS_REF_EQUALS_TO_ONE (string_p)' failed at /root/jerryscript/jerry-core/ecma/base/ecma-literal-storage.c(ecma_free_string_list):77.
Error: ERR_FAILED_INTERNAL_ASSERTION
Aborted

```
Credits: Found by chong from OWL337.
--- end body ---
