[Iverilog-devel] Crash on invalid indexing of generate block

[<ni...@ly...>]

For the attached (broken) code, I get the following error, and a
segmentation fault. I'm using iverilog compiled from the repo.

  $ iverilog ctz-reduced.vl
  ctz-reduced.vl:28: error: Scope index expression is not constant: ((n)-(k))-('sd1)
  ctz-reduced.vl:28: XXXXX: Errors evaluating scope index
  ctz-reduced.vl:28: error: Scope index expression is not constant: ((n)-(k))-('sd1)
  ctz-reduced.vl:28: XXXXX: Errors evaluating scope index
  ctz-reduced.vl:28: error: Unable to bind wire/reg/memory `REDUCE[((n)-(k))-('sd1)].r[('sd2)*(cnt[(n)-('sd1):((n)-(k))+('sd1)])]' in `ctz'
  Segmentation fault

(I have a working version too, using a second generate block. I wasn't
sure if that was necessary, but it seems one can't use regular variables
(i.e., not params or genvar) when indexing generate blocks).

Regards,
/Niels