Based on GJS: https://wiki.gnome.org/action/show/Projects/Gjs
Please do the following when reporting CJS crashes:
If possible, provide a stack trace.
Run dmesg and provide the line related to the crash, for instance:
[ 4947.459104] cinnamon: segfault at 7f2611ffffe8 ip **00007f2667dda305** sp 00007fffb416b9d0 error 4 in libcjs.so.0.0.0[**7f2667db1000**+c1000]
Launch the Calculator, choose Advanced Mode and set it to Hexadecimal. Then substract the loading address (first address in brackets: 7f2667db1000) from the ip (00007f2667dda305).
In the example above:
ip: 00007f2667dda305 loading address: 7f2667db1000
00007f2667dda305 - 7f2667db1000 = 29305
This gives us the offset. Use addr2line to see what's under it in our shared library:
addr2line -e /usr/lib/libcjs.so.0.0.0 29305 -fCi gjs_typecheck_boxed
When reporting the bug, along with the trace and the dmesg line, please report that function name (in this example gjs_typecheck_boxed).