Fixed in:

Voron's libcod: https://github.com/voron00/libcod/co...0a0ec3a4958125
Mitch's libcod: https://github.com/M-itch/libcod/blo...ibcod.cpp#L570

Original thread which discusses this segfault: https://killtube.org/showthread.php?...function/page3