SIGSEV
An unclosed OBTW result in a segmation fault.
Hi could you provide an example code (and perhaps environment)?
To me it worked every time I had an unclosed statement, although I no longer have lolcode installed
@jD91mZM2 sorry for the late reply.
Nice catch ! I was also able to verify this bug and it's likely that the issue is from tokenization process of incrementing start index until TLDR token is found:

Since TLDR is not in the string, it's just going to increment the index until it's greater than the total string length:

I'll create a PR but I think adding a constraint to the while statement would fix this issue.