[antlr-interest] v3 antlr hangs at waitpid

[Martin d'Anjou]

Hello,

My grammar hangs... or I should say when I use my compiled grammar it 
hangs. I don't know where or how. The -debug switch does not print 
information. This is using 3.0b6.

I ran it with strace to see if I learned something, and it hangs at
waitpid(-1,  <unfinished ...>

The CPU is at 0% utilization, so control-C is the only way out.

How can I debug this problem? Prune things out of my grammar until it no 
longer hangs?

Thanks,
Martin