https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109886
--- Comment #10 from Andrew Macleod <amacleod at redhat dot com> --- (In reply to Martin Jambor from comment #9) > A buildbot run which checked out this revision unfortunately still reports > this problem with UBSAN-bootstrapped compiler. Oh, I see.. there's a second problem, and that is that range_cast doesn't check if the type is supported before it blindly sets it to varying :-P One more patcxh coming today to deal with that.. I was going to move cast to the header file anyway, I will tweak the definition at the same time.