Thanks Stefan.
So:
nim c -r modifyframe
fails after 6 frames as explained before.
arc fails for me:
$ nim c --gc:arc modifyframe
Hint: used config file
'/home/jose/.choosenim/toolchains/nim-1.0.6/config/nim.cfg' [Conf]
command line(1, 2) Error: 'none', 'boehm' or 'refc' expected, but 'arc'
found
With valgrind (first time using it) takes me a bit further (14 frames). I
pasted the outcome [here](https://pastebin.com/YbbnmzBv).
If I activate more flags I get this <https://pastebin.com/Y4AKfrku>.
I don't know what to do with that information :O/.
