Assertion `mjs_stack_size(&mjs->scopes) >= scopes_len' failed at src/mjs_exec.c:949: mjs_execute.

[hope-fly]

mJS revision

Commit: b1b6eac

Build platform

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

Build steps

vim Makefile
DOCKER_GCC=gcc
DOCKER_CLANG=clang
$(DOCKER_GCC) $(CFLAGS) $(TOP_MJS_SOURCES) $(TOP_COMMON_SOURCES) -o $(PROG)
# save the makefile then make
make

Test case

poc.js

(JSON.stringify([1, 2, 3]))(((JSON.stringify - (6) * 10000) - 20 * 9060)([([JSON.parse(JSON.stringify([(0)]))])]));

Execution steps & Output

$ ./mjs/build/mjs poc.js
mjs: src/mjs_exec.c:949: mjs_execute: Assertion `mjs_stack_size(&mjs->scopes) >= scopes_len' failed.
[1]    118000 abort      mjs poc.js

Credits: Found by OWL337 team.