Running Espruino on Win10 WSL?

So you compiled this to run natively on WSL? Basically just running make?

It definitely should work - pretty sure I've done it before. Any chance you could run:

gdb espruino
s (for start)
c (for continue)
(it should now break at the assertion)
bt (backtrace - and paste up what it says)
q (quit)

That should tell us exactly which bit of code tried to access a file with a name that was too long.