https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81194
--- Comment #9 from Richard Biener <rguenth at gcc dot gnu.org> --- (In reply to Peter Bergner from comment #8) > So we have a switch statement with onc case and a default case statement. > The normal case statement contains an __builtin_unreachable() call, so we > delete the case statement, leaving us with only the default case. We then > call into expand_case() and we have this code which has been there for a > while: > > /* Get upper and lower bounds of case values. */ > elt = gimple_switch_label (stmt, 1); > > Since there is only one default case statement in stmt, asking for the label > at offset "1" is illegal and that leads to the ICE. Either we need to > protect this code or maybe we can remove the switch statement all together. I think we should be defensive here but also take the opportunity to remove the switch stmt.
