What I would be even more grateful for is a review of the error prone parts like those that caused the bootstrap failure. I.e., any lingering assumptions about integer sizes between the hostI must say I'm surprised you do all your computations in HOST_WIDE_INT, rather than say in wide_int, then you could just compare against TYPE_{MIN,MAX}_VALUE (TYPE_DOMAIN (integer_type_node)) instead of inventing a function for that. As for the warn_* vs. flag_* stuff, it just looked that the warn_* is tested in lots of functions invoked even for the return length folding, so it is much harder to prove whether it works properly or not.
Well, chalk that up to my ignorance of a better/more appropriate API. I'll be happy to switch to using it if it simplifies things. Thanks for the tip! Martin
