With extended information enabled, the game can crash upon far look

[gebulmer]

With EXTENDED_INFO enabled, there appears to be some form of stack buffer overflow after examining a monster during a lengthy session

This warning from the changelog is relevant:

Disabled the extended farlook information as using it repeatedly ends up corrupting mons[] over time, causing game instability. Re-enable it by uncommenting EXTENDED_INFO in config.h.

I figured it's worth opening an issue about it because hardfought appears to have it enabled

Do you have any suspicions as to where the problem lies?