./chicken-boot irregex.scm -optimize-level 2 -include-path . -include-path ./ -inline -ignore-repository -feature chicken-bootstrap -feature debugbuild -verbose -specialize -types ./types.db   -explicit-use -no-trace -output-file irregex.c

Note: in local procedure `lp',
  in local procedure `collect/terms',
  in local procedure `lp',
  in toplevel procedure `string->sre':
  irregex-core.scm:806: in procedure call to `pair?', the predicate is called with an argument of type
  `pair' and will always return true

Note: in local procedure `lp',
  in local procedure `collect/terms',
  in local procedure `lp',
  in toplevel procedure `string->sre':
  irregex-core.scm:811: in procedure call to `pair?', the predicate is called with an argument of type
  `(pair (pair * pair) *)' and will always return true