Assertion 'type == ECMA_OBJECT_TYPE_GENERAL || type == ECMA_OBJECT_TYPE_PROXY' failed at jerryscript/jerry-core/ecma/operations/ecma-objects.c(ecma_object_get_class_name):3020.

[SwtWld]

JerryScript revision

Commit: a6ab5e9

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

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

poc.js

function JSEtest() {
    var a;
    for (a[a = class b { }] = [[]]; ;)
        break;
}
JSEtest();

​

Execution steps & Output

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

ICE: Assertion 'type == ECMA_OBJECT_TYPE_GENERAL || type == ECMA_OBJECT_TYPE_PROXY' failed at jerryscript/jerry-core/ecma/operations/ecma-objects.c(ecma_object_get_class_name):3020.
Error: ERR_FAILED_INTERNAL_ASSERTION
[1]    33392 abort      jerry poc.js

Credits: Found by OWL337 team.